Unit Converter
Convert between common units of length, weight, volume, area, speed, time, data, pressure and energy.
How to use the Unit Converter
- Choose a category such as Length or Weight.
- Enter the value and pick the 'from' and 'to' units.
- Read the result, plus conversions to every other unit in the category.
- Use ⇄ to swap units.
All everyday conversions in one place
Recipes in cups, fuel in gallons, heights in feet, distances in miles, weights in pounds, storage in GB. Everyday life mixes metric and imperial units. This converter covers nine categories and shows every unit at once, so you can compare quickly.
Categories and units
- Length: mm, cm, m, km, inch, foot, yard (gaj), mile, nautical mile.
- Weight: mg, g, kg, quintal, tonne, tola, ounce, pound, stone.
- Volume: ml, litre, cubic metre, teaspoon, tablespoon, cup, fluid ounce, gallon (US and UK), cubic foot.
- Area: sq mm to sq km, hectare, sq inch, sq ft, sq yard, acre.
- Speed, time, digital storage, pressure and energy, including kWh (electricity units) and PSI (tyre pressure).
Handy reference
| From | To |
|---|---|
| 1 inch | 2.54 cm |
| 1 foot | 30.48 cm |
| 1 mile | 1.609 km |
| 1 kg | 2.205 pounds |
| 1 tola | about 11.66 g |
| 1 acre | 43,560 sq ft |
Indian units
Traditional land units like bigha, biswa, kanal and guntha vary by state; use the dedicated land area converter. Gold weights in tola are included in Weight. For temperatures, use the temperature converter; for currencies, the currency converter.
Accuracy
Conversions use standard definitions (for example, 1 inch = exactly 2.54 cm) and show up to six decimal places, with scientific notation for very large or small numbers.
Quick answers
How many litres are in a gallon? About 3.785 litres in a US gallon and 4.546 in a UK gallon. How many kg is a quintal? 100 kg. How do I convert km/h to m/s? Divide by 3.6. How many kWh is 1 unit of electricity? Exactly 1; a “unit” on your bill is one kilowatt-hour. How many square feet are in a square metre? About 10.764.
Tip: use ⇄ to reverse any conversion instantly without re-selecting units. Results update as you type, so you can try several values quickly.
Frequently asked questions
How many cm are in a foot?
How many grams is one tola?
Is 1 GB 1000 MB or 1024 MB?
Can I convert bigha here?
Related tools
- Land Area ConverterConvert bigha, biswa, gaj, kanal, marla, guntha, cent, acre, hectare and sq ft with state-wise bigha values for Rajasthan, UP, Bihar and more.
- Currency ConverterConvert US dollars, euros, pounds, rupees, dirhams and 160+ currencies with daily updated mid-market rates. Free and instant.
- Temperature ConverterConvert Celsius to Fahrenheit, Fahrenheit to Celsius and Kelvin instantly. See the formulas and body temperature, oven and weather references.
- Number to Words (Indian System)Write any amount in words in the Indian system for cheques and invoices: 120000 becomes Rupees One Lakh Twenty Thousand Only. With paise.
- Roman Numeral ConverterConvert numbers to Roman numerals and Roman numerals to numbers from 1 to 3999. Strict validation, with the rules explained. Free and instant.
- Lakh & Crore to Million & BillionConvert lakh and crore to million and billion and back, with Indian and international comma formats. 1 crore = 10 million, 100 crore = 1 billion.