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
- Type a value — decimals with a dot or a comma both work.
- Pick a category (length, weight, temperature, area, volume, speed, data size) and the from/to units.
- The result appears immediately, and the panel below lists the same value in every unit of that category.
- Use ⇄ to swap the from/to units without retyping.
Common use cases
- Reading foreign recipes — cups, tablespoons and fluid ounces against millilitres and litres.
- Hardware and network work — GB versus GiB (decimal 1000-based versus binary 1024-based) side by side.
- Travel and fitness — miles to kilometres, pounds to kilograms, Fahrenheit to Celsius.
- Reports and invoices — hectares to acres, square feet to square metres for international documents.
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.