Percentage calculator
Quick percent math without opening a spreadsheet.
Type any two numbers and read all three percentage answers at once.
Cómo usar esta herramienta
- Type the two numbers in any of the three blocks.
- Read the three percentage answers below.
- Adjust the inputs to compare scenarios.
- Copy the figure you need.
Casos de uso típicos
- Calculating retail discounts before checkout.
- Checking tax or tip on a bill.
Límites y advertencias
- Computations use floating-point math; round the final number where appropriate.
- Educational helper only; for legal taxes, confirm with the official source.
Frequently asked questions
How do I calculate X percent of a number?
Multiply the value by X and divide by 100. Example: 15% of 200 = 200 × 15 ÷ 100 = 30.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. Example: 25 is 50% of 50 because 25 ÷ 50 × 100 = 50.
How is percent increase or decrease calculated?
Use (final − initial) ÷ initial × 100. A positive result is an increase; negative is a decrease.
Privacidad en esta página
Etiquetas de analítica de producto (si las añade después) deben cargarse solo tras el consentimiento. Este sitio no incluye rastreadores obligatorios de terceros.
Use this percentage calculator for shopping discounts, taxes, tips, statistics homework, or any number you want to grow or shrink by a percent. Numbers are not sent to any server.