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Percentage Calculator
Three everyday percentage questions answered at once: X% of Y, X as a % of Y, and the % change from X to Y.
- Instant results
- No signup
- Remembers your inputs
- Rates checked Oct 2026
How the percentage calculator works
X% of Y = X × Y ÷ 100. X as % of Y = X ÷ Y × 100. Change = (Y − X) ÷ X × 100.
How to use it
- Move the sliders or type exact figures — results update as you go.
- Read the highlighted result first, then the breakdown and chart.
- Open the year-by-year table to plan ahead, or copy the result into your notes.
Frequently asked questions
How do I calculate percentage increase?
Subtract the old value from the new, divide by the old value and multiply by 100.
Results are estimates for planning, not financial, tax or investment advice. Rates and rules change — confirm with your bank, the scheme's official notice or a CA. Last reviewed 13 October 2026.