Loading Meter Formula & Examples

01

What is a loading meter?

A loading meter (LDM) is a floor-space measure used in European road transport. It represents one meter of trailer length across the standard internal trailer width (typically 2.4 m).

LDM matters most when goods cannot be stacked, or when freight pricing depends on how much trailer space a shipment occupies rather than its weight or volume alone. For a planner, it answers a single practical question: how much of the truck floor does this shipment take?

02

The formula

LDM = (Length × Width × Quantity) ÷ Trailer Width ÷ Stack Factor

Length and width in meters · quantity in identical units · trailer width default 2.4 m

Length — footprint length of the cargo or pallet.
Width — footprint width of the cargo or pallet.
Quantity — number of identical units in the shipment.
Trailer width — commonly 2.4 m in European road freight.
Stack factor — how many identical units can be safely stacked vertically. Use 1 if goods are not stackable.

03

Example calculations

Shipment	Calculation	LDM
1 Euro pallet	(1.20 × 0.80 × 1) ÷ 2.4	0.40
5 Euro pallets	(1.20 × 0.80 × 5) ÷ 2.4	2.00
10 Euro pallets, stack factor 2	(1.20 × 0.80 × 10) ÷ 2.4 ÷ 2	2.00
Custom crate 2.00 × 1.20 m	(2.00 × 1.20 × 1) ÷ 2.4	1.00

Stacking compatible units cuts LDM proportionally. Two of the same pallet stacked safely halve the floor space the shipment occupies.

04

When LDM is useful

LTL and groupage freight — partial-load shipments billed against occupied trailer length.
Palletized shipments — standard pallets translate cleanly into LDM.
Non-stackable goods — LDM is the right measure when stacking is not safe.
Long or wide cargo — one oversized item can occupy more LDM than several smaller ones.
Freight cost estimation — a quick sense of chargeable space before quoting.
Trailer planning — sanity-check how many shipments fit before booking.
Comparing shipment footprints — a single number across mixed cargo types.

05

Where LDM can mislead

Carrier rules differ. Some carriers apply their own LDM conversions or minimums.
Weight limits still matter. A trailer can run out of payload before it runs out of floor.
Height, fragility, and stackability matter operationally — LDM alone won’t tell you whether a shipment can be loaded next to or under another.
Dangerous goods (ADR) may have special segregation or routing rules that LDM does not capture.
Oversized freight may need permits, escorts, or specific trailer types.
LDM is not cubic meters. Two shipments with the same volume can have very different LDM.

06

Common reference values

Shipment	LDM
1 Euro pallet (1.20 × 0.80 m)	0.40
2 Euro pallets	0.80
5 Euro pallets	2.00
10 Euro pallets	4.00
Standard full trailer	≈ 13.6

Disclaimer. This calculator is an educational freight-planning tool. Carrier rules, trailer dimensions, stackability, load securing, weight limits, and dangerous-goods requirements may change the actual chargeable freight calculation. Always confirm with your carrier before booking.

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