I'm sure it's happened to you: you need to send a package, you grab a box you have lying around, put the item in, and when you get to the shipping company, they give you a much higher price than you expected. "But it weighs next to nothing!" you think.
Here's the secret: space is money .
Today we're going to explain in a very simple way how to calculate the real volume of a box, what that "volumetric weight" thing is that scares so many people, and we'll introduce you to our new free tool: TeleCajas Smart Calc .
The basic formula (what we learned in school)
To find out how much space a cardboard box occupies, the math is very simple. You just need to multiply its three dimensions.
Formula: Length × Width × Height
If you measure in centimeters (cm), the result will be in cubic centimeters (cm³).
A quick example: Imagine a standard shoe box that is 30 cm long, 20 cm wide, and 15 cm high.
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30 × 20 × 15 = 9,000 cm³
And what does this mean in Liters or Cubic Meters?
Sometimes, seeing a number as large as 9,000 can be a little dizzying.
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In Liters: Divide by 1,000. That box has a capacity of 9 Liters .
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In Cubic Meters (m³): Divide by 1,000,000. That box occupies 0.009 m³ . This information is vital if you are going to rent a storage unit or fill a pallet.
The "Trick" of the Agencies: Volumetric Weight
This is where most people lose money. Shipping companies (Correos, SEUR, DHL, etc.) charge not only for the weight of the package on the scales (actual weight), but also for the space it occupies in their van .
Imagine you ship a huge box full of feathers. It weighs nothing, but it takes up half a truck. The carrier would lose money. That's why they invented Volumetric Weight .
How is it calculated?
The volume of your box is taken and divided by a "Conversion Factor".
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The standard (5000): It is the most common in urgent shipments and standard parcels.
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The strict one (4000): Used by some international companies (it's more expensive for you).
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The economical one (6000): Used in land freight transport or slow shipments (it's cheaper for you).
Try our Smart Calculator (TeleCajas Smart Calc)
We know that constantly using your phone's calculator to do division is a pain. That's why we've created this interactive tool right here below.
Volume Calculator
TeleCajas Smart Calc
What does this calculator do for you?
Unlike a normal calculator, the TeleCajas Smart Calc is designed with real logistics in mind:
- Real-time 3D visualization: As you enter the measurements, our interactive 3D cube changes shape so you can see what your box will actually look like.
- Automatic Space Calculation (m³): Ideal if you are planning a move or need to know how many boxes fit in your trunk.
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Volumetric Weight Detector: Choose the shipping type (Standard 5000, Economy 6000, etc.) and the calculator will tell you the "chargeable Kg" .
- Pro Tip: If the "Volumetric Weight" is greater than the actual weight of your items, you'll be charged the volumetric weight . Use a smaller box to save money!
Volume of the most popular boxes
So you don't have to calculate every time, here's the volume of the best-selling moving and shipping boxes :
| Measurements (cm) | cm³ | Liters | m³ | Recommended use |
|---|---|---|---|---|
| 40 × 30 × 30 | 36,000 | 36 L | 0.036 | Books, heavy objects |
| 50 × 35 × 35 | 61,250 | 61 L | 0.061 | General use, vinyl records |
| 60 × 40 × 40 | 96,000 | 96 L | 0.096 | Clothing, textiles, lightweight items |
| 80 × 60 × 55 | 264,000 | 264 L | 0.264 | Bulky items, storage |
You can see all the moving boxes in our catalog with more than 200 sizes available.
How to calculate volume in liters?
When we talk about the volume of a cardboard box, we usually do so in liters . The conversion is very simple:
- Divide by 1,000 to convert from cm³ to liters
- Divide by 1,000,000 to convert from cm³ to m³
1,000 cm³ = 1 Liter
Length (cm) × Width (cm) × Height (cm) = Volume (cm³) ÷ 1,000 = Liters
Example with our 60×40×40 cm moving box :
60 × 40 × 40 = 96,000 cm³ ÷ 1,000 = 96 liters
This information is very important to know the space the box occupies when stored or transported and is crucial when requesting quotes from parcel delivery companies.
Quick conversion table
| Of | TO | Operation |
|---|---|---|
| cm³ | Liters | ÷ 1,000 |
| cm³ | m³ | ÷ 1,000,000 |
| Liters | m³ | ÷ 1,000 |
| mm³ | Liters | ÷ 1,000,000 |
Volumetric weight: why size matters (a lot)
Choosing the right box isn't just about protection, it's about saving money . Shipping companies don't just charge for the weight of the package on the scales (actual weight), but also for the space it occupies in their van .
To calculate the volumetric weight, the volume is divided by a "conversion factor" that varies depending on the carrier:
- Factor 5000 — The most common in express shipments and standard parcels
- Factor 4000 — More stringent, used for international shipments (more expensive)
- Factor 6000 — Economical, for ground transport or slow shipping
Example with our 60×40×40 cm box and an actual weight of 5 kg:
96,000 cm³ ÷ 5,000 = 19.2 kg (volumetric weight)
Since the volumetric weight (19.2 kg) is greater than the actual weight (5 kg), you will be charged for 19.2 kg . If the box weighed 22 kg, the billable weight would be 22 kg, because the higher value is always charged.
Cost-saving tip: Using a box that's too big can double your shipping cost . Always choose the box that best fits the size of your product. At TeleCajas, we have over 200 sizes to help you find the perfect one.
Are you planning a move and want to calculate how many boxes you'll need? Check out our guide: How many boxes do you need for your move?
Buen día si yo quiero traer 5 pares en cajas de zapatos en un bulto completo, cuántos pares podría yo colocarlo en un bulto con sus cajas
Le agradecemos su valoración y nos alegra que le haya sido util. El sistema decimal europeo se usa el punto “.” para la separacion de millar y la coma “,” para los decimales. Deberiamos haberlo avisado, vamos a editar post. Saludos cordiales!
Todo muy bien pero me confundí con el uso del punto ya que para poner mil ustedes pusieron 1.000 y para mi eso es uno…saludos…y muchas gracias.
Buenas tardes, muchas gracias ias por compartir tan clara información.
Soy lic en Comercio Internacional y despachante de Aduanas, estaba sacando un costo de contenedor de 20 ’ y justo apareció su empresa, que pese a ser un dato doméstico fue de gran utilidad.
Saludos!