How many unit categories are supported?

Eight: Length, Weight/Mass, Temperature, Volume, Area, Speed, Data Storage, and Energy. Each category includes all commonly used units.

How does temperature conversion work?

Temperature uses formulas (not simple multipliers). For example, °C to °F uses F = C × 9/5 + 32. The formula is displayed below each result.

What is the difference between KB and KiB?

KB (kilobyte) = 1000 bytes (decimal). KiB (kibibyte) = 1024 bytes (binary). The Data Storage category includes both standards for accurate conversion.

Is my conversion history saved?

Your last 10 conversions are saved in your browser's localStorage for quick reference. No data is sent to any server.

Unit Converter

Convert between units of length, weight, temperature, and more.

How it works

1
Pick a category

Select a unit category like Length, Weight, or Temperature from the tabs.
2
Enter a value

Type a number in the input field and select the source unit.
3
See all conversions

All units in the category update instantly showing the converted values.
4
Swap units

Click the swap button to reverse the from/to direction.

Common use cases

Length conversion

5 kilometers
Temperature conversion

100 °C

About This Tool

Instantly convert between units across 8 categories: length, weight, temperature, volume, area, speed, data storage, and energy. See all conversions at once as you type, with the formula shown for transparency.

Pure math -- no server calls, no rounding surprises. Supports both metric and imperial units.

More examples

Examples

Length conversion

Input

5 kilometers

Output

5 km = 3.107 mi = 16,404.2 ft = 5,000 m

Temperature conversion

Input

100 °C

Output

100 °C = 212 °F = 373.15 K

Frequently Asked Questions

How many unit categories are supported?: Eight: Length, Weight/Mass, Temperature, Volume, Area, Speed, Data Storage, and Energy. Each category includes all commonly used units.
How does temperature conversion work?: Temperature uses formulas (not simple multipliers). For example, °C to °F uses F = C × 9/5 + 32. The formula is displayed below each result.
What is the difference between KB and KiB?: KB (kilobyte) = 1000 bytes (decimal). KiB (kibibyte) = 1024 bytes (binary). The Data Storage category includes both standards for accurate conversion.
Is my conversion history saved?: Your last 10 conversions are saved in your browser's localStorage for quick reference. No data is sent to any server.

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