Unit Converter · Free online tool · 100% offline · No data collection Open in App
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What is Unit Converter?

Unit Converter is a free online tool that converts between dozens of units across categories — length (m, ft, mi, km), weight (kg, lb, oz), temperature (°C, °F, K), data size (B, KB, MB, GB, TB), area, volume, speed, and time. Instant conversion with live results as you type. All calculations run locally.

How to use Unit Converter

1 Select a category (length, weight, temperature, etc.)
2 Enter your value and select the source unit
3 The target unit updates instantly — change it to see different conversions
4 Copy the result for use in your project or document

Common use cases

Frequently Asked Questions

How many unit categories are available?

Length, weight, temperature, data size, area, volume, speed, and time — with dozens of units in each category.

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