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Unit Converter

Convert length, weight, temperature, area, volume, speed and data sizes with a per-unit breakdown.

Same value in every unit of this category

How to use it

  1. Type a value — decimals with a dot or a comma both work.
  2. Pick a category (length, weight, temperature, area, volume, speed, data size) and the from/to units.
  3. The result appears immediately, and the panel below lists the same value in every unit of that category.
  4. Use ⇄ to swap the from/to units without retyping.

Common use cases

Why it stays private

Every conversion is a local multiplication in your browser — no requests, no history, nothing stored.

FAQ

Q: How accurate are the conversions? A: Factors use exact standard definitions (1 in = 0.0254 m, 1 lb = 0.45359237 kg, US customary volumes). Results are rounded for display only; the underlying math is full precision.

Q: What is the difference between GB and GiB? A: GB is decimal (1 GB = 1,000,000,000 bytes) as storage vendors use; GiB is binary (1 GiB = 1,073,741,824 bytes) as operating systems often report. Both are listed so you can compare.

Q: Does it work offline? A: Yes. After the page loads, conversion runs entirely locally.

Your data stays on this device

Unit Converter runs 100% locally. Everything you paste or drop is processed by your own browser and never transmitted. Nothing is stored on our servers — close the tab and it is gone.

Nothing you type is sent to a server, logged, or used for analytics. The page works even with your network disconnected after first load.