Fuel Consumption Calculators

Biomass Fuel Consumption Calculator

Calculate biomass fuel feed rate from heat demand, moisture-adjusted heating value, and boiler efficiency.

Diesel Consumption Calculator

Calculate diesel fuel consumption from engine power output and specific fuel consumption (SFC).

Fuel Consumption Calculator

Calculate fuel consumption rate from heat input and fuel heating value. Works for any fuel with a known heating value.

Fuel Flow Rate Calculator

Calculate fuel flow rate from total fuel quantity consumed over a measured time period.

Fuel Mass Flow Calculator

Convert fuel volumetric flow rate into mass flow rate using fuel density.

Fuel Volume Flow Calculator

Convert fuel mass flow rate into volumetric flow rate using fuel density.

Heating Oil Consumption Calculator

Calculate heating oil consumption in liters per hour from heat input, boiler efficiency, and oil heating value.

LPG Consumption Calculator

Calculate LPG consumption in kilograms per hour from heat input and LPG heating value.

Natural Gas Consumption Calculator

Calculate natural gas consumption in cubic meters per hour from heat input and gas heating value.

Propane Consumption Calculator

Calculate propane consumption in kilograms per hour from heat input and propane heating value.

Turning Burn Rate Into Real Fuel Cost and Supply Planning

Fuel consumption is the number that connects a burner's output to an actual gas, oil, or propane bill — and different fuels are metered in completely different units, from cubic feet of natural gas to gallons of diesel to tons of biomass. Ten calculators here convert burner and equipment ratings into the fuel consumption figures used for supply sizing, tank planning, and cost estimation.

Popular Fuel Consumption Calculators

Ten tools span common combustion fuels:

  • Fuel Consumption Calculator — converts heat input and fuel heating value into a fuel consumption rate.
  • Natural Gas Consumption Calculator — estimates gas usage in cubic feet or cubic meters from burner load and gas heating value.
  • Diesel Consumption Calculator — calculates diesel burn rate from power output and specific fuel consumption.
  • Fuel Mass Flow Calculator — converts volumetric fuel flow into mass flow using fuel density.
  • Biomass Fuel Consumption Calculator — estimates biomass feed rate from heat demand and fuel moisture-adjusted heating value.

Why the Same Heat Output Needs Very Different Fuel Quantities

Fuels vary enormously in energy density — a kilogram of natural gas carries far more usable heat than a kilogram of wet biomass, largely because biomass moisture content consumes energy just evaporating water before any useful heat is released. This is exactly why fuel consumption calculations always run through a heating value (energy per unit mass or volume) rather than assuming any two fuels producing the same flame size consume fuel at comparable rates.

Frequently Asked Questions

Why does biomass fuel consumption depend so heavily on moisture content?
Wet biomass wastes a portion of its gross energy content evaporating moisture before combustion, so higher moisture fuel requires a higher feed rate to deliver the same net heat output as drier fuel.

Explore More

Need the heating value figures these calculators rely on? See the Heat & Energy Calculators, or check burner sizing in the Burner Calculators.