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

ClustrMaps Opt Out Removal: Remove Personal Data vs Other People-Search Sites

September 26th, 2026
Remove your ClustrMaps listing first if it exposes your home address, phone number, relatives, or property details, then work through the larger people-search sites that keep republishing the same data. ClustrMaps opt out is usually a direct removal request, but it is not a full ... Read more


Unblocked Video Websites for School: YouTube vs School-Approved Video Platforms

September 26th, 2026
Schools should treat YouTube as a useful but risky video library, not as the default unblocked video solution. For daily classroom use, school-approved video platforms are usually safer, cleaner, and easier to manage. YouTube can still work well for current events, tutorials, m... Read more


Best Ad Blocker for Safari: AdGuard vs 1Blocker for Mac and iPhone

September 25th, 2026
AdGuard is the better all-round Safari ad blocker if you want strong filtering on both Mac and iPhone, especially if you also care about DNS protection and blocking trackers outside Safari. 1Blocker is the cleaner choice if you want a polished Apple-first app tha... Read more


How to Use Inspect Element on iPhone: iPhone Web Inspector vs Remote Debugging Alternatives

September 25th, 2026
The fastest reliable way to use Inspect Element on an iPhone is Safari Web Inspector on a Mac, connected to the iPhone by USB or Wi Fi. If you do not have a Mac, use a remote debugging service with real iPhones, or add a temporary in-page console tool such as Eruda or vConsole fo... Read more



Unit Conversion



mm

=

cm

Unit Types

Length

Convert units of length. Examples of such units are centimeters and feet.

Length Conversion

Area

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

Area Conversion

Mass

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

Mass Conversion

Volume

Convert units of volume. Examples of such units are milliliters and quarts.

Volume Conversion

Temperature

Convert units of temperature. Examples of such units are celsius and kelvin.

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 kilometers per hour and feet per second.

Speed Conversion

Pressure

Convert units of pressure. Examples of such units are pascal and pounds per square inch.

Pressure Conversion

Digital

Convert units of digital. Examples of such units are kilobits and megabits.

Digital Conversion

Parts Per

Convert units of parts per. Examples of such units are parts-per-million and parts-per-trillion.

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 milliamps.

Current Conversion

Power

Convert units of power. Examples of such units are watts and megawatts.

Power Conversion

Energy

Convert units of energy. Examples of such units are joules and kilojoules.

Energy Conversion

Volume Flow Rate

Convert units of volume flow rate. Examples of such units are liters per hour and feet cubed per minute.

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are gigahertz and degrees 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 mvar and kvar.

Reactive Power Conversion

Angle

Convert units of angle. Examples of such units are radians and arcminute.

Angle Conversion