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Gram per cubic meter (g/m³)

One gram per cubic meter, exactly 0.001 kg/m³. Used for gas densities and humidity.

What is a gram per cubic meter?

Symbol
g/m³
Quantity
Density
Unit system
metric
Definition
One gram per cubic meter, exactly 0.001 kg/m³. Used for gas densities and humidity.
Exact
Yes, the value is exact by definition
Source
SI Brochure, 9th edition (BIPM, 2019)

Common applications

Used for absolute humidity, gas concentrations and very low densities.

Gram per cubic meter in other density units

Gram per cubic meter quick reference

Gram per cubic meter in other units
Gram per cubic meterKilogram per cubic meterGram per cubic centimeterPound per cubic foot
1 g/m³= 0.001 kg/m³= 0.000001 g/cm³≈ 0.00006242796058 lb/ft³
10 g/m³= 0.01 kg/m³= 0.00001 g/cm³≈ 0.0006242796058 lb/ft³
100 g/m³= 0.1 kg/m³= 0.0001 g/cm³≈ 0.006242796058 lb/ft³
1000 g/m³= 1 kg/m³= 0.001 g/cm³≈ 0.06242796058 lb/ft³

Where the gram per cubic meter fits

The next larger density unit is the kilogram per cubic meter (kg/m³). 1 g/m³ = 0.001 kg/m³, and 1 kg/m³ = 1000 g/m³.

Frequently asked questions

How many kilograms per cubic meter are in one gram per cubic meter?
One gram per cubic meter = 0.001 kg/m³ (kilograms per cubic meter).
How many grams per cubic centimeter are in one gram per cubic meter?
One gram per cubic meter = 0.000001 g/cm³ (grams per cubic centimeter).
How many pounds per cubic foot are in one gram per cubic meter?
One gram per cubic meter ≈ 0.00006242796058 lb/ft³ (pounds per cubic foot).