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

Insurance Image Annotation: Best Practices for AI Claims Automation

August 1st, 2026
Artificial intelligence is changing how insurers manage claims, but its performance depends heavily on the quality of the visual data used to train it. In claims automation, insurance image annotation turns photos of damaged vehicles, homes, commercial property, medical documents... Read more


Medical Image Annotation Services: 7 Leading Providers for AI Healthcare Projects

August 1st, 2026
Medical AI is a bit like teaching a robot to become a careful doctors assistant. It needs examples. Lots of them. That is where medical image annotation services come in. These teams label X-rays, CT scans, MRIs, ultrasound images, pathology slides, and more, so AI models can le... Read more


MagicHour AI Review: Features, AI Video Generation, and Alternatives

July 31st, 2026
MagicHour AI sits in the growing category of creative AI tools designed to turn ideas, images, and existing clips into short-form video content. It is aimed at marketers, creators, social media teams, and small businesses that need visually engaging videos without hiring a full production crew. R... Read more


Custom Biometric Software Development: Build Secure Identity Verification Systems

July 31st, 2026
Custom biometric software development has become a strategic priority for organizations that need fast, secure, and convenient identity verification. Instead of relying only on passwords, PINs, or physical documents, modern systems can verify a person through unique biological or behavior... Read more



Unit Conversion



mm

=

cm

Unit Types

Length

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

Length Conversion

Area

Convert units of area. Examples of such units are millimeters squared and square feet.

Area Conversion

Mass

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

Mass Conversion

Volume

Convert units of volume. Examples of such units are centimeters cubed and pints.

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 nanoseconds 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 hectopascals and kilopound per square inch.

Pressure Conversion

Digital

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

Digital Conversion

Parts Per

Convert units of parts per. Examples of such units are parts-per-trillion 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 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 kilowatt hours and gigawatt hours.

Energy Conversion

Volume Flow Rate

Convert units of volume flow rate. Examples of such units are centimeters cubed per second and teaspoons per second.

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are megahertz and gigahertz.

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 degrees and arcsecond.

Angle Conversion