Tool2Help

Unit Converter

Convert between units across eight categories, from centimetres and inches to gigabytes and gibibytes.

1 metre = 100 centimetres
Result

Common conversions in this category

About the unit converter

One converter that covers the units people actually look up: length, weight, temperature, area, volume, speed, digital storage and time. Conversions use exact ratios where an exact ratio exists, so an inch is precisely 25.4 millimetres rather than a rounded approximation. Results update as you type in either field, which makes it easy to work backwards from a target value.

How to use the unit converter

  1. Choose a category such as length, weight or temperature.
  2. Pick the unit you are converting from and the unit you want.
  3. Type a value into either field. The other side updates immediately.
  4. Copy the result, or swap the two units to reverse the conversion.

Frequently asked questions

Why is my temperature conversion not a simple multiplication?
Celsius and Fahrenheit have different zero points as well as different scale sizes, so the conversion needs an offset: F = C x 9/5 + 32. Kelvin shares the Celsius degree size but starts at absolute zero, so it is C + 273.15.
What is the difference between a megabyte and a mebibyte?
A megabyte (MB) is 1,000,000 bytes using decimal prefixes, while a mebibyte (MiB) is 1,048,576 bytes using binary prefixes. Storage manufacturers advertise in MB and GB, but operating systems often report in MiB and GiB, which is why a "1 TB" drive shows as about 931 GB.
How accurate are these conversions?
Conversions use internationally defined ratios, which are exact for most length, weight and volume units. Results are displayed to a sensible number of significant figures rather than the full floating point value.

Other free tools people use alongside the Unit Converter.

BMI Calculator Calculate your Body Mass Index in metric or imperial units and see the healthy weight range for your height. Calculators Tip Calculator Enter the bill, pick a tip percentage, and see the tip, the total and the amount each person owes. Calculators Loan Calculator Calculate the monthly payment, total interest and full cost of a loan, with a year-by-year amortization breakdown. Calculators Password Generator Generate a strong random password using your browser cryptographic random number generator. Nothing is sent anywhere. Generators