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

Moving a WordPress Website to a VPS: Cloudways vs RunCloud vs Ploi for Easier Server Management

October 28th, 2026
For most WordPress owners moving to a VPS, Cloudways is the easiest choice, RunCloud is the best middle ground, and Ploi is the cleanest pick for developers. That matters because WordPress powers about 43% of all websites tracked by W3Techs [source: ... Read more


Best Alternatives to Windows 11 Virtual Machines: Comparing VirtualBox, VMware Workstation, and QEMU

October 28th, 2026
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Pick Termly if you want fast policy setup, iubenda if you sell across borders, and Usercentrics if consent UX is your main headache. That is the short version. Website policies are not just boring legal wallpaper. They affect trust, ad tracking, analytics, cookie banners, and how... Read more


Best Alternatives to Free Fax Services: Comparing Fax.Plus, GotFreeFax, and FaxZero for Online Document Sending

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Fax.Plus is the best pick for regular online faxing. GotFreeFax is great for quick one-off faxes. FaxZero is fine when you need a free fax in a hurry and can live with ads. FaxZero says its free option allows 5 free faxes per day, with up to 3 pages plus ... Read more



Unit Conversion



mm

=

cm

Unit Types

Length

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

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 ounces.

Mass Conversion

Volume

Convert units of volume. Examples of such units are inches cubed 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 minutes and days.

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 bars and pounds per square inch.

Pressure Conversion

Digital

Convert units of digital. Examples of such units are gigabytes and terabytes.

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 kilovolts.

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 kilowatts.

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 centimeters cubed per second and inches cubed per minute.

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are kilohertz 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 mvar and gvar.

Reactive Power Conversion

Angle

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

Angle Conversion