How is temperature handled?

Temperature can't be converted by a simple factor, so the tool converts through Celsius with the correct offsets (°F = °C × 9/5 + 32; K = °C + 273.15).

Which length units are supported?

Meter, kilometer, centimeter, millimeter, mile, yard, foot, inch and nautical mile.

Are the factors exact?

Yes — they use the standard SI definitions (e.g. 1 inch = 0.0254 m exactly, 1 lb = 0.45359237 kg exactly).

Can I swap source and target?

Yes, the arrow button swaps both units and moves the current result into the input field.

Are conversions done locally?

100% in your browser. No network requests at all.

Unit Converter

Length, weight, temperature, area, volume & speed — all in one.

100% private — no uploads Unit & Data ConvertersFree & unlimited Read tutorial

See how it works

Watch a quick simulation of this tool in action — no file needed.

How to use Unit Converter

Follow these steps — everything happens instantly in your browser.

1
Step 1. Pick a category (length, weight, temperature, area, volume or speed).
2
Step 2. Enter the value you want to convert.
3
Step 3. Choose the source and target units.
4
Step 4. Read the result instantly, or hit the swap arrows to reverse.

Why use this tool

Frequently asked questions

Everything you might want to know about unit converter.

Related tools

File Size Converter

Convert between B, KB, MB, GB, TB & PB — 1024-based.

Open

Timezone Converter

See one instant across the world's major timezones.

Open

Roman Numerals Converter

Convert decimal ↔ Roman (1–3999) — two-way, validated.

Open

Aspect Ratio Calculator

Find the missing dimension for any aspect ratio.

Open