# sadiqbd.com — Full Tool & Blog Index

> Complete machine-readable index of all tools and blog posts on sadiqbd.com. 100+ free browser-based tools — no login, no data stored, privacy-first.

## Calculators

- [EMI Calculator](https://sadiqbd.com/calculators/emi) - Free online EMI calculator. Calculate monthly loan installments, total interest, and full repayment schedule for personal, car, and home loans instantly.
- [Compound Interest](https://sadiqbd.com/calculators/compound-interest) - Free compound interest calculator. Compute final amount, total interest earned, and year-by-year growth for savings, investments, and deposits instantly.
- [Simple Interest](https://sadiqbd.com/calculators/simple-interest) - Free simple interest calculator. Compute interest earned or paid, the total repayment amount, and a year-by-year breakdown for loans, savings, and deposits.
- [SIP Calculator](https://sadiqbd.com/calculators/sip) - Free SIP calculator. Calculate your Systematic Investment Plan returns, maturity amount, wealth gained, and a year-by-year growth breakdown for mutual funds.
- [FD Calculator](https://sadiqbd.com/calculators/fd) - Free FD calculator. Calculate Fixed Deposit maturity amount, total interest earned, and a quarter-by-quarter breakdown for any bank at any interest rate.
- [RD Calculator](https://sadiqbd.com/calculators/rd) - Free RD calculator. Calculate maturity amount, total interest earned, and a month-by-month breakdown for your bank recurring deposit at any interest rate.
- [RD Goal Calculator](https://sadiqbd.com/calculators/rd-goal) - Free RD Goal Planner. Enter your savings target, interest rate, and tenure to calculate exactly how much you need to deposit monthly to reach your goal.
- [Loan Planner](https://sadiqbd.com/calculators/loan-planner) - Free online Loan Planner. Enter your monthly EMI budget, interest rate, and tenure to instantly calculate the maximum loan amount you can comfortably afford.
- [Retirement Calculator](https://sadiqbd.com/calculators/retirement) - Free Retirement Calculator. Estimate your retirement corpus, how long your savings will last, and how much to save monthly to comfortably reach your goal.
- [Inflation Calculator](https://sadiqbd.com/calculators/inflation) - Free Inflation Calculator. Find the future value of money, the real purchasing power of a past amount, and how inflation has eroded your savings over time.
- [Tax Calculator](https://sadiqbd.com/calculators/tax-calculator) - Free GST and VAT Calculator. Add or remove tax from any amount. Supports India GST slabs, UK VAT, EU VAT, Australian GST, US sales tax, and 50+ global rates.
- [Percentage Calculator](https://sadiqbd.com/calculators/percentage) - Free Percentage Calculator. Find what percent one number is of another, calculate percentage increase or decrease, find a percentage of a number, and more.
- [Date Calculator](https://sadiqbd.com/calculators/date-calculator) - Free Date Calculator. Find exact days, weeks, months, and years between any two dates. Add or subtract days to instantly calculate any future or past date.

## Text Tools

- [Word & Character Counter](https://sadiqbd.com/text/word-counter) - Free online word counter. Count words, characters with and without spaces, sentences, paragraphs, and accurately estimate reading time instantly online.
- [Case Converter](https://sadiqbd.com/text/case-converter) - Free online case converter. Transform text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case online.
- [Lorem Ipsum Generator](https://sadiqbd.com/text/lorem-ipsum) - Free Lorem Ipsum generator. Generate placeholder text by paragraphs, sentences, or words. Includes options for custom paragraph length and word count.
- [Remove Duplicate Lines](https://sadiqbd.com/text/remove-duplicates) - Free duplicate line remover. Instantly remove duplicate lines from any text. Supports case-insensitive matching, line trimming, and blank line removal.
- [Sort Lines](https://sadiqbd.com/text/sort-lines) - Free online line sorter. Sort text lines alphabetically (A-Z or Z-A), by length, numerically, or randomly. Supports case-insensitive and reverse sorting.
- [Text Diff](https://sadiqbd.com/text/text-diff) - Free text diff tool. Compare two text blocks and instantly highlight additions, deletions, and unchanged lines. Ideal for code, documents, and configs.
- [Find & Replace](https://sadiqbd.com/text/find-replace) - Free online find and replace tool. Replace text using plain strings or regex. Supports case-insensitive matching, whole-word mode, and multi-line text.
- [Text to Slug](https://sadiqbd.com/text/text-to-slug) - Free URL slug generator. Convert any text or page title into a clean URL-friendly slug. Handles unicode, diacritics, spaces, and special characters online.
- [String Repeater](https://sadiqbd.com/text/string-repeater) - Free online string repeater. Repeat any text a specified number of times with a custom separator. Useful for test data, patterns, and repeated content.
- [Morse Code Translator](https://sadiqbd.com/text/morse-code) - Free Morse code translator. Instantly convert text to Morse code and back. Supports all English letters, digits, and common punctuation marks and symbols.
- [ROT13 Encoder](https://sadiqbd.com/text/rot13) - Free ROT13 encoder and decoder. Apply the ROT13 or ROT47 Caesar cipher to any text. ROT13 is its own inverse — just encode and decode with the same click.
- [Character Frequency](https://sadiqbd.com/text/char-frequency) - Free character frequency counter. Analyze any text to see how often each character appears. Useful for cryptanalysis, linguistic research, and text analysis.
- [Text Reverser](https://sadiqbd.com/text/text-reverser) - Free online text reverser. Instantly reverse characters in text, reverse the order of words, or reverse the order of lines. Fast and free online tool.
- [Text Truncator](https://sadiqbd.com/text/text-truncator) - Free text truncator. Shorten text to any word or character limit with optional ellipsis. Ideal for meta descriptions, social media previews, and snippets.
- [Whitespace Cleaner](https://sadiqbd.com/text/whitespace-tools) - Free whitespace cleaner tool. Trim leading and trailing spaces, collapse multiple spaces, remove blank lines, and normalize text formatting instantly.

## Converters

- [Length Converter](https://sadiqbd.com/converters/length) - Free length unit converter. Instantly convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles, and more.
- [Weight Converter](https://sadiqbd.com/converters/weight) - Free weight and mass converter. Instantly convert between milligrams, grams, kilograms, metric tons, ounces, pounds, stones, and more weight units online.
- [Temperature Converter](https://sadiqbd.com/converters/temperature) - Free temperature converter. Convert between Celsius, Fahrenheit, Kelvin, and Rankine with conversion formulas and instant results. Fast and easy online tool.
- [Area Converter](https://sadiqbd.com/converters/area) - Free area unit converter. Convert between square millimeters, centimeters, meters, kilometers, inches, feet, yards, acres, hectares, and square miles.
- [Volume Converter](https://sadiqbd.com/converters/volume) - Free volume unit converter. Convert between milliliters, liters, cubic meters, teaspoons, tablespoons, fluid ounces, cups, pints, quarts, and gallons.
- [Speed Converter](https://sadiqbd.com/converters/speed) - Free speed unit converter. Instantly convert between meters per second, kilometers per hour, miles per hour, knots, feet per second, and Mach number online.
- [Pressure Converter](https://sadiqbd.com/converters/pressure) - Free online pressure unit converter. Convert between pascals, kilopascals, megapascals, bar, standard atmospheres, PSI, mmHg, inHg, and Torr instantly.
- [Energy Converter](https://sadiqbd.com/converters/energy) - Free energy unit converter. Instantly convert between joules, kilojoules, calories, kilocalories, watt-hours, kilowatt-hours, BTU, and electronvolts online.
- [Power Converter](https://sadiqbd.com/converters/power) - Free power unit converter. Instantly convert between watts, kilowatts, megawatts, mechanical and electrical horsepower, BTU per hour, and more power units.
- [Angle Converter](https://sadiqbd.com/converters/angle) - Free angle unit converter. Instantly convert between degrees, radians, gradians, arc minutes, arc seconds, turns, and milliradians with instant results.
- [Frequency Converter](https://sadiqbd.com/converters/frequency) - Free frequency unit converter. Instantly convert between hertz, kilohertz, megahertz, gigahertz, terahertz, and RPM. Fast and accurate online conversion tool.
- [Fuel Economy Converter](https://sadiqbd.com/converters/fuel-economy) - Free fuel economy converter. Instantly convert between miles per gallon (US and UK), liters per 100 km, and kilometers per liter with instant results.
- [Data Storage Converter](https://sadiqbd.com/converters/data-storage) - Free digital storage converter. Convert between bits, bytes, kilobytes, megabytes, gigabytes, terabytes, and petabytes using both SI and binary standards.
- [Cooking Converter](https://sadiqbd.com/converters/cooking) - Free cooking measurement converter. Convert between teaspoons, tablespoons, cups, fluid ounces, milliliters, liters, pints, and quarts for any recipe.
- [Time Zone Converter](https://sadiqbd.com/converters/timezone) - Free online Time Zone Converter. Convert times between any two IANA time zones worldwide. World clock with DST support and all 400+ time zones included.
- [Time Converter](https://sadiqbd.com/converters/time) - Free time unit converter. Instantly convert between nanoseconds, microseconds, milliseconds, seconds, minutes, hours, days, weeks, months, and years online.
- [Currency Exchange](https://sadiqbd.com/converters/currency-exchange) - Free online Currency Converter. Convert between 160+ world currencies with live exchange rates. Supports USD, EUR, GBP, INR, JPY, CAD, AUD, BDT, and more.

## Health

- [Age Calculator](https://sadiqbd.com/health/age) - Free Age Calculator. Find your exact age in years, months, days, and weeks from any date of birth. Includes a next birthday countdown and zodiac sign.
- [BMI Calculator](https://sadiqbd.com/health/bmi) - Free online BMI Calculator. Calculate your Body Mass Index based on height and weight. Get your health classification, BMI category, and recommendations.
- [BMR Calculator](https://sadiqbd.com/health/bmr) - Free online BMR Calculator. Calculate your Basal Metabolic Rate and total daily calorie requirements based on your weight, height, age, and activity level.
- [Ideal Body Weight](https://sadiqbd.com/health/ideal-weight) - Free ideal body weight calculator. Use the Hamwi, Devine, Robinson, and Miller formulas to find your exact healthy weight range based on height and gender.
- [Calories Burned](https://sadiqbd.com/health/calories-burned) - Free online Calories Burned Calculator. Calculate calories burned during exercise and daily activities based on your body weight and specific activity type.
- [Steps to Calories](https://sadiqbd.com/health/steps-to-calories) - Free steps to calories converter. Calculate calories burned from steps walked or run based on your step count, body weight, and stride type instantly.
- [Calorie Intake](https://sadiqbd.com/health/calorie-intake) - Calculate your daily calorie needs based on age, height, weight, and activity level. Get personalised targets for weight loss, maintenance, and muscle gain.
- [Water Intake Calculator](https://sadiqbd.com/health/water-intake) - Free online Daily Water Intake Calculator. Find out exactly how much water you should drink per day based on your body weight, age, and activity level.
- [Sleep Calculator](https://sadiqbd.com/health/sleep-calculator) - Free sleep calculator. Find the best times to wake up or go to sleep based on 90-minute sleep cycles. Wake up feeling refreshed by completing full cycles.
- [Macro Calculator](https://sadiqbd.com/health/macro-calculator) - Free macro calculator. Calculate daily protein, carbohydrate, and fat targets based on your total calorie intake, body weight, and specific fitness goal.
- [Body Fat Calculator](https://sadiqbd.com/health/body-fat) - Free body fat percentage calculator. Calculate using the US Navy method and BMI method. Find your total fat mass, lean mass, and overall fitness category.
- [Height Converter](https://sadiqbd.com/health/height-converter) - Free height converter. Convert between centimetres and feet/inches instantly. Includes a full height reference chart from 4ft to 7ft and height comparisons.
- [Period Calculator](https://sadiqbd.com/health/period-calculator) - Free online Period Calculator. Predict your upcoming periods, ovulation date, and fertile window based on your last period date and average cycle length.
- [Due Date Calculator](https://sadiqbd.com/health/due-date) - Free online Pregnancy Due Date Calculator. Calculate your expected delivery date based on your last menstrual period (LMP) or conception date instantly.

## Internet

- [DNS Lookup](https://sadiqbd.com/internet/dns-lookup) - Free online DNS Lookup tool. Instantly query A, AAAA, MX, NS, TXT, CNAME, SOA, and PTR DNS records for any domain name. Results are fast and accurate.
- [WHOIS Lookup](https://sadiqbd.com/internet/whois) - Free online WHOIS Lookup tool. Find domain registration details including owner, registrar, creation date, expiry date, and nameservers for any domain.
- [Ping Tool](https://sadiqbd.com/internet/ping) - Free online Ping tool. Send ICMP echo requests to any hostname or IP address and see round-trip time (RTT) results in real time, displayed line by line.
- [Traceroute](https://sadiqbd.com/internet/traceroute) - Free online Traceroute tool. Trace the complete network path from our server to any hostname or IP address and view each hop response time in real time.
- [Port Scanner](https://sadiqbd.com/internet/port-scanner) - Free online Port Scanner. Check which TCP ports are open on any host or IP address. Scan common, web, database, and mail server ports instantly online.
- [SSL Checker](https://sadiqbd.com/internet/ssl-checker) - Free SSL Certificate Checker. Check any domain SSL/TLS certificate — expiry date, issuer, subject alternative names, key type, and full validity status.
- [HTTP Headers](https://sadiqbd.com/internet/http-headers) - Free HTTP Header Checker. Inspect HTTP response headers for any URL — status code, security headers, caching, content type, redirects, and cookies online.
- [SPF Lookup](https://sadiqbd.com/internet/spf-lookup) - Free SPF lookup and generator. Check existing SPF records for any domain and interactively build a valid v=spf1 TXT record for your email authentication.
- [DKIM Checker](https://sadiqbd.com/internet/dkim-checker) - Free DKIM checker and validator. Verify DKIM DNS records for any domain and selector. Supports custom selectors and automatic discovery of common selectors.
- [DMARC Lookup](https://sadiqbd.com/internet/dmarc-lookup) - Free DMARC lookup and generator. Check existing DMARC records for any domain and build a valid v=DMARC1 TXT record with full policy and reporting settings.
- [MX Lookup](https://sadiqbd.com/internet/mx-lookup) - Free online MX Lookup tool. Instantly query Mail Exchange (MX) DNS records for any domain. View all mail server hostnames, priority values, and IP addresses.
- [NS Lookup](https://sadiqbd.com/internet/ns-lookup) - Free online NS Lookup tool. Instantly query Nameserver (NS) DNS records for any domain. View all authoritative name servers and their resolved IP addresses.
- [Reverse DNS](https://sadiqbd.com/internet/reverse-dns) - Free online Reverse DNS (rDNS) lookup tool. Find the hostname for any IPv4 or IPv6 address using PTR record DNS resolution. Fast and accurate results.
- [Blacklist Checker](https://sadiqbd.com/internet/blacklist-checker) - Free email blacklist checker. Instantly test if your IP or domain is listed on 15+ major spam blacklists including Spamhaus, SpamCop, Barracuda, and SORBS.
- [Subnet Calculator — IPv4 & IPv6](https://sadiqbd.com/internet/subnet) - Free IPv4 & IPv6 Subnet Calculator. Enter an IP address with CIDR prefix to calculate network address, broadcast, usable host range, subnet mask, and total host count.
- [BIMI Lookup](https://sadiqbd.com/internet/bimi-lookup) - Free BIMI lookup and generator. Check existing BIMI DNS records for any domain and build a valid v=BIMI1 TXT record with your logo URL and VMC certificate.
- [Website Speed Test](https://sadiqbd.com/internet/website-speed-test) - Free Website Speed Test. Check load time, TTFB, HTTP status code, response size, and performance score of any URL. All tests run from our server instantly.

## Developer

- [JSON Formatter](https://sadiqbd.com/developer/json-formatter) - Free JSON formatter, validator and minifier. Pretty-print with custom indentation, minify for production, detect syntax errors, and format JSON instantly.
- [JSON Unescape & Cleaner](https://sadiqbd.com/developer/json-unescape) - Free JSON unescape tool. Remove backslashes, fix escaped quotes, and instantly pretty-print stringified or double-escaped JSON directly in your browser.
- [JSON Diff](https://sadiqbd.com/developer/json-diff) - Free online JSON diff tool. Compare two JSON documents side by side with colour-coded additions, removals, and changes. Structural comparison is key-order-independent and fully client-side.
- [Base64 Encoder/Decoder](https://sadiqbd.com/developer/base64) - Free online Base64 encoder and decoder. Convert text or binary data to Base64 and back, with full support for standard and URL-safe Base64 formats online.
- [URL Encoder/Decoder](https://sadiqbd.com/developer/url-encoder) - Free URL encoder and decoder. Percent-encode special characters or decode URLs back to plain text. Supports encodeURIComponent and full encodeURI standards.
- [HTML Entities](https://sadiqbd.com/developer/html-entities) - Free HTML entities encoder and decoder. Encode or decode characters like <, >, &, and quotes to HTML entities. Prevent XSS and display raw HTML safely.
- [Password Generator](https://sadiqbd.com/developer/password-generator) - Free strong password generator. Create secure, random passwords with custom length, numbers, and symbols. Includes a visual password strength indicator.
- [UUID Generator](https://sadiqbd.com/developer/uuid-generator) - Free UUID v4 generator. Generate single or bulk UUIDs (GUIDs) instantly using cryptographically secure randomness. Copy them individually or all at once.
- [Timestamp Converter](https://sadiqbd.com/developer/timestamp-converter) - Free Unix timestamp converter. Convert Unix timestamps to human-readable dates and vice versa. View the current timestamp and convert any timezone easily.
- [Number Base Converter](https://sadiqbd.com/developer/base-converter) - Free number base converter. Instantly convert any integer between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16) online.
- [JWT Decoder](https://sadiqbd.com/developer/jwt-decoder) - Free JWT decoder. Decode and inspect JSON Web Token headers and payloads. View claims, expiry times, and token structure without verifying signatures.
- [Regex Tester](https://sadiqbd.com/developer/regex-tester) - Free online regex tester. Test JavaScript regular expressions with live match highlighting, capture group extraction, and full flag support (g, i, m, s).
- [Color Converter](https://sadiqbd.com/developer/color-converter) - Free color converter. Convert between HEX, RGB, RGBA, HSL, and HSLA color formats with a live color preview. Instantly copy any color format with one click.
- [Hash Generator](https://sadiqbd.com/developer/hash-generator) - Free online hash generator. Generate MD5, SHA-1, SHA-256, SHA-512, SHA3-256, and SHA3-512 cryptographic hashes from any text or string instantly online.
- [Bcrypt Generator](https://sadiqbd.com/developer/bcrypt-generator) - Free bcrypt hash generator and verifier. Generate secure bcrypt password hashes with configurable cost factor and verify passwords against existing hashes.
- [Random String Generator](https://sadiqbd.com/developer/random-string) - Free random string generator. Generate cryptographically secure random strings with custom length and character sets — alphanumeric, hex, or full symbols.
- [Cron Explainer](https://sadiqbd.com/developer/cron-explainer) - Free cron explainer and validator. Paste any cron schedule to get a plain-English description and upcoming run times. Supports 5-field and 6-field syntax.
- [REST API Checker](https://sadiqbd.com/developer/rest-api-checker) - Free online REST API tester. Send GET, POST, PUT, DELETE, PATCH requests to any API endpoint with custom headers and JSON, raw or multipart body. View status, response headers, time and formatted response.

## SEO

- [SERP Preview](https://sadiqbd.com/seo/serp-preview) - Free SERP preview tool. See exactly how your title, URL, and meta description will appear in Google desktop and mobile search results before publishing.
- [Meta Tag Generator](https://sadiqbd.com/seo/meta-tag-generator) - Free meta tag generator. Create fully optimized HTML meta tags including title, description, robots, author, Open Graph, and Twitter Card tags instantly.
- [Open Graph Generator](https://sadiqbd.com/seo/open-graph-generator) - Free Open Graph generator. Create Open Graph and Twitter Card meta tags for social sharing. Preview how your page appears on Facebook, Twitter, and LinkedIn.
- [Keyword Density](https://sadiqbd.com/seo/keyword-density) - Free keyword density checker. Analyze keyword frequency, TF percentage, and phrase density. Identify keyword stuffing and optimize your content for SEO.
- [Robots.txt Generator & Tester](https://sadiqbd.com/seo/robots-txt-generator) - Free robots.txt generator and tester. Build a valid robots.txt file with allow/disallow rules, then verify any URL is allowed or blocked for any crawler.
- [XML Sitemap Generator](https://sadiqbd.com/seo/xml-sitemap-generator) - Free XML sitemap generator. Paste a list of URLs to instantly generate a valid XML sitemap with priority, change frequency, and last modified date settings.
- [UTM Builder](https://sadiqbd.com/seo/utm-builder) - Free UTM parameter builder. Create UTM tracking URLs with source, medium, campaign, term, and content parameters for Google Analytics and other platforms.
- [Schema Generator](https://sadiqbd.com/seo/schema-generator) - Free JSON-LD schema generator. Create structured data markup for Article, Product, FAQ, LocalBusiness, and BreadcrumbList to boost rich results in Google.
- [Hreflang Generator](https://sadiqbd.com/seo/hreflang-generator) - Free hreflang tag generator. Create correct hreflang link tags for multilingual and multiregional websites. Supports all ISO language and region codes.
- [Canonical Tag Generator](https://sadiqbd.com/seo/canonical-tag-generator) - Free canonical tag generator. Create canonical link elements to prevent duplicate content issues. Generate the correct HTML canonical rel tags for any URL.
- [Link Extractor](https://sadiqbd.com/seo/link-extractor) - Free link extractor tool. Paste HTML to extract all internal and external links with anchor text, href values, and rel attributes. Perfect for SEO audits.
- [Image Alt Checker](https://sadiqbd.com/seo/image-alt-checker) - Free image alt tag checker. Paste HTML to find all images, identify missing alt attributes, and get a complete accessibility and SEO audit report instantly.
- [Redirect Mapper](https://sadiqbd.com/seo/redirect-mapper) - Free redirect mapping tool. Plan 301 redirects from old URLs to new ones. Add, edit, and export your complete redirect map as .htaccess, Nginx, or CSV.
- [Heading Extractor](https://sadiqbd.com/seo/heading-extractor) - Free heading tag extractor. Paste HTML to extract all H1-H6 heading tags, visualize the hierarchy, and check your page structure for SEO best practices.
- [SEO Checklist](https://sadiqbd.com/seo/seo-checklist) - Free on-page SEO checklist tool. Paste your title, meta description, and content to get an instant SEO score with clear and actionable recommendations.

## Blog

Blog posts are indexed per category to keep each file small.

- [Blog](https://sadiqbd.com/blog) - All published articles, newest first
- [Calculators Blog](https://sadiqbd.com/calculators/llms-full.txt) - All Calculators articles (93 posts)
- [Converters Blog](https://sadiqbd.com/converters/llms-full.txt) - All Converters articles (124 posts)
- [Developer Blog](https://sadiqbd.com/developer/llms-full.txt) - All Developer articles (130 posts)
- [Health Blog](https://sadiqbd.com/health/llms-full.txt) - All Health articles (104 posts)
- [Internet Blog](https://sadiqbd.com/internet/llms-full.txt) - All Internet articles (123 posts)
- [SEO Blog](https://sadiqbd.com/seo/llms-full.txt) - All SEO articles (107 posts)
- [Text Tools Blog](https://sadiqbd.com/text/llms-full.txt) - All Text Tools articles (107 posts)

## Sitemap

https://sadiqbd.com/sitemap.xml

## About

Built and maintained by sadiqbd. All tools run entirely in the browser or on the server with no user data retained. See https://sadiqbd.com/about for more.