Loading tool...
Unit Converter — Free Online Tool
One page for the everyday conversions that come up in school, cooking, travel and work. Pick a category — length, weight, temperature, speed, area or volume — choose the unit you have and the unit you want, type a value and the answer updates immediately to four decimal places. Length covers metres, kilometres, centimetres, millimetres, feet, inches, yards and miles; weight handles kilograms, grams, milligrams, pounds and ounces; temperature switches between Celsius, Fahrenheit and Kelvin; speed includes metres per second, km/h, mph and knots; area spans square metres, square kilometres, square feet, acres and hectares; and volume converts litres, millilitres, gallons and cups. Typical uses include turning kilometres into miles for a road trip, pounds into kilograms for a gym plan or shipping parcel, Fahrenheit oven settings into Celsius for a recipe, and square feet into square metres when comparing flat sizes in India with overseas listings. The tool uses standard conversion factors and the exact formula for temperature, with no hidden rounding until the final display. Regional land units such as bigha, gaj and cent differ by state, so convert them to square feet or square metres using your local definition first. It runs in your browser, supports mobile screens and never stores your values.
Use our Unit Converter on AllConvertor — no registration, no download, works on iPhone, Android, Windows, and Mac. All processing runs in your browser when possible for maximum privacy and speed.
How to use Unit Converter
- Choose the conversion type, such as length or weight.
- Enter the amount you want to convert.
- Select the From and To units.
- Read the converted value shown below.
Key benefits
- ✓ 100% free — no paywall or trial limits
- ✓ No account or email required
- ✓ Mobile-friendly responsive design
- ✓ Instant results in your browser
- ✓ Secure — data stays on your device
- ✓ Trusted by thousands of users daily
Popular searches
Frequently Asked Questions
Which types of units can I convert?
Length, weight, temperature, speed, area and volume. Pick the type from the dropdown, then choose the from and to units.
How do I convert Celsius to Fahrenheit?
Multiply the Celsius value by 9/5 and add 32. For example, 30°C is 86°F. Select Temperature and choose C and F in the tool to do it automatically.
How many square feet are in a square metre?
One square metre is about 10.764 square feet, and one square foot is 0.092903 square metres.
Can I convert Indian land units like bigha or gaj?
These units vary by state and region, so they are not included. Convert them to square feet or square metres using your local definition first, then use this tool for the rest.
How accurate are the conversions?
The tool uses standard conversion factors and shows four decimal places. Some factors, such as the mile, are rounded to six significant digits, which is accurate enough for everyday use.