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

Optimize WordPress Database: WP-Optimize vs Advanced Database Cleaner for Improving Database Performance

October 9th, 2026
Pick WP-Optimize if you want quick, safe database cleanup with caching extras; pick Advanced Database Cleaner if you need deeper control over orphaned data, scheduled cleanups, and database bloat from old plugins. For most WordPress site owners, WP-Optimize is the easier first ch... Read more


Gateway Network: Gateway vs Router for Understanding Network Connectivity

October 8th, 2026
A gateway connects one network to another, while a router decides where packets should go next. In many homes and small offices, the same box does both jobs, which is why the terms get mixed up. For clear troubleshooting, security planning, and network design, treat them as relat... Read more


Network Performance: Datadog vs New Relic for Monitoring Application Performance

October 8th, 2026
Choose Datadog if network visibility is your main pain, and choose New Relic if application troubleshooting and developer speed matter more. Both platforms monitor application performance well, but they approach the problem from different angles. Datadog is stronger when you need... Read more


What Is IP Settings? Windows vs macOS for Network Configuration

October 7th, 2026
IP settings define how a device identifies itself and reaches other devices on a network. They control the devices IP address, subnet mask, gateway, and DNS servers. On Windows and macOS, the goal is the same, b... Read more



Unit Conversion



mm

=

cm

Unit Types

Length

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

Length Conversion

Area

Convert units of area. Examples of such units are inches squared and square miles.

Area Conversion

Mass

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

Mass Conversion

Volume

Convert units of volume. Examples of such units are cups and feet cubed.

Volume Conversion

Temperature

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

Temperature Conversion

Time

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

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 torrs and kilopound 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-million and parts-per-trillion.

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 milliamps and kiloamps.

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 gigawatt hours and joules.

Energy Conversion

Volume Flow Rate

Convert units of volume flow rate. Examples of such units are inches cubed per hour and fluid ounces per hour.

Volume Flow Rate Conversion

Frequency

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

Frequency Conversion

Pace

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

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 arcsecond.

Angle Conversion