Weight Converter β kg, Pounds, Ounces, Tola & More Explained
Learn how weight units from milligrams to maunds relate to each other β including troy ounces, tolas, and stones β with real examples for gold, cooking, shipping, and body weight.
By sadiqbd Β· June 6, 2026
Weight units vary more than you'd expect for something so fundamental
Grams, kilograms, tonnes β metric. Ounces, pounds, stones β imperial. Carats for gemstones. Troy ounces for precious metals. Maunds and seers for traditional South Asian measurement. Weight is one of the most universally needed measurements, but the unit system depends heavily on geography, industry, and the era of the document you're reading.
A weight converter handles all of these, including the traditional South Asian units that still appear in older land records, family gold calculations, and agricultural contexts.
The Main Weight Units
Metric
| Unit | Equivalent |
|---|---|
| Milligram (mg) | 0.001 g |
| Gram (g) | base metric unit |
| Kilogram (kg) | 1,000 g |
| Tonne (metric ton) | 1,000 kg |
Imperial / US
| Unit | Metric equivalent |
|---|---|
| Ounce (oz) | 28.35 g |
| Pound (lb) | 453.6 g = 0.4536 kg |
| Stone (st) | 14 lb = 6.35 kg |
| Short ton (US ton) | 2,000 lb = 907.2 kg |
| Long ton (UK ton) | 2,240 lb = 1,016 kg |
Precious metals and gemstones
| Unit | Equivalent |
|---|---|
| Troy ounce | 31.10 g (heavier than avoirdupois oz) |
| Carat (gem) | 0.2 g (200 mg) |
Traditional South Asian units
| Unit | Equivalent |
|---|---|
| Tola | 11.66 g (traditional; used for gold) |
| Masha | 0.97 g (1/12 tola) |
| Ratti | 0.121 g (1/8 masha) |
| Seer (Bangladesh) | ~933 g (varies) |
| Maund | 40 seers β 37.3 kg |
How to Use the Weight Converter on sadiqbd.com
- Enter the weight value.
- Select the source unit β grams, kg, pounds, ounces, tola, etc.
- Select the target unit.
- Read the result β instant.
Real-World Examples
Buying gold in Bangladesh
Gold jewellery in Bangladesh is traditionally priced per tola (11.66 g). Gold is also internationally priced per troy ounce (31.10 g) and tracked in grams.
If 22-carat gold is priced at ৳85,000 per tola:
- Price per gram: ৳85,000 ÷ 11.66 = ৳7,289/g
- Price per troy ounce: ৳7,289 à 31.10 = ৳2,26,688/troy oz
When comparing against international gold prices (typically quoted in USD per troy ounce), converting both to troy ounces or both to grams gives a fair comparison.
Cooking and baking
A German bread recipe calls for 750g of flour. You're measuring with a scale that shows pounds.
750 g Γ· 453.6 = 1.65 lb = 1 lb 10.5 oz
Alternatively: 750g of water at standard density = 750 ml. For flour, use the weight directly β don't convert to volume, as flour density varies.
Body weight comparison
Someone weighs 78 kg. In pounds and stones:
- 78 Γ 2.205 = 172 lb
- 78 Γ· 6.35 = 12.28 stones = 12 stone 4 lb
The stone unit (14 pounds) is commonly used in the UK and Ireland for body weight, though it's almost unknown elsewhere.
Shipping and customs
A package weighs 3.2 kg. International shipping from the US quotes rates in pounds.
3.2 kg Γ 2.205 = 7.06 lb
Most US shipping calculators round to the nearest pound (8 lb) for rate purposes β the converter tells you exactly where you stand.
Pharmaceutical dosing
A medication dose is 500 mg. In grams: 500 mg Γ· 1,000 = 0.5 g. In ounces: 500 mg Γ· 28,350 = 0.0176 oz β a meaninglessly small number in imperial, which is why pharmaceutical dosing always uses metric.
The Precious Metals Distinction: Troy vs. Avoirdupois
Gold, silver, and platinum are priced in troy ounces, not regular (avoirdupois) ounces. This is an important distinction:
- 1 troy ounce = 31.10 g
- 1 avoirdupois ounce = 28.35 g
- A troy ounce is about 9.7% heavier
When you see "gold at $2,300/oz," that's per troy ounce. If you buy 10 grams of gold: 10 g Γ· 31.10 = 0.3215 troy oz
The weight converter handles troy ounces separately from regular ounces β make sure to select the right one.
Carats for gemstones
Gemstone carat (200 mg) is different from gold carat, which is a purity measure (24 carat = pure gold, 22 carat = 91.7% gold). A 2.5-carat diamond weighs 2.5 Γ 0.2 g = 0.5 g β a relatively small stone despite the impressive carat number.
Traditional South Asian Weight Units
Tola (11.66 g) is still widely used for gold and silver transactions in Bangladesh, India, and Pakistan. Many older family records of gold holdings are in tolas. Jewellers quote prices per tola even as international prices are in grams or troy ounces.
Maund and seer appear in older agricultural and commercial records. The maund varies significantly by region (the British Imperial maund = 82.3 lb = 37.3 kg is the most common reference, but local variants exist).
Ratti is sometimes used for small gemstone weights in traditional contexts β much less common today.
When dealing with family property records, inherited gold, or historical documents, these units appear frequently. The converter handles them alongside metric and imperial.
Tips for Weight Conversions
Keep medication and chemistry in metric. Pharmaceutical and laboratory weights are always in metric β mg, g, kg. Never convert medicine doses to imperial for practical use; the small numbers become meaninglessly small.
For gold: always clarify tola vs. gram vs. troy ounce. These three units are all in active use in South Asian gold markets. A price quote is meaningless without knowing which unit it's per.
Metric tonne vs. US short ton vs. UK long ton. Three different "tonnes": metric tonne = 1,000 kg; US short ton = 907.2 kg; UK long ton = 1,016 kg. For international trade, always specify metric tonne (MT) to avoid ambiguity.
Stone is only used for body weight in UK/Ireland. Outside of those countries, stating weight in stones causes confusion. Convert to kg or lb for any international context.
Frequently Asked Questions
How many grams in a tola? 1 tola = 11.6638 grams β this is the standardised value used for gold transactions. Older regional definitions vary slightly.
Is a pound the same everywhere? The avoirdupois pound (453.592 g) is the standard in most contexts. The troy pound (373.2 g) is used only in precious metals. The difference is significant β always check which is intended in metal trading contexts.
How many kg in a maund? The British Imperial maund = 40 seers = 82.286 lb β 37.32 kg. Local maunds in South Asia varied from 10 to 100+ kg. Use the Imperial standard (37.32 kg) unless you know the specific local definition.
What is a metric tonne? Exactly 1,000 kg. Also called a "tonne" to distinguish it from the US short ton (907.2 kg) and UK long ton (1,016 kg).
Is the weight converter free? Yes β completely free, no sign-up needed.
Weight is the most universally needed measurement β and the variety of units in active use, from milligrams to maunds, is wider than most people realise. The converter handles the full range, including the traditional units that still matter in South Asian gold, land, and agricultural contexts.
Try the Weight Converter free at sadiqbd.com β instant conversion between grams, kg, pounds, ounces, tolas, and more.
