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

Fractional CTO Hourly Rates: What Businesses Should Expect to Pay

June 18th, 2026
Hiring a senior tech leader can feel like buying a mystery box. You need wisdom, speed, and calm. But you may not need a full-time CTO with a full-time salary. That is where a fractional CTO comes in. TLDR: A fractional CTO usually costs between $... Read more


PlanGrid vs Bluebeam: Construction Software Comparison

June 18th, 2026
Choosing construction software is rarely about finding the best tool in a vacuum. It is about finding the platform that fits how your team reviews drawings, tracks issues, manages revisions, coordinates field work, and communicates across the project lifecycle. PlanGrid and Bluebeam... Read more


Best White Label AI Website Builders for Agencies in 2026

June 17th, 2026
Agencies evaluating white label AI website builders in 2026 should look beyond flashy page generation demos. The best platforms are not simply the ones that can create a homepage from a prompt; they are the ones that let an agency deliver reliable client websites under its own br... Read more


Auction Clerking Software Free Options

June 17th, 2026
Running an auction can feel like juggling chickens in a windstorm. Bidders wave. Numbers fly. Items move fast. Money must be counted. Receipts must be right. This is where auction clerking software can save the day. TLDR: Free auction clerking software op... 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 inches squared and acres.

Area Conversion

Mass

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

Mass Conversion

Volume

Convert units of volume. Examples of such units are millimeters cubed and kilometers 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 minutes and weeks.

Time Conversion

Speed

Convert units of speed. Examples of such units are miles per hour 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 bits and bytes.

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 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 kilowatts and gigawatts.

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 liters per second and feet cubed per hour.

Volume Flow Rate Conversion

Frequency

Convert units of frequency. Examples of such units are degrees per second 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