Generator Fuel Consumption and Runtime Calculator
Calculate available runtime, required outage fuel and cost from a known rate, your OEM curve, or your own specific-consumption assumption. Browse the Power Calculator Hub.
Quick and Advanced Generator Fuel Calculator
Quick examples:
Fuel runtime results
Result explanation:
How to get the right burn-rate input
Use the exact model's current manufacturer fuel-consumption table at the expected load, or a measured stabilized rate. Keep rate, tank amount and price in the same fuel unit. Do not convert diesel gallons to natural-gas volume here.
Frequently Asked Questions
How do I calculate generator runtime from fuel?
Usable fuel ÷ burn rate at the expected load.
Can I estimate without an OEM curve?
Yes only with your own specific-consumption input, labeled as a planning estimate.
Will this extrapolate?
No. OEM interpolation is blocked outside the supplied points.
Does this size the generator?
No; use the Generator Size Calculator.