Unit Converter
Convert length, weight, temperature, area, volume, speed, time, and data units instantly. Fast, accurate, and works offline.
| Common conversions | Value |
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Why use this unit converter?
Unit conversion sounds simple until you actually need to do it. Maybe a recipe gives the ingredients in ounces, a product specification uses inches, or a travel distance is listed in miles instead of kilometers. You can work out each conversion manually, but using a converter is usually quicker and less likely to lead to a wrong number.
This converter keeps the most commonly needed units together, so you can switch between them without opening another tool every time.
- 10 useful categories. Convert length, weight, temperature, area, volume, speed, time, data, pressure, and energy.
- Results update as you type. There is no need to press a separate conversion button.
- Convert in either direction. You can enter a value in either field and switch the units whenever needed.
- Metric and imperial units. Both measurement systems are available for everyday conversions.
- Your values stay on your device. The calculations are performed in your browser.
- Useful without a connection. After the page has loaded, the converter can continue working offline.
How to use the unit converter
- Choose the type of measurement you want to convert, such as Length, Weight, or Temperature.
- Enter your number in the From field.
- Select the unit you are starting with.
- Choose the unit you want from the To menu.
- The converted value will appear automatically. You can also use the swap button when you want to reverse the conversion.
Categories at a glance
| Category | Common uses | Example conversion |
|---|---|---|
| Length | DIY work, travel, measurements | 1 meter = 3.28084 feet |
| Weight | Cooking, shipping, fitness | 1 kilogram = 2.20462 pounds |
| Temperature | Weather, cooking, science | 100°C = 212°F |
| Area | Land, property, flooring | 1 acre = 4,046.86 m² |
| Volume | Recipes, liquids, fuel | 1 liter = 0.264172 US gallons |
| Speed | Driving, cycling, travel | 100 km/h = 62.1371 mph |
| Time | Planning, schedules, work | 1 week = 168 hours |
| Data | Storage, downloads, file sizes | 1 GB = 1,000 MB |
| Pressure | Tyres, weather, engineering | 1 bar = 14.5038 psi |
| Energy | Food, electricity, science | 1 kcal = 4.184 kJ |
An example
Imagine you are following a recipe that asks for 2 US cups of a liquid, but your measuring jug shows milliliters. Select Volume, enter 2, choose Cup (US) as the starting unit, and select Milliliter as the target unit. The converter will show approximately 473.176 ml.
The same process works for the other categories. Choose the measurement type, enter the value, select the two units, and check the result.
Pro tips
- Use the swap button when needed. If you accidentally choose the units in the wrong order, there is no need to start over.
- Check US and UK units carefully. Gallons, pints, and fluid ounces can have different values depending on the measurement system.
- Be careful with digital storage. Storage manufacturers generally use decimal units, while some computer systems display storage using binary-based values. That is why the number shown on a computer may not match the number printed on a drive.
- Negative temperatures are supported. For example, -40°C and -40°F represent the same temperature.
- Keep the converter handy. It can save time when you regularly work with recipes, measurements, travel distances, file sizes, or technical specifications.
A note on privacy
The conversion calculations are handled in your browser, so the values you enter do not need to be sent to a server just to calculate the result. This is useful when you are working with measurements that you would rather keep on your own device.
If there is a particular measurement or category you would like to see added, you can let us know through the contact page.