How to Calculate CFT Weight
Professional Volumetric & Chargeable Weight Calculator for Logistics
CFT & Volumetric Weight Calculator
Enter your shipment dimensions to calculate CFT, CBM, and Chargeable Weight.
Inches (in)
Centimeters (cm)
Feet (ft)
Select the unit used for measuring dimensions.
Please enter a valid length.
Please enter a valid width.
Please enter a valid height.
Total number of identical pieces.
The physical weight as shown on a scale.
Air Freight (Standard – 6000)
Courier / Express (5000)
Sea Freight / Road (Density Based)
Determines how volume is converted to weight.
Chargeable Weight (Total)
0.00 kg
Based on the higher of Actual vs. Volumetric Weight
Total Volume (CFT)
0.00 ft³
Total Volume (CBM)
0.00 m³
Volumetric Weight
0.00 kg
Total Actual Weight
0.00 kg
| Metric | Value | Unit |
|---|---|---|
| Total Volume | 0.00 | CFT |
| Volumetric Weight | 0.00 | kg |
| Actual Weight | 0.00 | kg |
| Billable Weight | 0.00 | kg |
What is CFT Weight?
In the world of logistics and freight forwarding, "CFT Weight" is a common industry term that refers to the Volumetric Weight (or Dimensional Weight) derived from the Cubic Feet (CFT) of a shipment. Learning how to calculate cft weight is crucial for importers, exporters, and warehouse managers because freight carriers charge based on whichever is greater: the actual physical weight or the volumetric weight.
Simply put, if you ship a large box of cotton (light but bulky), you will be charged for the space it occupies rather than its physical weight. Conversely, if you ship a small box of steel (heavy but compact), you will be charged for the physical weight. The "CFT Weight" calculation bridges the gap between volume and mass to ensure fair pricing for carriers.
Key Concept: CFT stands for Cubic Feet. One Cubic Foot is a volume of space measuring 1 foot long by 1 foot wide by 1 foot high.
How to Calculate CFT Weight: Formula and Explanation
The process of how to calculate cft weight involves two main steps: first calculating the volume in Cubic Feet (CFT), and then converting that volume into a weight equivalent (Volumetric Weight) using a specific divisor or density factor.
Step 1: Calculate Volume (CFT)
The basic formula for Cubic Feet depends on your measurement unit:
- If measuring in Inches:
$CFT = \frac{Length \times Width \times Height}{1728}$ - If measuring in Centimeters:
$CFT = \frac{Length \times Width \times Height}{28316.8}$
Step 2: Convert CFT to Weight
Once you have the CFT, you convert it to weight. The formula varies by transport mode:
| Transport Mode | Formula (from CFT) | Standard Divisor (Metric) |
|---|---|---|
| Air Freight | $CFT \times 4.72$ kg | 6000 cc/kg |
| Courier (Express) | $CFT \times 5.66$ kg | 5000 cc/kg |
| Sea Freight (LCL) | $CFT \times 28.32$ kg (approx) | 1000 kg/CBM |
Practical Examples of How to Calculate CFT Weight
Example 1: Air Freight Shipment
Imagine you are shipping 10 boxes via Air Freight. Each box measures 24 inches x 18 inches x 12 inches. The actual weight of each box is 15 kg.
- Calculate Volume per box (in³): $24 \times 18 \times 12 = 5,184$ cubic inches.
- Convert to CFT: $5,184 / 1728 = 3$ CFT per box.
- Total CFT: $3 \text{ CFT} \times 10 \text{ boxes} = 30$ CFT.
- Calculate Volumetric Weight: Using the standard air factor (1 CFT ≈ 4.72 kg), $30 \times 4.72 = 141.6$ kg.
- Compare with Actual Weight: $15 \text{ kg} \times 10 = 150$ kg.
Result: Since the Actual Weight (150 kg) is higher than the Volumetric Weight (141.6 kg), the airline will charge for 150 kg.
Example 2: Light Cargo (Courier)
You are sending a large lightweight display stand via DHL/FedEx. Dimensions: 40″ x 40″ x 20″. Actual weight: 20 kg.
- Volume: $40 \times 40 \times 20 = 32,000$ cubic inches.
- CFT: $32,000 / 1728 = 18.51$ CFT.
- Volumetric Weight (Courier uses 5000 divisor): Formula is often $(L \times W \times H \text{ in cm}) / 5000$.
In inches, this is roughly $CFT \times 5.66$.
$18.51 \times 5.66 \approx 104.7$ kg.
Result: The Volumetric Weight (104.7 kg) is much higher than the Actual Weight (20 kg). You will be charged for 104.7 kg. This is why knowing how to calculate cft weight is vital for cost estimation.
How to Use This CFT Weight Calculator
Our tool simplifies the math. Follow these steps to get an instant result:
- Select Unit: Choose whether you measured your cargo in inches, centimeters, or feet.
- Enter Dimensions: Input the Length, Width, and Height of a single package.
- Enter Quantity: If you have multiple identical boxes, enter the count.
- Input Actual Weight: Enter the physical weight of one package (optional, but recommended for comparison).
- Select Freight Mode: Choose "Air Freight" (standard), "Courier" (more expensive/dense), or "Sea Freight".
- Analyze Results: Look at the "Chargeable Weight" highlighted in blue. This is the weight you will likely be billed for.
Key Factors That Affect CFT Weight Results
When learning how to calculate cft weight, consider these financial and physical factors:
- Divisor Factor: The most critical variable. Air cargo typically uses 6000, while express couriers use 5000. A lower divisor results in a higher chargeable weight, increasing your costs.
- Palletization: If your boxes are placed on a pallet, the dimensions of the pallet itself usually become the chargeable dimensions. Always measure the total footprint including the pallet.
- Bulging Boxes: If a cardboard box bulges due to overpacking, carriers will measure the widest point. This increases the CFT and the chargeable weight.
- Measurement Rounding: Carriers often round up to the nearest centimeter or half-inch. A 10.2cm box might be calculated as 11cm, slightly increasing the cost.
- Stackability: In sea freight (LCL), if your cargo cannot be stacked (non-stackable), you might be charged for the vertical volume up to the container ceiling, drastically increasing your CFT weight.
- Unit Conversion Errors: Confusing inches with centimeters is the most common mistake. Always double-check your measurement units before calculating.
Frequently Asked Questions (FAQ)
What is the difference between CFT and CBM?
CFT stands for Cubic Feet, while CBM stands for Cubic Meters. They both measure volume. 1 CBM is approximately equal to 35.315 CFT. The calculator above provides both values automatically.
Why is my chargeable weight higher than my actual weight?
This happens when your cargo is low-density (light but bulky). Carriers charge for the space occupied. To reduce this, try to pack items more compactly or use smaller boxes.
How do I calculate CFT for a cylinder or roll?
Carriers treat cylinders as rectangular prisms. They measure the diameter as both the width and height. So, calculate as: $Length \times Diameter \times Diameter$.
Does sea freight use CFT weight?
Yes, but usually for LCL (Less than Container Load). The standard is 1 CBM = 1000 kg. If your cargo is denser than this, you pay by weight; if lighter, you pay by volume (CBM/CFT).
What is the formula for CFT in inches?
The formula is $(Length \times Width \times Height) / 1728$. The number 1728 comes from $12 \times 12 \times 12$ (inches in a foot).
Is the divisor always 6000 for air freight?
Mostly yes, but some carriers or special trade lanes may use 5000 or even 7000. Always check your quote or contract for the specific "volumetric divisor."
How to calculate cft weight for sand or steel?
For construction materials, "CFT weight" refers to density. You multiply the CFT volume by the material's density (e.g., Steel ≈ 490 lbs/CFT). This calculator focuses on shipping volume.
Can I reduce my CFT weight?
Yes. Optimize packaging to eliminate empty space, use vacuum sealing for clothes, or disassemble furniture to reduce the overall dimensions.
Related Tools and Resources
- Freight Cost Calculator – Estimate total shipping costs based on weight and destination.
- CBM Calculator – A dedicated tool for Cubic Meter calculations for sea freight.
- Complete Shipping & Logistics Guide – Learn the terminology of international trade.
- Current Air Cargo Rates – Updated trends on air freight pricing per kg.
- Container Volume Guide – Capacity details for 20ft and 40ft containers.
- Logistics Glossary – Definitions for terms like Chargeable Weight, FOB, and CIF.