Convert units Freely
Convert kilometers to miles, Celsius to Fahrenheit, and more.
Length
Length measures distance between two points.
Area
Area measures the size of a surface.
Mass
Mass measures how much matter an object contains.
Volume
Volume measures the space an object or substance occupies.
Count
Count measures quantity of individual items.
Temperature
Temperature indicates how hot or cold something is.
Time
Time measures duration of events and intervals.
Digital
Digital units quantify data size and transfer.
Parts per
Parts-per units express very small concentrations.
Speed
Speed measures how fast something moves.
Pace
Pace shows time needed per unit of distance.
Pressure
Pressure measures force applied over an area.
Current
Current measures flow of electric charge.
Voltage
Voltage measures electric potential difference.
Power
Power measures rate of using or transferring energy.
Reactive Power
Reactive power supports electric and magnetic fields in AC systems.
Apparent Power
Apparent power combines real and reactive power in AC circuits.
Energy
Energy is the capacity to do work.
Reactive Energy
Reactive energy relates to sustaining fields in AC systems.
Volumetric Flow Rate
Volumetric flow rate measures volume passing per unit time.
Illuminance
Illuminance measures light falling on a surface.
Frequency
Frequency measures how often a periodic event repeats.
Angle
Angle measures rotation or separation between lines.