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Unit converter

Instant conversions for length, weight, temperature, area, volume, speed, time and data size.

Processed in your browser. Files are never uploaded.

Result

39.3701

100 cm = 39.3701 in

How to use the unit converter

  1. Pick a category such as Length or Temperature.

  2. Choose the from and to units.

  3. Type a value – the result appears instantly.

  4. Use Swap to reverse, and set the decimal precision you need.

  • No upload

    Your files are processed on your device and never sent anywhere.

  • Free, no signup

    No account, no watermark and no daily limit.

  • Fast

    No upload or download wait – results appear in seconds.

What is Unit converter?

Unit converter covers the conversions people look up every day: centimetres to inches, kilograms to pounds, Celsius to Fahrenheit, square feet to square metres, litres to gallons, km/h to mph, hours to seconds and megabytes to gigabytes. Results update as you type.

When to use it

  • Convert your height or weight between metric and imperial.
  • Check oven temperatures in Fahrenheit or Celsius.
  • Convert flat sizes between square feet and square metres.
  • Work out file sizes in MB, GB, MiB or GiB.

Tips for the best result

  • Data size includes both decimal (MB) and binary (MiB) units.
  • Temperature uses exact formulas, not factors.
  • Increase precision for scientific work.

Limits and privacy

Currency is not included because exchange rates need live data. Processing happens entirely in your browser, so your data never leaves your device and there is nothing to sign up for. Files are processed in your browser and never uploaded.

Many people who use Unit converter also need Percentage calculator or Age calculator, and EMI / loan calculator is one click away. Every MondayKit tool works the same way – open the page, add your input, get the result – with no account, no watermark and no upload.

Frequently asked questions

How many centimetres are in an inch?

Exactly 2.54 centimetres, by international definition.

How do I convert Celsius to Fahrenheit?

Multiply by 9/5 and add 32. For example 25 °C × 9/5 + 32 = 77 °F.

Is 1 GB 1000 or 1024 MB?

In SI units 1 GB = 1000 MB. In binary units 1 GiB = 1024 MiB. Both sets of units are available.

How precise are the results?

Factors use exact definitions where they exist; choose up to 10 decimal places of display precision.

Related tools

Percentage calculatorWork out percentages, % change and increases or decreases.Age calculatorCalculate exact age in years, months and days, and next birthday.EMI / loan calculatorCalculate loan EMI, total interest and an amortization schedule.Word counterCount words, characters, sentences and reading time live.Image converterConvert between JPG, PNG and WebP (and read GIF/BMP).

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