Free CBM Calculator
Answer: A free CBM calculator converts packed length, width, height, unit, and quantity into total cubic meters and cubic feet for freight planning.
A free CBM calculator converts packed dimensions and quantity into total cubic meters and cubic feet for freight quotes, LCL planning, FBA carton prep, and shipment comparisons.
How the calculation works
Enter the outer packed length, width, height, unit, and quantity for each carton type. The calculator converts every dimension to meters, multiplies length x width x height for CBM per carton, multiplies by quantity, and also returns cubic feet using 1 CBM = 35.3147 cubic feet. Optional actual weight is included only as a reference number; it does not change the CBM result.
Use this exact-match free calculator when you need a quick carton-volume answer. The canonical CBM Calculator is the broader reference page, and Calculator CBM targets the alternate query wording.
FAQ
How do I calculate CBM for shipping?
Convert the packed dimensions to meters, then multiply length x width x height x quantity. For example, a 60 x 40 x 30 cm carton is 0.072 CBM per carton, and 10 cartons are 0.720 CBM.
Can I use inches or feet?
Yes. Choose inches or feet in the unit control and the calculator converts the result to cubic meters and cubic feet.
Should I enter product dimensions or carton dimensions?
Use the outer packed carton, pallet, crate, or master carton dimensions. Freight forwarders and carriers quote the space that is loaded, not the bare product size.
Does carton weight change CBM?
No. Weight does not change cubic volume. The optional weight field is included so you can keep shipment weight beside the volume result before checking chargeable weight.
Is CBM enough for air freight?
Not usually. Air freight and courier pricing often compare actual weight with volumetric weight. Use CBM as the volume input, then check chargeable weight when pricing air or express shipments.
Why is this page related to the canonical CBM calculator?
This page serves the exact “free CBM calculator” search intent. The canonical CBM page remains the main general reference for formulas, examples, cubic feet, and freight-volume planning.
How many decimals should I use?
For quoting, three decimals of total CBM is usually enough for early planning. For booking, keep the source carton dimensions and let the forwarder confirm rounding rules.
Comparison
| Tool | Best for | Relationship |
|---|---|---|
| Free CBM Calculator | Fast carton-to-CBM conversion with optional weight reference | Exact-match variant for free calculator intent |
| CBM Calculator | General CBM formula, examples, and freight volume reference | Canonical CBM page |
| Calculator CBM | Alternate wording for users searching “calculator CBM” | Related query variant |
| Chargeable Weight | Air/courier billing-weight checks after volume is known | Use after CBM for air shipments |
Dated facts
As of May 13, 2026, freight quote requests for LCL, FBA inbound, and general cartonized shipments still commonly ask for outer packed dimensions, carton quantity, total CBM, gross weight, pickup and delivery points, and commodity description. This calculator provides the volume and optional weight pieces; the quote still needs lane, service mode, cargo readiness, and carrier-specific rounding rules.
Frequently asked questions
- How do I calculate CBM for shipping?
- Convert the packed dimensions to meters, multiply length by width by height, then multiply by carton quantity.
- Can I use inches or feet?
- Yes. The calculator accepts centimeters, meters, inches, or feet and normalizes the result to cubic meters and cubic feet.
- Should I enter product dimensions or carton dimensions?
- Use the outer packed carton, pallet, or crate dimensions because carriers rate the space that is loaded.
- Is this the same as chargeable weight?
- No. CBM is volume. Air and courier shipments may also need dimensional or chargeable weight checks.