TL;DR -- quick answer
LDM formula: (length × width) ÷ 2.4. For multiple units, multiply by quantity.
Example: 1 Euro pallet (1.2 × 0.8) ÷ 2.4 = 0.40 LDM. 10 Euro pallets = 4.0 LDM (~29% of a 13.6 m trailer).
Stackable: divide the result by 2. Check the LDM calculator.
What Are Loading Meters?
Loading meters (abbreviated LDM, from the German Lademeter) are the standard unit of measurement in European road freight. They show how many linear metres of trailer floor space a shipment occupies. LDM is the decisive number behind every freight quote because carriers price partial loads based on it.
Why does LDM matter? A standard trailer has a fixed length (13.6 m), and every occupied centimetre costs money. Whether you are shipping one pallet or a near-full load, without the LDM value you cannot compare offers properly or make a clean transport decision.
The LDM Formula
The calculation is simple. You need the length and width of your cargo (or pallet footprint) in metres:
LDM = (Length × Width) ÷ 2.4
The divisor 2.4 m is the usable internal width of a European semi-trailer (the floor width where cargo actually stands). By dividing the footprint by trailer width, you convert the occupied area into the proportional trailer length.
Example: Euro Pallet
A standard euro pallet (EUR/EPAL) measures 120 × 80 cm, or 1.20 × 0.80 m. Applying the formula:
LDM = (1.20 × 0.80) ÷ 2.4 = 0.96 ÷ 2.4 = 0.40 LDM
One euro pallet takes 0.40 loading metres. For 10 euro pallets: 0.40 × 10 = 4.00 LDM, roughly 29% of a standard trailer.
Table: Common Pallet Types and Their LDM Values
| Pallet Type | Dimensions (cm) | LDM / unit | Max per trailer (13.6 m) |
|---|---|---|---|
| Euro pallet (EUR/EPAL) | 120 × 80 | 0.40 | 33 pcs |
| Finnish pallet (FIN) | 120 × 100 | 0.50 | 26 pcs |
| CP pallet (Chemical Pallet) | 120 × 100 | 0.50 | 26 pcs |
| Industrial pallet (block) | 120 × 120 | 0.60 | 22 pcs |
| Half pallet (display) | 80 × 60 | 0.20 | 66 pcs |
| UK pallet (1200 × 1000 mm) | 120 × 100 | 0.50 | 26 pcs |
Finnish, CP and UK pallets share the same dimensions (120 × 100 cm), so the LDM value is identical at 0.50. The difference lies in construction and material, not the footprint.
LDM for Irregular Cargo (Bounding Box)
Not everything ships on standard pallets. Machinery, steel structures, construction elements - these have their own dimensions and fit no table. That is where the bounding box method comes in.
The principle is simple: measure the outermost points of the cargo and treat them as a rectangle on the trailer floor. Even if the object is round or triangular, what counts is the rectangle it inscribes into.
LDM = (Bounding box length × Bounding box width) ÷ 2.4
Example: Packaging Machine
A packaging machine measuring 2.30 m (length) × 1.50 m (width) × 1.80 m (height), weight 1,200 kg. The machine sits on a steel frame, not a pallet.
LDM = (2.30 × 1.50) ÷ 2.4 = 3.45 ÷ 2.4 = 1.44 LDM
Important: the machine is 1.80 m tall, nothing stacks on top of it. It claims 1.44 LDM from floor to ceiling. In groupage this matters because the hub operator cannot place a second shipment on it.
Example: Wooden Crate
Wooden crate 1.80 m × 1.20 m × 0.90 m, weight 450 kg. Not on a pallet, sits directly on the trailer floor.
LDM = (1.80 × 1.20) ÷ 2.4 = 2.16 ÷ 2.4 = 0.90 LDM
The crate is low (90 cm), in theory you could stack on top. In practice it depends on the crate's load rating and the carrier's agreement. If the crate is marked "do not stack", the full 0.90 LDM is charged with no reduction.
Stackability: How LDM Changes for Stackable Cargo
This is one of the biggest cost levers in road transport. If the cargo is stackable, two layers fit on the same floor area, and the LDM value halves.
LDM (stackable) = LDM (non-stackable) ÷ 2
For cargo to qualify as stackable, several conditions must be met:
- The pallet must support the second layer (check dynamic load rating)
- The goods must not be fragile or crush under pressure
- Total height of both layers must stay under ~2.70 m (usable trailer height)
- The load must be stable: properly packed, foil-wrapped, secured
Example: 20 Euro Pallets Stackable vs Non-Stackable
| Scenario | Calculation | LDM | Share of trailer (13.6 m) |
|---|---|---|---|
| Non-stackable (one layer) | 0.40 × 20 | 8.00 | 59% |
| Stackable (two layers) | 0.40 × 20 ÷ 2 | 4.00 | 29% |
The difference is significant. In the first case you take nearly 60% of the trailer and likely pay FTL rates. In the second, just under 30% fits comfortably as groupage. On a PL-DE route, that gap typically runs between 300 and 1,200 EUR.
Always tell the carrier whether your load is stackable. If you skip this, the hub operator defaults to non-stackable and bills the higher LDM.
Route Examples from Real Operations
Theory is theory. Here is how LDM plays out on actual European routes.
Route Rotterdam - Milan (NL-IT), 1,350 km
A customer ships 18 euro pallets of furniture in cartons. Pallets 120 × 80 cm, height 180 cm, total weight 8,500 kg. Furniture cannot be stacked, the cartons would crush.
| Parameter | Value |
|---|---|
| LDM (non-stackable) | 0.40 × 18 = 7.20 LDM |
| Share of trailer | 7.20 ÷ 13.6 = 53% |
| Freight weight | 8,500 kg |
| Recommendation | Check FTL or request groupage LDM rate |
7.20 LDM is the zone where groupage gets expensive. On NL-IT with over 50% trailer occupancy non-stackable, the groupage operator adds a serious margin. At these volumes on longer routes, FTL is often cheaper than groupage - sometimes by 15-20%. Both options are quick to check in our LDM calculator.
Route Warsaw - Hamburg (PL-DE), 720 km
Customer ships 6 euro pallets of automotive parts. Pallets 120 × 80 cm, height 140 cm, total weight 3,200 kg. Goods are stable, foil-wrapped, pallets are stackable.
| Parameter | Value |
|---|---|
| LDM (non-stackable) | 0.40 × 6 = 2.40 LDM |
| LDM (stackable) | 0.40 × 6 ÷ 2 = 1.20 LDM |
| Freight weight | 3,200 kg (well below 24 t limit) |
| Recommendation | Groupage (stackable = 1.20 LDM) |
At 1.20 LDM this is textbook groupage. The shipment travels with other consignments on one trailer. Transit time on this corridor: 2-3 business days.
Route Prague - Vienna (CZ-AT), 330 km
Industrial pallet 120 × 120 cm with a CNC machine. One piece, weight 2,800 kg. Not stackable, requires strap securing.
LDM = (1.20 × 1.20) ÷ 2.4 = 0.60 LDM
Only 0.60 LDM, but 2,800 kg on a single pallet. Here LDM is not the problem, weight is. The groupage operator will take the shipment but calculate by freight weight: 2,800 kg ÷ 1,750 kg (LDM conversion) = 1.60 LDM equivalent. You pay whichever is higher.
LDM vs Freight Weight: Which Value Counts?
This is often overlooked: LDM alone is not enough for pricing. The carrier considers both volume (LDM) and weight. The rule: you pay whichever is higher.
The standard conversion in European road freight: 1 LDM = 1,750 kg (freight weight). If your load takes 2 LDM but weighs 5,000 kg, the weight conversion gives 5,000 ÷ 1,750 = 2.86 LDM. The carrier bills 2.86 LDM, not 2.00.
Read more on when you pay by weight vs by volume in our article Weight vs Volume: When Do You Pay for What?
Common Mistakes When Calculating LDM
On the Poland-Germany corridor I have seen the same errors show up for years. These are the points to watch:
1. Ignoring Overhang
Goods sit on a pallet and overhang by 10 cm on each side? That is no longer a 120 × 80 cm pallet, it is a 140 × 100 cm load. What counts is the bounding box, not the pallet footprint. For 140 × 100 cm: LDM = (1.40 × 1.00) ÷ 2.4 = 0.58 LDM instead of 0.40.
2. Not Declaring Stackability
You skip the stackable flag on the order. The carrier defaults to non-stackable and charges double LDM. Your invoice comes higher and you cannot figure out why.
3. Confusing Pallet Length and Width
Euro pallet 120 × 80 cm - how does it sit on the trailer? Lengthwise or crosswise? For the LDM value it does not matter (the product is the same), but it matters for load planning. Trailer width is 2.44 m. Two euro pallets at 80 cm side by side total 160 cm, they fit. Two pallets at 120 cm side by side total 240 cm, it is a tight squeeze.
4. Calculating LDM Without Weight
As noted above: LDM alone is not enough. If the load is heavy relative to occupied space (steel, ceramics, glass), the freight weight can exceed the LDM from dimensions. Always calculate both and give the carrier full data: dimensions, pallet count, gross weight, stackability.
5. Using the Wrong Divisor
The 2.4 m divisor applies to standard curtainsider trailers. Other vehicles have different usable widths. A 7.5-tonne truck typically has 2.20 m, a Sprinter up to 2.00 m. Order a smaller vehicle but calculate LDM with 2.4, and you will underestimate. Vehicle dimensions are covered in our article Trailer Dimensions: What Fits Inside?
LDM vs CBM: What's the Difference?
In transport you will meet two units: LDM and CBM (cubic metre). Each has its place:
| Feature | LDM (loading meter) | CBM (cubic metre) |
|---|---|---|
| What it measures | Occupied trailer floor length | Cargo volume (L × W × H) |
| Main use | European road freight | Sea freight, air freight, warehousing |
| Formula | (L × W) ÷ 2.4 | L × W × H |
| Accounts for height? | No (except when stackable) | Yes |
| Weight conversion | 1 LDM = 1,750 kg | 1 CBM = 333 kg (sea) / 167 kg (air) |
In European road freight, LDM is the standard. CBM shows up mainly in overseas and air shipping. Sending goods on a trailer across Europe - use LDM. Container sea freight or air freight - CBM.
How Many Euro Pallets Fit on a Trailer?
One of the most common questions in forwarding. The answer depends on pallet arrangement and trailer type. A standard curtainsider (13.6 m) holds 33 euro pallets (2+1 across the width, 11 rows lengthwise). A Mega trailer (3 m internal height) has the same floor footprint but more room for a second layer - up to 66 pallets if the load is stackable. A 7.5-tonne truck fits up to 16 euro pallets, a Sprinter (3.5 t) holds 6 to 8 depending on the model.
Full vehicle-by-vehicle breakdown in our article How Many Euro Pallets Fit in a Truck?
FTL vs Groupage: When to Choose Which?
The LDM value helps you decide between the two main shipping modes:
FTL (Full Truck Load)
A dedicated trailer from origin to destination. FTL makes sense when your shipment exceeds 6 LDM (over 50% of a trailer), the goods are urgent, fragile or high-value, you need fast delivery with no transhipments, or you want full control over the transport.
Groupage (LTL / Part Load)
Your cargo shares trailer space with other shipments. Economical when you occupy under 2.4 LDM, delivery time is flexible (typically 3-5 business days), and you want to optimise costs for smaller volumes.
For shipments between 2.4 and 6 LDM, compare both options. Sometimes FTL is only marginally more expensive than groupage while offering faster, safer delivery. Details in FTL vs LTL: When Is a Full Truckload Worth It?
Checklist: LDM at a Glance
The minimum you need for a clean LDM calculation:
- Base formula: LDM = (length × width) ÷ 2.4
- Irregular cargo: measure the bounding box, not the goods themselves
- Stackable: if yes, halve the LDM
- Freight weight: 1 LDM = 1,750 kg, you pay whichever is higher (LDM vs weight)
- Vehicle: the 2.4 divisor is for standard trailers, other vehicles have different widths
- Full data: dimensions, gross weight, pallet count, stackable yes/no
Frequently Asked Questions (FAQ)
What is a loading meter (LDM)?
A loading meter (LDM) is the standard unit of measurement in European road freight. It represents how many linear metres of trailer floor space a shipment occupies. 1 LDM equals a 1-metre long strip across the full trailer width (2.4 m), so 2.4 m² of floor area.
How do I calculate LDM for a euro pallet?
A euro pallet (120 × 80 cm) takes 0.40 LDM. Formula: (1.20 × 0.80) ÷ 2.4 = 0.40. For 10 euro pallets: 0.40 × 10 = 4.00 LDM, roughly 29% of a standard trailer (13.6 m).
How many loading meters does a standard trailer have?
A standard curtainsider trailer has 13.6 loading metres. It fits 33 euro pallets in a single layer or 26 industrial pallets (120 × 100 cm). Payload is typically 24 tonnes.
Does LDM change for stackable cargo?
Yes. For stackable loads, the LDM value is halved because two layers fit on the same floor area. Example: 10 stackable euro pallets: 0.40 × 10 ÷ 2 = 2.00 LDM instead of 4.00 LDM. Conditions: pallets must carry the second layer and total height must stay below 2.70 m.
What is the difference between LDM and CBM?
LDM measures occupied trailer floor length, the standard in European road freight. CBM measures volume (cubic metres), used in sea and air freight. For road transport, LDM is more practical because it directly shows how much trailer space a shipment takes.
Calculate LDM Automatically
If you want to skip the manual math: our free LDM calculator computes loading metres, compares vehicle types and suggests the optimal shipping mode. Enter cargo dimensions, pallet count and weight - the tool handles the rest.
Need a Quote for a Specific Transport?
If you are pricing a shipment right now and want a rate from a forwarder with PL-DE and PL-IT corridor experience - message me directly: WhatsApp +48 726 620 364 or marcin@calcargo.eu. You get a concrete number, not a contact form.
