# Building Energy Cost Calculator

> Building Energy Cost: Cost = kWh × price. Methodology stated, your own inputs only.

Page: https://freecalculator.tech/tools/building-energy-cost-calculator
Last reviewed: 2026-10-20

## Formula

Cost = kWh × price. Cost per m² = cost ÷ area. Energy use intensity = kWh ÷ area.

- Methodology: energy cost and energy use intensity (EUI) per floor area, using the bill structure the U.S. EIA describes.
- Use one average price or run each fuel separately and add.
- No benchmark EUI is shown — buildings differ by use and climate.
- Cost = kWh × price. Cost per m² = cost ÷ area. Energy use intensity = kWh ÷ area.
- Inputs used: Currency (symbol only, never converted), Building energy use in the period, Your energy price per kWh (from your bill or a saved rate), Floor area.

## Inputs

- Currency (symbol only, never converted)
- Building energy use in the period
- Your energy price per kWh (from your bill or a saved rate)
- Floor area

## Worked example: A year

250,000 kWh at $0.14 for 5,000 m².
1. 250,000 × 0.14 = $35,000.
2. 35,000 ÷ 5,000 = $7.00 per m².
3. EUI = 50 kWh/m².

## Common questions

### Why isn't an electricity or fuel price filled in?

Prices differ by country, supplier, tariff and time of use, so there is no universal figure. Enter the rate from your bill or contract, or pick a dated saved rate if one is listed on the page.

### Gas and electricity together?

Convert gas to kWh and run each with its own price, then add the costs. Check the formula, example, and limitations on this page before using the result for a real facilities decision.

### Is there a good EUI?

It depends on building type and climate, so no benchmark is built in. Check the formula, example, and limitations on this page before using the result for a real facilities decision.

### Gross or net area?

Either — state which, and use the same basis when comparing. Check the formula, example, and limitations on this page before using the result for a real facilities decision.

### How do I use the Building Energy Cost Calculator?

Enter the required values for Currency (symbol only, never converted), Building energy use in the period, Your energy price per kWh (from your bill or a saved rate), Floor area. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.

### What formula does the Building Energy Cost Calculator use?

Cost = kWh × price. Cost per m² = cost ÷ area. Energy use intensity = kWh ÷ area. The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone.

## Limitations and assumptions

- Single average price.
- No weather normalisation.
- Results are estimates built only from the figures you enter. No electricity, fuel or gas price, equipment efficiency or benchmark is built in — tariffs vary by supplier, region and time, and equipment data must come from the manufacturer. Designs and installations must be checked by a qualified professional.
- The result depends on the values you enter for this building energy cost calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.

## Sources

- U.S. EIA — https://www.eia.gov/energyexplained/electricity/prices-and-factors-affecting-prices.php

## Cite this page

- APA: Free Calculator. (2026, October 20). Building Energy Cost Calculator. https://freecalculator.tech/tools/building-energy-cost-calculator
- MLA: "Building Energy Cost Calculator." Free Calculator, 20 Oct. 2026, https://freecalculator.tech/tools/building-energy-cost-calculator.
- Link: Building Energy Cost Calculator — Free Calculator, https://freecalculator.tech/tools/building-energy-cost-calculator