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CBM Calculator for Shipping
EstimateEnter multi-carton dimensions to get total CBM, density, and a quick 20/40 container estimate.
- 1. Enter or paste cartons
- 2. Read CBM & suggested container
- 3. Copy / packing list
| # | L (cm) | W (cm) | H (cm) | Qty | Wt/kg | Line CBM | |
|---|---|---|---|---|---|---|---|
| 1 | 9.6000 |
About 1× 20GP at ~40.3% fill (estimate, 85% usable).
Total CBM
9.6000
Total weight
1200 kg
Density
125 kg/CBM
Container estimate
Assumes 85% usable volume
| Type | Qty | Util. |
|---|---|---|
| 20GPsuggested | 1 | 40.3% |
| 40GP | 1 | 19.5% |
| 40HC | 1 | 16.6% |
| 45HC | 1 | 14.5% |
How to hand-check this number
For each line in cm: L×W×H×Qty ÷ 1,000,000 = line CBM. Sum all lines. Sample 60×40×40×100 = 9.6 CBM. Container qty ≈ ceil(total CBM ÷ (internal × 0.85)).
⚠ Estimates only. Not a loading plan. Carriers may differ.
9.6000 CBM
About 1× 20GP at ~40.3% fill (estimate, 85% usable).
How it works
For each carton line (cm): L × W × H × Qty ÷ 1,000,000. Total CBM is the sum of all lines. Container qty uses max(volume need, weight need) with 85% usable volume (planning voids — not a load plan).
Tips: paste Excel rows via Paste, copy a summary for WhatsApp, or open a Share link with the same cartons.
Worked example
Sample: 60×40×40 cm × 100 cartons @ 12 kg = 9.6 CBM, 1,200 kg, density 125 kg/CBM. Use Load sample to try it.
FAQ
How do you calculate CBM for shipping?+
In centimeters: CBM = Length × Width × Height × Quantity ÷ 1,000,000. Sum each carton line for total CBM.
Is CBM the same as volumetric weight?+
No. CBM is volume in cubic meters. Volumetric weight converts volume into a chargeable kg figure using a carrier divisor.
How many CBM fit in a 20ft container?+
A 20GP is typically about 28 CBM internal volume. We assume 85% usable (~23.8 CBM) for planning estimates.
Why is my container estimate not exact?+
Real loads depend on carton stacking, weight limits, equipment, and packing efficiency. This tool is not a 3D loading plan.
Related tools
Results are estimates for planning only. Container capacities, payload limits, and dimensional weight divisors vary by carrier. Document outputs are templates only — not legal or customs advice.