Fuel Surcharge Calculator

Work out fuel surcharge instantly with clear inputs, formula shown and shareable results.

About Fuel Surcharge Calculator

A fuel surcharge passes through the change in fuel price weighted by fuel's share of operating cost. A 30% rise in diesel with fuel at 32% of cost justifies a 9.5% surcharge — not 30%, which is the mistake carriers and shippers most often argue about.

Formula

Fuel surcharge

surcharge % = (current price - base price) / base price x fuel share of cost

Worked example

With the default values below, Fuel Surcharge Calculator returns Fuel surcharge of 9.472%. Change any input above and every figure here is recalculated in your browser.

Inputs used

Base fuel price in the contract: 1.25
Current fuel price: 1.62
Fuel share of operating cost: 32 %
Base freight rate: 850

Results

Fuel surcharge: 9.472% %
Surcharge amount: $80.51
Total rate payable: $930.51
Fuel price increase: 29.60% %

Step by step

1Values used
2Fuel surcharge
3Fuel surcharge= 9.472 %
4Surcharge amount= 80.51
5Total rate payable= 930.51
6Fuel price increase= 29.60 %

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.

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

Frequently Asked Questions

Why weight by the fuel share?

Because only part of the operating cost is fuel. Driver wages, vehicle finance and overheads do not move with the pump price.

What is the fuel share for road freight?

Typically 25-35% for long-haul trucking, lower for urban multi-drop where driver time dominates, and higher for shipping and aviation.