Business Generator Sizing Calculator
Size a commercial or industrial backup generator. Enter critical loads and demand factor to find the minimum kW and kVA generator capacity needed.
Free Utility Calculators
5 toolsFurnace, generator, and utility fuel cost calculators. Browse our free utility tools below — no sign-up required.
Furnace Running Cost Calculator
Estimate the cost of running your gas or oil furnace per hour, day, and month. Enter fuel input, efficiency, and fuel price for accurate heating cost estimates.
Gas Water Heater Cost Calculator
Estimate the annual cost of running a natural gas water heater. Enter daily therms usage and gas rate to see monthly and yearly hot water expenses.
Generator Fuel Cost Calculator
Calculate generator fuel costs per hour, day, and month. Enter fuel consumption rate and fuel price to estimate total operating cost for any generator.
Home Generator Sizing Calculator
Size a home backup generator by entering essential loads. Calculate the total kW needed and find the right generator size including a safety margin.