Formula and method
Worked example
1 m³ × 35.314666721 = 35.3147 ft³.
Assumptions and limits
- 1 ft³ = 0.028316846592 m³ exactly; the US liquid gallon is 231 in³, not the imperial gallon.
- Results show up to 4 decimals; Copy and CSV keep more digits.
Frequently asked questions
How many ft³ are in 1 m³?
1 m³ = 35.314666721 ft³. The factor follows from the SI definitions: 1 ft = 0.3048 m, so 1 ft³ = 0.028316846592 m³.
How do I convert ft³ back to m³?
Multiply by 0.028316847 (or divide by 35.314666721), or simply switch “From unit” to ft³. For example 10 ft³ = 0.2832 m³.
How many cubic feet are in a 20 ft or 40 ft container?
From ISO internal dimensions, a 20GP holds about 33 m³ ≈ 1,165 ft³, a 40GP about 67 m³ ≈ 2,366 ft³ and a 40HC about 76 m³ ≈ 2,684 ft³; usable load is typically 80–90% of that. Exact figures per box type are on the container dimensions chart.