How to Estimate the Volume of Your Shipment in Cubic Metres

Every transport quote begins with the same question, and it is the one most people cannot answer straight away: how much space does your shipment take up? Carriers sell space on a vehicle, so the number that shapes your price is not how heavy your belongings are but how many cubic metres they occupy on the floor of a van or a truck.

The good news is that you do not need a surveyor to work it out. A tape measure, a phone and fifteen minutes will get you close enough for a realistic quote. This guide shows how to measure, how to convert what you measure into the three units carriers actually use, and which mistakes make an estimate fall apart on collection day.

Why Volume Decides the Price

A van or a truck runs out of floor space long before it runs out of payload on a normal household load. Boxes of clothing, a sofa and a mattress are bulky and light, so the limiting factor is the space they block for everything else travelling on that route. That is why a carrier quoting a shared load prices the metres you occupy rather than the kilograms you weigh.

Weight takes over when a shipment is dense. Books, tools, tiles and machinery can reach a vehicle's weight limit while leaving space unused, so carriers apply a weight rule alongside the space rule and charge on whichever is higher. Both are explained further down.

Measure the Space, Not the Object

The single most useful habit is to measure the box an item would need if you built one around it. A bicycle is not the volume of its frame and wheels, it is the rectangle it blocks when it stands in a load. An armchair with curved arms still occupies its widest points from every side.

So for each item, measure the greatest length, the greatest width and the greatest height, write them in metres, and multiply the three together. Metres rather than centimetres saves a conversion step and keeps the arithmetic simple.

Length (m) x Width (m) x Height (m) = volume in cubic metres.

Boxes Are the Easy Part

Standard cartons repeat, so measure one of each size and multiply by how many you have. Three common sizes work out like this:

• A large carton of 60 x 40 x 40 cm is 0.6 x 0.4 x 0.4, which is 0.096 m³, near enough 0.1 m³.
• A medium carton of 50 x 40 x 40 cm is 0.08 m³.
• A small book carton of 40 x 30 x 30 cm is 0.036 m³.

Twelve large cartons are therefore about 1.15 m³. If your boxes are a mixture of sizes and you do not want to count them separately, measuring the largest and applying it to all of them is a safe way to round up.

Pack the boxes properly before you measure them, because a bulging carton measures larger and travels worse. Our guide on packing fragile items covers how to fill the gaps without inflating the box.

Furniture and Awkward Items

Furniture is where estimates drift, because people picture the item rather than the space it blocks. Measure at the widest points, and treat anything that cannot have weight stacked on top of it as though it reached the full height it needs. Worked through, a typical set of items looks like this:

• Two seat sofa, 2.00 x 0.90 x 0.85 m, is 1.53 m³.
• Double mattress, 2.00 x 1.60 x 0.25 m, is 0.80 m³.
• Single wardrobe, 1.00 x 0.60 x 2.00 m, is 1.20 m³.
• Dining table, 1.60 x 0.90 x 0.75 m, is 1.08 m³.
• Four chairs stacked, 0.60 x 0.60 x 1.60 m, is 0.58 m³.
• Bicycle, boxed or with the wheel removed, 1.40 x 0.80 x 0.30 m, is 0.34 m³.

Dismantling changes these numbers a great deal. A table with the legs off, a bed frame flat packed and a wardrobe taken apart can halve the space they need. If you plan to dismantle, measure the dismantled shape and say so when you ask for a quote, because the carrier needs to know whether the item arrives ready to load.

Adding It Up

Put every line in a list and total it. Using the items above plus twelve large cartons, the sum is 1.15 + 1.53 + 0.80 + 1.20 + 1.08 + 0.58 + 0.34, which comes to about 6.7 m³.

Then add a margin. Belongings do not tessellate, awkward shapes leave gaps that nothing else can fill, and almost everyone finds another two boxes in a cupboard the week before collection. Adding roughly ten percent to your total, which would turn 6.7 m³ into about 7.4 m³, is a sensible rule of thumb rather than a measured figure. Rounding up costs a little on the quote. Rounding down risks a re-price at the door or items left behind, which costs far more.

Loading Metres, the Unit for Shared Loads

For shared loads, many European carriers quote in loading metres rather than cubic metres. A loading metre is one metre of the length of the load floor across the full width of the vehicle. Since a standard road trailer is 2.4 m wide, one loading metre is 2.4 m² of floor.

Floor area of your load (m²) divided by 2.4 = loading metres.

A europallet has a footprint of 1.2 x 0.8 m, which is 0.96 m², so it counts as 0.4 loading metres. Height only enters the calculation if your items can be stacked. Anything that cannot take weight on top blocks the full height of the vehicle above its footprint, which is why a single fragile item can cost more space than its cubic metres suggest.

Volumetric Weight, the Unit for Parcel Networks

If your shipment is small enough to travel through a parcel or express network, you will meet a third unit. Volumetric weight converts the size of a package into a notional weight, and the carrier charges on whichever is greater, the actual weight or the volumetric one.

Length (cm) x Width (cm) x Height (cm) divided by the carrier's divisor = volumetric weight in kg.

A 60 x 40 x 40 cm carton is 96,000 cubic centimetres. With a divisor of 5,000 it counts as 19.2 kg even if the clothes inside weigh six. Divisors are set by each carrier and each service, so read the one printed in your quote rather than assuming a figure. This is the main reason a large, light box can cost more to send than a small, heavy one.

Four Mistakes That Break an Estimate

1. Measuring only the rooms you live in. The garage, the attic, the cellar storage box and the balcony hold the items people forget, and they are often the bulky ones.
2. Assuming everything stacks. Mirrors, televisions, glass table tops and plants take their footprint all the way up. List them separately so the carrier can plan around them.
3. Ignoring the heaviest single item. Space is only half the question. A safe, a piano, a stone worktop or a washing machine changes who can handle the load and whether two people are needed at the door.
4. Leaving out access. A fourth floor without a lift, a narrow canal house stair, a street with no loading bay or a gate the vehicle cannot pass all change the time a job takes, and time is priced. Say it upfront and the quote you receive is the quote you pay.

What to Send Us for a Quote

You do not need a perfect number. An item list is just as useful as a total in cubic metres, and photographs of each room are often faster than either. Send us:

• pickup city and postcode, and delivery city and postcode
• your total volume in cubic metres, or a list of furniture and the number of boxes
• the largest item and the heaviest item
• anything that cannot be stacked or dismantled
• access at both addresses: floor, lift, parking, stairs
• your preferred pickup date and how flexible it is

With that, we compare options from our partner carriers and come back with what each one would mean for your load. Send your list on WhatsApp (+31 612 713 794) or, if you are sending boxes rather than furniture, put the measurements you have just taken straight into the price check on our homepage, which asks for exactly these dimensions and weights.

If you already know roughly what you are sending, the route pages carry the detail for the most common corridors, including the Netherlands to Portugal, Germany to Portugal and the UK to Portugal. For a handful of cartons, see sending boxes to Portugal. For a load that should travel on its own vehicle, see dedicated van transport, and for a full household move, European relocation.

One Last Thing About Estimates

A quote is built on the volume you declare. If the load that appears on collection day is materially larger, the carrier can re-price it, split it or leave part of it behind, and none of those is a good morning. Measure once, add your margin, and tell us what you are unsure about. We would rather plan for the extra two boxes than find them at the door.

While you are listing items, note the values of the valuable ones too. What a carrier owes you if something is damaged is usually calculated per kilogram rather than from what an item is worth, which is explained in our guide to what cover applies on a European road move.