Efficiency Calculator

Enter any two of efficiency %, useful output, and total input to compute the third using efficiency = output ÷ input × 100%.

✓ Free to use

efficiency = output ÷ input × 100%

Efficiency η

η = 60 % · output = 60 J or W · input = 100 J or W

Made with MathPrepAI

Solve for

Enter the other two values

Useful output (J or W)Total input (J or W)