Percentage Increase

Percentage increase measures how much a value has grown relative to its original level. It is the positive case of percentage change — used for price rises, salary increases, population growth, and investment returns

The calculator uses the standard published formula for percent increase. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Percentage increase = ((New − Old) / Old) × 100. Each step in the calculation is shown so you can verify the result manually.