Energy Star Savings Calculator

Old Usage (kWh/yr)

New Usage (kWh/yr)

Rate ($/kWh)

Formula

Result = f(inputs)

How to calculate energy star savings?

Enter values and get instant results.

Why use this energy star savings calculator?

Quick, accurate, and free online calculation tool.

Free online percentage calculator. Find percentages, percentage change, percentage difference, and more. Fast, accurate, no signup required.