ConverterConverter
A converter that is open the moment the page is. Type an amount, pick the two units and the answer appears, worked from the exact definitions, with the sum shown. The tabs above switch to temperature, cooking measures and a recipe scaler.
- Length, weight, volume, area and speed, with a swap button.
- Every factor comes from its exact definition: 1 inch is 2.54 cm, 1 pound is 0.45359237 kg.
- US and UK gallons, pints and fluid ounces are labelled apart.
- Free
- Works offline after your first visit
- Saves on this device
- No sign-up
- Updated
- Size 25 KB
Try an example
- cm to inches30 cm
- kg to lbs70 kg
- miles to kmA marathon, 26.2 miles
- Liters to US gallonsA 20 liter can
- Liters to UK gallonsThe same can, imperial
- mph to km/h65 mph
More apps like this
- Temperature converterType a temperature and pick its scale.
- Cooking converterCups and spoons convert exactly to each other and to milliliters.
- Recipe scalerPaste or type the ingredients, one a line, then say how many the recipe makes and how many you want, or scale it by a factor.
- CalculatorBig buttons, percentages, tips and fractions, with the working shown.
Questions
Is this converter free?
Yes. It is free, it needs no sign-up and nothing to install. It opens ready to use and keeps working without a connection after your first visit.
How exact are the answers?
Each unit is defined exactly, such as 1 inch = 2.54 cm and 1 pound = 0.45359237 kg, and the sum is worked in exact fractions. When the answer has more digits than shown it is rounded to six figures and marked with ≈.
What is the difference between US and UK gallons?
A US gallon is 231 cubic inches, 3.785411784 liters. A UK (imperial) gallon is 4.54609 liters, about 20% more. Pints and fluid ounces differ too, so the converter labels each one US or UK.
Where is my last conversion kept?
Only in this browser on this device. Nothing is sent anywhere. Share makes a link with the numbers in it.
A question we didn’t answer? Email support@handeware.com and a real person will reply.