Volume and Volumetric Weight Calculator
Enter interior dimensions and get volume in liters, m³ and volumetric weight.
Clear and quick result
Designed for ecommerce and logistics with real transport criteria.
Calculating the volumetric weight of a package is essential before booking a shipment: shipping companies—GLS, SEUR, Correos, DHL, MRW—charge based on either the actual weight or the volumetric weight, whichever is greater. If you're sending a large but lightweight shipping box , the cost will be determined by its dimensions, not its weight on the scale.
With this volumetric weight calculator you can enter the measurements of your box in centimeters and instantly obtain the volume in cubic meters, in liters and the volumetric weight according to the divisor factor of the main transport agencies in Spain and Portugal.
What is volumetric weight and why does it matter?
Volumetric weight is an equivalence that converts the size of a package into a nominal weight in kilograms. It is calculated by dividing the package's volume (length × width × height in cm) by a factor that varies depending on the carrier: 5,000 for most ground shipping companies, 6,000 for some international carriers. If the result exceeds the actual weight of the package, the carrier will charge based on the volumetric weight.
This explains why shipping a 60×40×40 cm box of lightweight clothing can be more expensive than expected: its volumetric weight is 19.2 kg even though the contents only weigh 5 kg. Choosing the right size box for your product reduces the volumetric weight and saves money on every shipment.
How to calculate the cubic volume of a box?
The cubic volume, or volume in cubic meters, is obtained by multiplying the three interior dimensions of the box (length × width × height) and dividing by 1,000,000 if the measurements are in centimeters. A box measuring 40×30×30 cm has a cubic volume of 0.036 m³. This information is useful for calculating how many boxes fit on a pallet, in a container, or in a storage unit .
Dividing factors by carrier
| Carrier | Dividing factor | Guy |
|---|---|---|
| SEUR | 5,000 | National |
| GLS | 5,000 | National |
| MRW | 5,000 | National |
| Express Mail | 5,000 | National |
| DHL Express | 5,000 | International |
| UPS | 5,000 | International |
| FedEx | 5,000 | International |
Tips for reducing the volumetric weight of your shipments
- Use the tightest-fitting box possible: every extra centimeter increases the volume. A box that's 5 cm larger in each dimension can increase the cost by 30%.
- Fill the empty space: if you can't find the exact measurement, use kraft paper or packing chips to protect and prevent the carrier from resizing the box.
- Consider padded envelopes: for flat, lightweight products, a padded bubble envelope has zero volumetric weight at many agencies.
At TELECAJAS, we have over 200 box sizes so you can find the perfect fit for your product. Use our box size finder to find the ideal size.
Frequently Asked Questions about Volumetric Weight and Box Volume
What is the difference between actual weight and volumetric weight?
The actual weight is what the scale shows. Volumetric weight is a figure calculated from the package's dimensions (length × width × height ÷ divisor). Carriers charge based on the greater of the two values. Thus, a large box with light contents may cost more due to its volume than its weight.
How do you calculate the cubic meters of a box?
Multiply length × width × height (the three interior dimensions in centimeters) and divide the result by 1,000,000. For example, a box measuring 50×40×30 cm = 60,000 cm³ = 0.06 m³. This calculation helps determine how many boxes fit on a pallet, in a container, or in a storage unit.
What dividing factor do carriers in Spain use?
Most national ground shipping companies (GLS, SEUR, MRW, Correos Express) use a factor of 5,000. Some international or budget carriers may use 6,000. For high-volume contracts, it is possible to negotiate factors of 4,000.
How to reduce shipping costs based on volumetric weight?
The key is to use the right size box for your product. Every extra centimeter in any dimension increases the volume. Use packing material for protection without adding bulk, and for flat items, consider padded envelopes, which many shipping agencies don't penalize for volume.
Can I calculate the volume of non-standard cardboard boxes?
Yes. Enter the actual interior dimensions (length, width, height) into the calculator, regardless of whether the box is standard, custom-made, or recycled. If you need an exact size, please see our custom cardboard box service.
Do you need boxes of the right size to optimize your shipments?
At TELECAJAS we have over 200 sizes. Find the perfect box to reduce your volumetric weight and save on every shipment.
See also: Moving box calculator · Storage box calculator · Shipping boxes · How to pack fragile items
