Interactive Freight Utility

CBM (Cubic Meter) Calculator

CBM (cubic meters) is calculated by multiplying package Length × Width × Height (in meters) by total quantity. In international logistics, chargeable weight equals the greater of actual gross weight and volumetric dimensional weight. Standard volumetric ratios apply: Road freight uses 1:3000 (1 CBM = 333 kg), Air cargo uses 1:6000 (1 CBM = 167 kg), and Ocean LCL applies the W/M rule (1 CBM = 1,000 kg).

Updated October 2026 · Brosan Lojistik operations team

Quick Answer: How to Convert CBM to KG in International Freight?

The conversion from CBM (cubic meters) to chargeable kilograms depends strictly on the transport mode's volumetric factor: For European Road Freight (1:3000 ratio), 1 CBM = 333.33 kg (3 CBM = 1,000 kg / 1 Metric Ton). For International Air Cargo (IATA 1:6000 standard), 1 CBM = 166.67 kg (6 CBM = 1,000 kg). For Ocean LCL Groupage (1:1000 W/M rule), 1 CBM = 1,000 kg (1 Revenue Ton). Express courier (1:5000 ratio) equates 1 CBM to 200 kg.

European Road Freight (1:3000)
1 CBM = 333.33 kg
3 CBM = 1,000 kg (1 Ton) | 1 LDM = 1,750–1,850 kg
Air Cargo (IATA 1:6000)
1 CBM = 166.67 kg
6 CBM = 1,000 kg (1 Ton) | Volumetric Chargeable Weight
Ocean LCL Groupage (1:1000 W/M)
1 CBM = 1,000 kg (1 Ton)
1 CBM = 1 Revenue Ton (W/M Rule)
CBM to KG Volumetric Chargeable Weight Conversion Lookup Matrix (0.5 to 10 CBM)
Volume (CBM / m³)Road (1:3000)Air Cargo (1:6000)Ocean LCL (1:1000)Express Courier (1:5000)
0.5 CBM (m³)167 kg83 kg500 kg100 kg
1.0 CBM (m³)333 kg167 kg1,000 kg (1 Ton)200 kg
2.0 CBM (m³)667 kg333 kg2,000 kg (2 Ton)400 kg
3.0 CBM (m³) — 1 Road Ton Benchmark1,000 kg (1 Ton)500 kg3,000 kg (3 Ton)600 kg
5.0 CBM (m³)1,667 kg833 kg5,000 kg (5 Ton)1,000 kg
10.0 CBM (m³)3,333 kg1,667 kg10,000 kg (10 Ton)2,000 kg
Cargo Packaging Items
Unit System:
Quick Presets:
2 Line Items
1
Volume: 1.920 m³ · 300 kg
2
Volume: 2.688 m³ · 700 kg

Shipment Metrics & Chargeable Weight

1:3000 (333 kg/m³)
Total Volume
4.608m³ (CBM)≈ 162.7 ft³
Actual Gross Weight
1,000 kg
2,205 lbs
Volumetric Weight
1,536 kg
1:3000 (333 kg/m³)
Chargeable WeightBilled by Volumetric Weight (Light / Bulky)
1,536kg(3,386 lbs)
Euro Pallet Equivalence≈ 3.1 Pallets
13.6m Mega Trailer Equivalence≈ 4.6% of 100 m³
Get quote with these dimensions

Cross-Modal Chargeable Comparison

Comparison of chargeable billing weight across international transport modes:

Modal Comparison
Road Freight1:3000 (333 kg/m³)
1,536 kg
Volumetric Weight: 1,536 kg
Air Cargo1:6000 (167 kg/m³)
1,000 kg
Volumetric Weight: 768 kg
Ocean LCL1:1000 (W/M 1 CBM = 1 Ton)
4.61 RT (W/M)
4,608 kg equivalent
Express Courier1:5000 (200 kg/m³)
1,000 kg
Volumetric Weight: 922 kg

Mathematical Formulas & Cargo Measurement Standards

Logistics engineers, customs brokers, and shippers calculate cargo space and freight costs using standardized mathematical formulas. Here is how CBM and dimensional weights are derived:

1. Cubic Meter (CBM) Formulas

To calculate volume from centimeter dimensions:

CBM = (Length(cm) × Width(cm) × Height(cm)) / 1,000,000 × Quantity

For imperial measurements in inches:

CBM = (Length(in) × Width(in) × Height(in)) / 61,023.74 × Quantity
1 Cubic Meter (m³) = 35.3147 Cubic Feet (ft³ / CFT).
2. Chargeable Weight Formulas by Mode
  • Air Cargo (1:6000):CBM × 166.67 kg
  • Road Freight (1:3000):CBM × 333.33 kg
  • Ocean LCL (W/M):Max(CBM, Ton)
  • Express Courier (1:5000):CBM × 200.00 kg
3. CBM to Revenue Ton & How to Calculate Freight Ton Guide

CBM to Revenue Ton (W/M Rule)

In ocean LCL and breakbulk cargo, carriers quote freight per Revenue Ton (RT / W/M). 1 Revenue Ton equals either 1 CBM (1 cubic meter) or 1 Metric Ton (1,000 kg), whichever produces the higher charge: Revenue Ton = Max(CBM, Gross Weight in MT).

How to Calculate Freight Ton

To calculate freight ton: 1) Measure the cargo volume in cubic meters (CBM). 2) Divide actual gross weight in kg by 1,000 to get metric tons. 3) Compare volume and weight: Chargeable Freight Ton = Max(Total CBM, Metric Tons).

3 CBM to KG: How Much Does 3 CBM Weigh in KG?

For 3 CBM to kg: In European Road Freight (1:3000), 3 CBM = exactly 1,000 kg (1 Metric Ton); in Air Cargo (1:6000), 3 CBM = 500 kg volumetric weight; in Ocean LCL (1:1000 W/M), 3 CBM = 3,000 kg volumetric equivalent (3 Revenue Tons); in Express Courier (1:5000), 3 CBM = 600 kg.

Worked Shipment Calculation Example

Worked comparison for 20 export cartons (60 × 40 × 40 cm @ 15 kg gross per box) across international transport modes:

Transport ModeVolume (CBM)Actual Gross WtVolumetric WtChargeable WeightBilling Basis
Road Freight (1:3000)0.96 m³300 kg320 kg (0.96 × 333)320 kgVolumetric Driven
Air Cargo (1:6000)0.96 m³300 kg160 kg (0.96 × 167)300 kgGross Weight Driven
Ocean LCL (1:1000 W/M)0.96 m³0.30 Ton (300 kg)0.96 RT1.00 RT (Min. 1 CBM)Volume (W/M Rule)

Standard Equipment Volumes & Pallet Capacities

Reference guide for comparing your calculated shipment volume against standard ocean containers and European road trailers:

20' Standard Dry~33 CBM
  • • Euro Pallets: 11 Pallets
  • • Internal: 5.90 × 2.35 × 2.39 m
  • • Max Payload: 28,280 kg
40' Standard Dry~67 CBM
  • • Euro Pallets: 25 Pallets
  • • Internal: 12.03 × 2.35 × 2.39 m
  • • Max Payload: 26,730 kg
40' High Cube (HC)~76 CBM
  • • Euro Pallets: 25 Pallets
  • • Internal: 12.03 × 2.35 × 2.69 m
  • • Max Payload: 28,600 kg
13.6m Mega Trailer~100 m³
  • • Euro Pallets: 33 Pallets
  • • Internal: 13.62 × 2.48 × 3.00 m
  • • Max Payload: 24,000 kg

Frequently Asked Questions

What is CBM in international shipping and freight forwarding?▾
CBM stands for Cubic Meter (m³). It is the standard metric measurement of cargo volume calculated by multiplying Length × Width × Height (in meters). For dimensions measured in centimeters, divide the product by 1,000,000. In international logistics, freight forwarders use CBM to determine container stuffing space, truckloading meters, and volumetric shipping charges.
Why is the chargeable weight different from the actual gross weight?▾
Carriers operate aircraft, trucks, and vessels with strict limits on both physical payload (weight) and cubic cargo hold capacity (volume). If a shipment is light but voluminous—such as cotton apparel, pillows, or styrofoam packaging—it takes up space that could otherwise carry dense cargo. Carriers therefore charge based on whichever is greater: Actual Gross Weight or Volumetric (Dimensional) Weight.
What is the volumetric weight ratio for Air Cargo?▾
The standard IATA air freight volumetric ratio is 1:6000, meaning 1 cubic meter (1 CBM) equals 166.67 kilograms. The calculation formula is: (Length in cm × Width in cm × Height in cm) / 6,000. If your cargo volume is 3 CBM, its volumetric weight is 500 kg. If actual weight is only 200 kg, you will be invoiced for 500 kg.
What is the volumetric ratio for European Road Freight (FTL/LTL)?▾
Standard Pan-European road transport applies a 1:3000 volumetric ratio (1 CBM = 333.33 kg), calculated as: (Length × Width × Height in cm) / 3,000. Additionally, for non-stackable palletized cargo that occupies dedicated floor space, carriers apply the Loading Meter (LDM) rule where 1 Euro pallet (1.2m × 0.8m) equals 0.40 LDM, corresponding to a minimum billing benchmark of 700 kg.
How does the W/M (Weight or Measure) rule work in Ocean LCL?▾
Less than Container Load (LCL) maritime consolidations bill on a 'Weight or Measure' (W/M) basis, also known as a Revenue Ton or Freight Ton. The rule equates 1 CBM to 1,000 kg (1 metric ton). If a shipment measures 4 CBM and weighs 2,500 kg (2.5 tons), the chargeable revenue ton is 4 RT because volume exceeds weight in tons.

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