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Unit Converter

Length, weight and temperature — converted instantly, both directions.

How this works

Pick a category, enter a value and choose your units — the tool converts through a base unit (meters, kilograms, Celsius) so every pair is exact.

Temperature uses the proper offset formulas, not just scaling — because 0°C isn’t 0°F.

Frequently Asked Questions

How accurate are the conversions?

Factors use international definitions (1 inch = 2.54 cm exactly); results round to 6 decimals.

Why only three categories?

Length, weight and temperature cover the everyday conversions — more categories are on the roadmap.

Does it work offline?

Yes — all math runs locally in your browser.

How to use the Unit Converter

  1. Choose a category — length, weight or temperature.
  2. Enter a value and pick from/to units.
  3. Convert — or just type, it updates live.

Why use our Unit Converter?

  • Three categories — length, weight, temperature.
  • Exact factors — international definitions, 6-decimal precision.
  • Live conversion — updates as you type.
  • Free and private — no account, runs locally.

About this tool

Miles or kilometers? Pounds or kilograms? Convert between metric and imperial units across length, weight, temperature, volume and more — with precise factors, not rough guesses.

  • Length, weight, temperature, volume & more
  • Precise conversion factors
  • Swap direction in one click