Calculate chargeable weight, volumetric ratios, and freight density instantly.
Standard Air Freight (IATA)
Express Courier (DHL/FedEx/UPS)
Custom Factor
Standard IATA divisor: 6000 cm³/kg
Please enter a valid positive number.
Length × Width × HeightDimensions must be positive numbers.
Quantity must be at least 1.
Weight as shown on the scaleWeight must be positive.
CHARGEABLE WEIGHT
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Based on Actual Weight
Total Actual Weight
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Total Volumetric Weight
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Total Volume
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Actual Weight
Volumetric Weight
Metric
Value
What is a Volume Weight Calculator for Air Freight?
A volume weight calculator for air freight (also known as a dimensional weight calculator) is a critical logistics tool used to determine the billable weight of a shipment. In the air cargo industry, space is as valuable as lifting capacity. Therefore, carriers charge based on whichever is greater: the actual gross weight (how heavy it is) or the volumetric weight (how much space it takes up).
This calculation ensures that shippers sending light but bulky items (like foam, pillows, or assembled furniture) pay for the space they occupy in the aircraft. This tool is essential for logistics managers, freight forwarders, ecommerce businesses, and importers/exporters to estimate shipping costs accurately and avoid unexpected charges.
Volume Weight Formula and Mathematical Explanation
The formula for calculating volumetric weight depends on the measurement system (Metric vs. Imperial) and the divisor factor set by the carrier (IATA standard vs. Courier express).
Here is a detailed breakdown of the variables used in the volume weight calculator for air freight:
Variable
Meaning
Unit (Metric)
Unit (Imperial)
L, W, H
Dimensions of the package
Centimeters (cm)
Inches (in)
Divisor
Volumetric Factor
6000 or 5000
166 or 139
Result
Volumetric Weight
Kilograms (kg)
Pounds (lb)
Common Divisors
6000 (Metric) / 166 (Imperial): Standard Air Freight. Used by most airlines for general cargo.
5000 (Metric) / 139 (Imperial): Express Couriers. Used by DHL, FedEx, and UPS for parcel shipments.
Practical Examples (Real-World Use Cases)
Example 1: Shipping Pillows (Bulky Cargo)
An ecommerce store ships 10 cartons of down pillows. Each carton measures 50cm × 50cm × 50cm and weighs only 5kg on the scale. They use a standard airline (Divisor 6000).
Volumetric Weight: 12,000 / 6000 = 2 kg per box. Total = 20 kg.
Chargeable Weight: 150 kg (Because 150 > 20).
Result: The shipper pays for the actual weight of 150 kg.
How to Use This Volume Weight Calculator for Air Freight
Select Measurement System: Choose between Metric (cm/kg) or Imperial (in/lb) depending on your packing list data.
Choose Freight Type: Select "Standard Air Freight" for general cargo or "Express Courier" for services like DHL or FedEx. This automatically sets the correct divisor.
Enter Dimensions: Input the Length, Width, and Height of a single package.
Enter Quantity: Input the total number of identical packages.
Enter Actual Weight: Input the gross weight of a single package as measured on a scale.
Analyze Results: Look at the "Chargeable Weight" highlights. If Volumetric Weight is higher, consider repackaging to reduce empty space.
Key Factors That Affect Air Freight Costs
When using a volume weight calculator for air freight, keep these factors in mind regarding your final shipping costs:
Packing Efficiency: Poorly packed boxes with "dead air" increase volumetric weight without adding value. Vacuum sealing soft goods can significantly reduce costs.
Carrier Divisor Policy: Different carriers use different divisors (e.g., 6000 vs 5000). A divisor of 5000 results in a higher chargeable weight than 6000. Always check your carrier's specific terms.
Palletization: If you ship on pallets, the dimensions of the pallet itself (base and height) are included in the volume calculation, often increasing the chargeable weight.
Stackability: Non-stackable pallets may be charged based on the full height of the aircraft hold, regardless of the actual cargo height, known as a "pivot weight" charge.
Fuel Surcharges: These are calculated based on the Chargeable Weight, not just the Actual Weight. A higher volumetric weight increases your fuel surcharge fees.
Overhang: If items overhang a pallet, carriers calculate volume based on the widest points, dramatically increasing the calculated volume (L × W × H).
Frequently Asked Questions (FAQ)
What is the difference between chargeable weight and volumetric weight?
Volumetric weight is the theoretical weight based on package dimensions. Chargeable weight is the final weight used for billing, which is simply the higher of the two: Actual vs. Volumetric.
Why do express couriers use 5000 instead of 6000?
Express couriers like DHL, FedEx, and UPS generally use a divisor of 5000 (cm³/kg) to account for the premium nature of their speed and space, resulting in a higher chargeable weight compared to standard air freight (6000).
How can I reduce my chargeable weight?
Minimize empty space in your boxes. Use smaller boxes that fit the product tightly, vacuum seal clothing/textiles, and avoid pallet overhangs.
Does this calculator work for sea freight?
No. Sea freight usually uses a ratio of 1 CBM = 1000 kg. This volume weight calculator for air freight uses air-specific ratios (1:6000 or 1:5000).
What if my dimensions are in inches?
Switch the calculator to "Imperial" mode. The standard divisor changes from 6000 to 166 (or 139 for express) to calculate the dimensional weight in pounds.
Is the pallet weight included in the calculation?
Yes, the gross weight and gross dimensions must include the pallet if the goods are palletized.
What is CBM?
CBM stands for Cubic Meter. It is calculated as Length (m) × Width (m) × Height (m). It is the standard unit for volume in international logistics.
How precise does the measurement need to be?
Carriers re-measure automatedly using laser scanners. It is best to round up to the nearest cm or half-inch to ensure your cost estimates are conservative and accurate.