Math Calculators
Free, accurate math calculators for percentages, fractions, statistics, geometry, and general scientific calculations. No signup required, results are instant, and your data never leaves your browser.
- Percentage Calculator
- Fraction Calculator
- Average Calculator
- Standard Deviation Calculator
- Random Number Generator
- Ratio Calculator
- Area Calculator
- Scientific Calculator
- 991 Scientific Calculator
- Point Estimate Calculator
About Our Math Calculators
Whether you’re working through algebra, statistics, geometry, or everyday number problems, our math calculators use standard mathematical formulas to give you fast and reliable results. Every calculator on this page is free, requires no signup, and works instantly in your browser.
How to Choose the Right Calculator
For everyday calculations, the Percentage Calculator and Fraction Calculator cover the most common needs. For data analysis, use the Average Calculator for mean, median, and mode, or the Standard Deviation Calculator for measuring data spread. For geometry, the Area Calculator handles squares, rectangles, circles, and triangles. For general problem-solving, our Scientific Calculator and 991 Scientific Calculator handle trigonometry, logarithms, and more.