What This Tool Does
Percentages are everywhere—discounts at the store, interest on your credit card, and even the battery life on your phone. But for some reason, the math behind them never quite sticks in our heads. Was it 'multiply and divide' or 'divide and multiply'? It’s a common headache that should be simpler.
We built this tool to handle the three most common questions people have: 'What is X percent of Y?', 'What percent is X of Y?', and 'What is the percentage change from X to Y?'. You don't need to remember any formulas; you just fill in the blanks and get the answer instantly.
How to use
- 1Step 1: Find the box that matches your question (like 'Percentage Discount').
- 2Step 2: Type in your numbers. We support decimals, so don't worry about rounding.
- 3Step 3: The result appears live as you type. No 'Calculate' button needed.
- 4Step 4: If you're doing a percentage change, make sure you put the old number first.
- 5Step 5: Copy the result and get on with your day.
Example Scenarios
Use Case 1:Shopping: Figuring out exactly how much you'll save when that $89 shirt is 40% off.
Use Case 2:Tipping: Finding the perfect 18% or 20% tip for your dinner bill without the awkward mental math.
Use Case 3:Business Growth: Calculating the percentage increase in your website traffic from last month to this month.
Use Case 4:School Math: Quickly checking your answers on a math assignment or project.