Diesel Fuel Savings Calculator

Estimate annual fuel consumption, projected savings, and emissions reductions across marine and over-the-road diesel fleets. Configure sector, fleet composition, fuel grade, and pricing - emissions math is traceable to MARPOL Annex VI, IMO MEPC.364(79), and EPA 40 CFR Part 86 / 1042 / 1036.

Operating sector

SELECT A SECTOR

Choose your sector

Picks regulatory framework, baselines and fuel grades.

Diesel sulfur / fuel grade

Drives SOₓ emissions per MARPOL Annex VI Reg 14. Pick a standard grade or type a custom ppm.

Standard grades

Pick a sector to load grades

Or enter a custom ppm value

ppm

Currently using: 15 ppm

Diesel price you pay

Per gallon, per barrel (42 gal), or per metric ton (267 gal HFO equivalent).

Currency

Pricing unit

Price

Fuel savings rate (TFA-published)

15%

Conservative 12%, average 15%, peak 17%+. Default tied to the published average across diesel trials.

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