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

Base44 Discount Code: Base44 vs Lovable for AI App Builder Plans and Pricing

September 28th, 2026
If you want the quick pick, choose Base44 if you care most about a simple app path, and choose Lovable if you want more control over code and design. A Base44 discount code is nice if you find one, but do not build your whole budget around it. These AI app builders change pricing... Read more


How to Block Text Messages: iPhone vs Android Message Blocking

September 27th, 2026
The fastest way to block text messages is to open the unwanted conversation, tap the senders details, and choose the block option. On iPhone, that usually means using Messages and the contact info screen. On Android, it depends on the messaging app, but most people use ... Read more


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



Unit Conversion



mm

=

cm

Unit Types

Length

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

Length Conversion

Area

Convert units of area. Examples of such units are hectare and square miles.

Area Conversion

Mass

Convert units of mass. Examples of such units are milligrams and tonne.

Mass Conversion

Volume

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

Volume Conversion

Temperature

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

Temperature Conversion

Time

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

Time Conversion

Speed

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

Speed Conversion

Pressure

Convert units of pressure. Examples of such units are bars and kilopound per square inch.

Pressure Conversion

Digital

Convert units of digital. Examples of such units are terabits and kilobytes.

Digital Conversion

Parts Per

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

Parts Per Conversion

Voltage

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

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 megawatts and gigawatts.

Power Conversion

Energy

Convert units of energy. Examples of such units are kilowatt hours and joules.

Energy Conversion

Volume Flow Rate

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

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are hertz and terahertz.

Frequency Conversion

Pace

Convert units of pace. Examples of such units are minutes per kilometer 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 degrees and gradians.

Angle Conversion