Unit Converter
Convert between everyday units in one place: length, weight, area, volume, speed, digital storage and temperature. It includes units common in India such as the acre, hectare, quintal, tola and square yard.
Last reviewed:
- 1 Kilometre (km) equals
- 0.621371 Mile (mi)
| Millimetre (mm) | 10,00,000 |
|---|---|
| Centimetre (cm) | 1,00,000 |
| Metre (m) | 1,000 |
| Kilometre (km) | 1 |
| Inch (in) | 39,370.07874 |
| Foot (ft) | 3,280.839895 |
| Yard (yd) | 1,093.613298 |
| Mile (mi) | 0.621371 |
Pick a category, enter a value and choose the units. You also see the same value in every other unit of that category, so one entry answers several questions.
How to use this calculator
- Choose a category such as Length or Weight.
- Type the value to convert.
- Select the From and To units.
- Read the result, or scan the table for the value in every other unit.
Formula and variables
Result = Value × (factor of From unit ÷ factor of To unit) Fahrenheit = Celsius × 9 ÷ 5 + 32 Kelvin = Celsius + 273.15
- Factor - the size of a unit in the category's base unit, such as metres for length or kilograms for weight.
- Temperature - converted through Celsius, since the scales have different zero points.
1 inch = 2.54 cm, 1 foot = 0.3048 m, 1 mile = 1,609.344 m, 1 pound = 0.45359237 kg and 1 acre = 4,046.8564224 m². The tola uses 11.6638038 g.
Worked example
How many square feet are in an acre?
| Category | Area |
|---|---|
| Value | 1 acre |
| In square feet | 43,560 sq ft |
| In hectares | 0.404686 hectare |
- 1 acre = 4,046.8564224 m².
- 1 sq ft = 0.09290304 m².
- 4,046.8564224 ÷ 0.09290304 = 43,560.
What changes the result
- Regional units. Land units such as bigha, guntha and katha differ by state, so they are not included.
- Data units. This tool uses 1,024-based units (1 KB = 1,024 bytes), as many operating systems do.
- Gallons. US and imperial gallons are different sizes, so both are listed.
- Rounding. Results show up to six decimal places.
Benefits and practical uses
- Seven categories in one tool.
- Includes Indian units such as acre, quintal and tola.
- Shows every unit at once.
Assumptions and limitations
- Conversion factors are exact SI or legal definitions, except where noted.
- Temperature below absolute zero is rejected.
- Local or regional land measures are not included.
Frequently asked questions
How many square feet are in an acre?
One acre is 43,560 square feet.
How many kilograms are in a quintal?
A quintal is 100 kg, and a tonne is 1,000 kg.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5 and add 32. For example, 100 °C is 212 °F.
How much is a tola in grams?
The Indian standard tola is 11.6638038 grams.
Why do US and imperial gallons differ?
A US gallon is 3.785 litres and an imperial gallon is 4.546 litres.
Is 1 KB 1,000 or 1,024 bytes?
Here, 1 KB is 1,024 bytes. Some storage makers use 1,000, so disk sizes may differ slightly.
References
Page last reviewed on . This calculator gives estimates for planning only; it is not financial advice and not an offer from any lender.