Math
Mathematical and statistical calculators
Math Calculators
Free math calculators for everyday and academic use. From percentages and fractions to statistics and algebra, these tools give you instant, accurate results without the hassle of manual calculations.
Our math calculator collection is growing — we're building more tools to help students, professionals, and anyone who needs quick math answers.
Percentages
The percentage calculator handles the three most common percentage questions in one tool: find X% of a number, determine what percentage one number is of another, and calculate the percentage change between two values. All calculations happen in real time as you type — no buttons needed.
Whether you're calculating tips, grades, discounts, or growth rates, the percentage calculator gives you the answer instantly.
Your Math Toolkit
Our math calculators are designed to save you time on calculations that come up in school, work, and daily life. Each tool provides instant, accurate results so you can focus on what matters — understanding the numbers.
Have a suggestion for a math calculator you'd find useful? We're always looking to add tools that make math easier.
Frequently Asked Questions
Use the percentage calculator and enter the percentage and the number. For example, to find 15% of 200, enter 15 and 200. The result (30) appears instantly. The formula is: result = number × (percentage / 100).
Use the "X is what % of Y?" section. Enter the part (X) and the whole (Y). For example, if 30 is the part and 200 is the whole, the result is 15%. The formula is: percentage = (part / whole) × 100.
Use the percentage change section. Enter the original value and the new value. The calculator shows whether it's an increase or decrease and by what percentage. The formula is: change = ((new - old) / |old|) × 100.
Yes, all our calculators are completely free with no sign-up required. Just open the tool you need, enter your numbers, and get instant results.