Length, weight, temperature, volume, speed, area, data storage & time
Conversions update in real-time as you type — no waiting
From millimeters to miles, milliseconds to years, bits to terabytes
See your value converted to every unit in the category at once
1 mm = 0.001 m
1
mm0.1
cm0.001
m1.0000e-6
km0.039370079
in0.0032808399
ft0.0010936133
yd6.2137e-7
miSelect a category (Length, Weight, Temperature, etc.), enter a value, and choose the units to convert from and to. The result updates instantly. Use the swap button to reverse the conversion, or check the Quick Reference table to see all conversions at once.
The converter supports 8 categories: Length (mm to miles), Weight (mg to tons), Temperature (°C, °F, K), Volume (mL to gallons), Speed (m/s to mph), Area (mm² to mi²), Data Storage (bits to TB), and Time (ms to years).
All conversions use standard conversion factors with high precision. Results are displayed with up to 8 significant figures. For very large or very small numbers, scientific notation is used automatically.
Yes! The Quick Reference section below the converter shows your input value converted to every unit in the selected category simultaneously. This makes it easy to compare multiple conversions at a glance.
The swap button (↕) exchanges the "from" and "to" units and updates the input value to the current result. This lets you quickly reverse a conversion without re-entering numbers.
Yes, completely free with no signup required. All calculations run in your browser — nothing is sent to a server. Use it unlimited times for any purpose.
Currently, the tool focuses on physical measurement units (length, weight, etc.) and data units. Currency conversion requires live exchange rates from an API, which is planned for a future update.
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