Utility ToolsFree
Unit Converter
Convert between hundreds of units across length, weight, temperature, area, volume, speed, time, data storage, and energy. Instant conversion as you type — no form submission needed. Supports both metric and imperial systems. No signup required.
Updated June 2026
- 1Choose a category
- 2Enter a value
- 3Read the converted value
1 Meter =
0.00100000
Kilometer
How to use Unit Converter
- 1
Choose a category
Select length, weight, temperature, volume, or another unit category.
- 2
Enter a value
Type the number you want to convert.
- 3
Read the converted value
The result updates instantly across all related units.
Frequently asked questions
Everything you need to know about unit converter.
Length (km, miles, feet, inches), weight/mass (kg, lbs, oz, grams), temperature (°C, °F, K), area (m², ft², acres), volume (liters, gallons, ml), speed (km/h, mph, m/s), time, data storage (MB, GB, TB), and energy (joules, calories, kWh).
Yes. All categories include both metric (SI) and imperial/US customary units. Switch between them with a single click.
Yes. Results update instantly as you type — no need to press a button or submit a form.
Yes. When you enter a value, the tool displays conversions to all units in that category at once.
Conversions use precise mathematical constants (e.g., 1 inch = 2.54 cm exactly). Results are displayed to 6 significant figures by default.
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