Density of Air at Sea Level (1.225 kg/m³)
Air at sea level has a density of approximately 1.225 kg/m³; 1 m³ of air weighs about 1.225 kg.
How to use this tool
- Enter mass, volume and density (if known) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your density and the full breakdown beneath it.
Confirm the standard air density at sea level by computing 1.225 kg in 1 cubic metre.
Frequently asked questions
- What is the density of common materials?
- Water: 1000 kg/m³, aluminium: ~2700, steel: ~7800–8000, gold: ~19,300, air: ~1.2 kg/m³ at sea level.
- How do I convert g/cm³ to kg/m³?
- Multiply by 1000. So 2.7 g/cm³ (aluminium) = 2700 kg/m³.