Converters

Learn how to convert between square feet, square metres, kathas, bighas, decimals, acres, and hectares — with real examples for land buying, construction, and farming in Bangladesh.

A 500 MW wind farm doesn't deliver 500 MW continuously — its 40% capacity factor means average output closer to 200 MW. Here's how capacity factors compare across energy sources, what "homes powered" claims actually mean, how grids balance intermittent renewables, and solar panel output calculations.

A leap second adds 23:59:60 to the clock — a second most software assumes can't exist. Here's how the 2012 Linux kernel leap second bug took down Reddit, Yelp, and LinkedIn by sending CPU usage to 100%, how Google and AWS "smear" the leap second across hours to make it disappear gracefully, and why the ITU voted in 2022 to abolish leap seconds entirely before 2035 — ending a recurring distributed systems disaster that occurs every few years.

Learn how frequency units like Hz, kHz, MHz, GHz, and RPM relate to each other, with real examples from audio, radio, computing, and motor engineering — plus a free frequency converter.

Your body contains ~5 litres of blood, can expand its stomach to 3–4 litres, filters 180 litres of plasma through the kidneys daily, and your lungs hold ~6 litres at maximum capacity. Here's how physiological volume measurements work and what they reveal about cardiovascular shock, respiratory disease diagnosis, and satiety.

EVs measure efficiency in kWh/100km or miles per kWh — and once you convert those numbers to petrol equivalents, the running cost comparison becomes clear. Here's the full calculation with home charging vs. public charging, and why winter dramatically affects real-world range.

Power is the rate of energy use — the difference between kW and kWh explains your electricity bill. Here's how to calculate running costs for any device, data centre PUE and why AI training is energy-intensive, and EV charger power levels compared.

The FX market trades $7.5 trillion daily but individuals always participate at the least favourable end — paying 3-5% at banks vs 0.3-1% at specialist services, with costs hidden in the spread rather than explicit commissions. Here's how the interbank rate is formed, the three components of exchange cost (spread, commission, transfer fee), how to calculate the true all-in cost percentage against mid-market, and why unusual currency pairs are cheaper to exchange via two USD legs than directly.

Learn why fuel economy comparisons across countries require unit conversion, how US and UK MPG differ, how to calculate annual fuel savings, and how to use a free fuel economy converter to compare any vehicles.

Learn pressure unit relationships (Pa, kPa, bar, PSI, atm, mmHg), tyre pressure conversion, blood pressure interpretation, weather forecasting, and the difference between absolute and gauge pressure — with a free converter.