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Wagon Load Capacity Calculator

Work out wagon load capacity instantly with clear inputs, formula shown and shareable results.

About Wagon Load Capacity Calculator

Wagon payload is the permitted gross weight — axle load times number of axles — minus the tare. Dividing payload by wagon volume gives the cargo density above which the wagon reaches its weight limit before it fills, the same weight-versus-cube trade as in shipping.

Formula

Wagon capacity

gross = axle load x axles; payload = gross - tare; limiting density = payload / volume

Worked example

With the default values below, Wagon Load Capacity Calculator returns Payload capacity of 68.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Permitted axle load
22.5 t
Axles per wagon
4 axles
Tare weight of the wagon
22 t
Wagon volume
76 m³

Results

Payload capacity
68.00 t
Permitted gross weight
90.00 t
Density at which it fills up
0.895 t/m³
Tare as share of gross
24.4% %

Step by step

  1. 1Values used
  2. 2Wagon capacity
  3. 3Payload capacity= 68.00 t
  4. 4Permitted gross weight= 90.00 t
  5. 5Density at which it fills up= 0.895 t/m³
  6. 6Tare as share of gross= 24.4 %

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
  • Rail results are planning estimates only. Verify against the infrastructure manager's rule book, approved braking curves and applicable railway safety regulations.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Rail results are planning estimates only. Verify against the infrastructure manager's rule book, approved braking curves and applicable railway safety regulations.

Frequently Asked Questions

What axle loads are permitted?

Commonly 22.5 t on European main lines, 25 t on heavy-haul routes and 32.5 t or more on dedicated ore railways. Route classification governs.

Why does tare ratio matter?

Every tonne of tare is a tonne of payload lost. Lightweight wagon design directly improves the economics of the train.

Related Calculators

Wagon Load Capacity Calculator – Calculate Payload capacity