Unit Converter

About the Unit Converter

Unit conversion is the most reached-for utility in any tool belt — length for travel, weight for cooking, data for storage, temperature for travel and cooking both. This converter covers all 8 major physical categories with NIST-grade precision, updates live, and runs entirely in your browser.

Features

8 categories: Length, Weight, Volume, Area, Speed, Time, Data storage, Temperature
50+ units covering metric, imperial, and industry-specific scales
All conversions update live as you type
One-click copy for every output
Both decimal (KB = 1000 B) and binary (KiB = 1024 B) data units

How it works

Pick a category (Length, Weight, Temperature, etc.).
Enter a value and choose its unit.
Every other unit in the category updates instantly.
Click any cell to copy that converted value.

Use cases

International business
Cooking with foreign recipes
Engineering calculations
Travel planning
Data capacity planning

Frequently asked questions

How precise are the conversions?

We use exact ratios from NIST/SI definitions and render up to 12 significant figures. Results with tiny decimals switch to scientific notation automatically.

Is 1 MB = 1000 KB or 1024 KB?

Both — we show them separately. MB/GB/TB are decimal (1000-based, used by disk manufacturers and network speeds). MiB/GiB/TiB are binary (1024-based, used by operating systems).

Are US and UK gallons the same?

No. 1 US gallon ≈ 3.785 L; 1 UK gallon ≈ 4.546 L. We include both.

Does temperature use exact conversions?

Yes. Celsius, Fahrenheit, and Kelvin use their exact formulas — Fahrenheit = Celsius × 9/5 + 32, Kelvin = Celsius + 273.15.

Can I add custom units?

Not yet — the 50+ built-in units cover ~99% of real-world needs. If you need an unusual unit, reach out.

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