Length
- Distance between two points
- Unit: meter (m), foot (ft), inch (in), centimeter (cm), millimeter (mm)
Area
- Measure of surface size
- Unit: square meter (m²), square foot (ft²), square inch (in²), acre, hectare
Volume
- Amount of space occupied
- Unit: cubic meter (m³), cubic foot (ft³), cubic inch (in³), liter (L), gallon (gal)
Mass
- Amount of matter
- Unit: kilogram (kg), pound (lb), ton, gram (g), ounce (oz)
Density
- Mass per unit volume
- Unit: kilograms per cubic meter (kg/m³), pounds per cubic foot (lb/ft³)
Force
- Push or pull exerted
- Unit: newton (N), pound-force (lbf), kilogram-force (kgf)
Pressure
- Force per unit area
- Unit: pascals (Pa), pounds per square inch (psi), atmospheres (atm)
Temperature
- Measure of heat
- Unit: Celsius (°C), Fahrenheit (°F), Kelvin (K)
Energy
- Capacity to do work
- Unit: joule (J), British Thermal Unit (BTU), kilowatt-hour (kWh)
Other quantities
- Angle: measure of rotation (degrees, radians)
- Time: duration (seconds, minutes, hours)
- Speed: rate of movement (meters per second, feet per second)
- Acceleration: rate of change (meters per second squar
Length
- Meter (m)
- Foot (ft)
- Inch (in)
- Centimeter (cm)
- Millimeter (mm)
Area
- Square meter (m²)
- Square foot (ft²)
- Square inch (in²)
- Acre
- Hectare
Volume
- Cubic meter (m³)
- Cubic foot (ft³)
- Cubic inch (in³)
- Liter (L)
- Gallon (gal)
Mass
- Kilogram (kg)
- Pound (lb)
- Ton
- Gram (g)
- Ounce (oz)
Density
- Kilograms per cubic meter (kg/m³)
- Pounds per cubic foot (lb/ft³)
Force
- Newton (N)
- Pound-force (lbf)
- Kilogram-force (kgf)
Pressure
- Pascals (Pa)
- Pounds per square inch (psi)
- Atmospheres (atm)
Temperature
- Celsius (°C)
- Fahrenheit (°F)
- Kelvin (K)
Energy
- Joule (J)
- British Thermal Unit (BTU)
- Kilowatt-hour (kWh)
Other quantities
- Angle (degrees, radians)
- Time (seconds, minutes, hours)
- Speed (meters per second, feet per second)
- Acceleration (meters per second squared)
- Sound level (decibels, dB)
