Welcome to UnitConversion.io

Welcome to UnitConversion.io. This website was made to be the best unit conversion website on the internet. The way that I hope to achieve this is to make the pages extremely fast and responsive. As you will see below, there are many unit types and an extensive unit list to choose from, which differentiates UnitConversion.io from other similar sites. Our aim is to be a destination for students, professionals, and everyone in between for converting units quickly and in a well presented format. I hope you enjoy the site, and contact me if you have any feedback!

Blog

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Your Mac is shiny. It is fast. It is friendly. But it is missing one tiny thing that many developers love: a simple package manager. That is where Homebrew walks in, wearing a tiny wizard hat, ready to install tools with one command. TLDR: Homebrew is a f... Read more


Online Background Removers With HD Download Support

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Best AI Photo Isolation Tools for Product Images

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iPhone Purple Screen Light Issue: Causes and Solutions Explained

May 21st, 2026
When an iPhone begins showing a purple screen light, purple tint, violet glow, or sudden purple flashes, it can be alarming for the owner. The issue may appear as a faint color cast across the display, a bright purple patch near one edge, flickering purple lines, or a completely purple screen tha... Read more



Unit Conversion



mm

=

cm

Unit Types

Length

Convert units of length. Examples of such units are millimeters and meters.

Length Conversion

Area

Convert units of area. Examples of such units are millimeters squared and centimeters squared.

Area Conversion

Mass

Convert units of mass. Examples of such units are micrograms and ounces.

Mass Conversion

Volume

Convert units of volume. Examples of such units are cups and pints.

Volume Conversion

Temperature

Convert units of temperature. Examples of such units are fahrenheit and rankine.

Temperature Conversion

Time

Convert units of time. Examples of such units are milliseconds and minutes.

Time Conversion

Speed

Convert units of speed. Examples of such units are meters per second and kilometers per hour.

Speed Conversion

Pressure

Convert units of pressure. Examples of such units are hectopascals and torrs.

Pressure Conversion

Digital

Convert units of digital. Examples of such units are gigabits and bytes.

Digital Conversion

Parts Per

Convert units of parts per. Examples of such units are parts-per-billion and parts-per-quadrillion.

Parts Per Conversion

Voltage

Convert units of voltage. Examples of such units are volts and millivolts.

Voltage Conversion

Current

Convert units of current. Examples of such units are amps and kiloamps.

Current Conversion

Power

Convert units of power. Examples of such units are kilowatts and gigawatts.

Power Conversion

Energy

Convert units of energy. Examples of such units are gigawatt hours and kilojoules.

Energy Conversion

Volume Flow Rate

Convert units of volume flow rate. Examples of such units are fluid ounces per minute and gallons per second.

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are revolutions per minute and radian per second.

Frequency Conversion

Pace

Convert units of pace. Examples of such units are seconds per meter and seconds per foot.

Pace Conversion

Illuminance

Convert units of illuminance. Examples of such units are lux and foot-candles.

Illuminance Conversion

Reactive Power

Convert units of reactive power. Examples of such units are volt-ampere reactive and gvar.

Reactive Power Conversion

Angle

Convert units of angle. Examples of such units are gradians and arcsecond.

Angle Conversion