CBM Calculator (Feet)
Enter your box dimensions in feet to get the CBM (cubic meters) and cubic feet of your carton.
CBM from feet
Feet suit crates, pallets and oversized cartons that are easier to measure in whole feet than in inches. Multiplying the sides gives you cubic feet directly, and a single factor then converts that into CBM for ocean and air paperwork.
How it works
Multiply the three sides in feet to get cubic feet, then convert to cubic meters. One cubic meter equals 35.3147 cubic feet, so:
CBM = (L × W × H in feet) ÷ 35.3147
Equivalently, multiply cubic feet by 0.0283168, the two factors are reciprocals and give the same answer.
Worked example
Using the page defaults, a crate 4 × 3 × 2 ft:
- Cubic feet:
4 × 3 × 2 = 24 ft³ - CBM:
24 ÷ 35.3147 = 0.6796 CBM - Or via the multiplier:
24 × 0.0283168 = 0.6796 CBM
So this crate is 0.6796 CBM, roughly 0.68 CBM. Five identical crates total 3.40 CBM. If a side falls between whole feet, measure in inches and divide by 12 (for example 30 in = 2.5 ft) rather than rounding to the nearest foot, which would distort the volume noticeably at this scale.
Feet-to-CBM reference
| Box (ft) | Cubic ft | CBM |
|---|---|---|
| 1 × 1 × 1 | 1 | 0.0283 |
| 2 × 2 × 2 | 8 | 0.2265 |
| 4 × 3 × 2 | 24 | 0.6796 |
| 4 × 4 × 4 | 64 | 1.8123 |
For smaller cartons measured in inches, the CBM calculator in inches avoids the fractional-foot step. If you already have a cubic-feet total and only need the unit swap, the cubic feet to CBM converter does just that. To input metric dimensions, see the CBM calculator in meters or the main CBM calculator.