How to Use the Percentage Calculator
Our free online percentage calculator helps you quickly solve common problems:
- Find percentages – e.g., What is 20% of 150?
- Reverse percentages – e.g., 30 is what percent of 120?
- Find the whole – e.g., 50 is 25% of what?
- Percentage change – e.g., What’s the % increase from 120 to 150?
This makes it useful for personal finance, school assignments, business, and everyday calculations.
Why Use Calculator Pie?
- Fast – get answers instantly.
- Accurate – results rounded to two decimals.
- Simple – clean design, works on any device.
- Free forever – no sign-up needed.
Frequently Asked Questions (FAQs)
How do I calculate percentage increase?
Enter the starting number and the final number into the calculator. The result shows the % increase (or decrease if the number went down).
Can I use this tool for school or work?
Yes! Many students, teachers, and professionals use percentage calculators for math, finance, reports, and presentations.
Is Calculator Pie free to use?
Absolutely. It’s free and always will be.