How many centimeters are in an inch?
Exactly 2.54 cm per inch — the inch is defined that way. So 100 cm is about 39.37 inches. Pick the Length tab, type a value, and the conversion appears as you type, in either direction.
How do I convert kg to lbs?
Multiply kilograms by 2.20462 to get pounds, or divide pounds by the same number to get kilograms (1 lb = 0.453592 kg). Use the Weight tab for grams, ounces, stone, and tons too.
How do I convert Celsius to Fahrenheit?
Multiply by 9/5 and add 32: °F = °C × 9/5 + 32. So 37 °C is 98.6
°F. Temperature is handled with proper offset math, and Kelvin is included on
the Temperature tab.
What's the difference between MB and MiB?
A megabyte (MB) is 1,000,000 bytes; a mebibyte (MiB) is 1,048,576 bytes (1024²). Storage is usually sold in decimal MB/GB while operating systems often report binary MiB/GiB, which is why a "1 TB" drive shows as ~931 GiB. The Data tab has both.
Is anything uploaded?
No. Conversions run entirely in your browser using exact factors — nothing is sent anywhere.
Common use cases
- Recipes — cups, milliliters, ounces, and grams.
- Travel — miles to kilometers, Fahrenheit to Celsius.
- DIY and shipping — feet, meters, pounds, kilograms.
- Tech — bytes, kibibytes, and gigabytes.