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Length
9 units · 72 conversions
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Weight & Mass
7 units · 42 conversions
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Temperature
4 units · 12 conversions
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Area
7 units · 42 conversions
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Volume
9 units · 72 conversions
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Speed
6 units · 30 conversions
⏱️
Time
8 units · 56 conversions
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Pressure
7 units · 42 conversions
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Energy
6 units · 30 conversions
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Power
5 units · 20 conversions
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Data Storage
7 units · 42 conversions
Most Popular Conversions
📏 Centimeter → Inch ⚖️ Kilogram → Pound 🌡️ Celsius → Fahrenheit 📏 Kilometer → Mile ⚖️ Pound → Kilogram 🌡️ Fahrenheit → Celsius 📏 Meter → Foot 💨 Kilometer per Hour → Mile per Hour 💾 Gigabyte → Megabyte 🔋 Kilowatt → Horsepower (mech) ⬜ Acre → Square Meter 🔩 PSI → Bar ⏱️ Hour → Minute ⚡ BTU → Kilojoule

About Unitafy

Unitafy is a free, comprehensive unit conversion tool covering 11 categories and hundreds of unit pairs. From everyday conversions like cm to inches or kg to lbs, to technical conversions for engineering and science — all handled instantly in your browser.

All conversions use accurate factors from the International System of Units (SI). No signup required. Works offline once loaded.