ToolUnit Converter
Convert length, weight, area, volume, temperature, speed, time and digital storage. It also includes everyday South Asian units such as tola, pavan (sovereign), cent, guntha and acre.
How to convert units
- Choose a category such as Length, Weight, Area or Temperature.
- Type the value and pick the “from” and “to” units. The answer appears instantly.
- Use the swap button to reverse the conversion, and scroll to see the value in every unit of that category.
Units covered
The converter handles length (mm to miles and nautical miles), weight (mg to tonnes, pounds, ounces, stone, troy ounce, tola and pavan), area (square units, hectare, acre, cent and guntha), volume (litres, US cups, spoons, pints and US/UK gallons), temperature (Celsius, Fahrenheit, Kelvin), speed, time and digital storage in both decimal (KB, MB, GB) and binary (KiB, MiB, GiB) units.
Gold and land units used in India and the Gulf
A tola is traditionally 11.664 grams (about 0.375 troy ounce) and is still quoted for gold and silver in India and the Gulf. A pavan or sovereign, the unit Kerala jewellers quote, is 8 grams. For land, a cent is one hundredth of an acre (about 435.6 square feet or 40.47 square metres), and a guntha is one fortieth of an acre (1,089 square feet).
Regional definitions of some of these units vary slightly, so confirm the unit your jeweller or land record uses before a transaction. To see today’s prices, use the gold rate page.
Decimal vs binary storage, and other common pitfalls
- 1 GB is not 1 GiB. Storage makers use decimal units (1 GB = 1,000,000,000 bytes) while operating systems often show binary units (1 GiB = 1,073,741,824 bytes), which is why a “500 GB” drive looks smaller on a computer.
- Gallons differ. A US gallon is 3.785 litres and a UK (imperial) gallon is 4.546 litres.
- Months and years are approximations in the time category (30.44 days and 365.25 days).
- Temperature is not a simple ratio, so it is converted with the correct formulas rather than a multiplier.
Frequently asked questions
How many square feet are in a cent?
One cent is about 435.6 square feet (40.47 square metres). One acre is 100 cents, which is 43,560 square feet.
How many grams are in a tola and a pavan?
A tola is 11.664 grams and a pavan (sovereign) is 8 grams. Some regions use slightly different traditional values, so confirm with your jeweller.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32. For example 100 °C is 212 °F. Choose Temperature, then Celsius to Fahrenheit and the tool does it for you.
Why does my 500 GB drive show less space?
Drive makers count 1 GB as 1,000,000,000 bytes, while many operating systems report in binary GiB (1,073,741,824 bytes). Convert GB to GiB to see the difference.
Is the converter accurate?
It uses exact or internationally defined conversion factors and rounds the displayed result to about 10 significant digits. Results are for general use, not for legal or scientific certification.