Math Calculators
Percentage, fraction, and scientific calculators
Math
Percentage calculator
Calculate percentages, increases, decreases, and reverse percentages with step-by-step explanations
Math
Fraction calculator
Add, subtract, multiply, divide fractions with step-by-step simplification and decimal conversion
Math
Scientific calculator
Advanced scientific calculator with trigonometric, logarithmic, exponential, and statistical functions
Math
GCD and LCM calculator
Find greatest common divisor (GCD) and least common multiple (LCM) with prime factorization
Math
Prime number checker
Check if a number is prime, find factors, and list nearby primes with primality testing
Math
Fibonacci calculator
Generate Fibonacci sequence numbers, find nth term, and explore golden ratio relationships
Math
Base converter
Convert numbers between binary, octal, decimal, and hexadecimal
About our math calculators
Math tools are only useful if you can trust the method behind them. Each calculator in this category shows the formula it applies and, where relevant, the steps in between, so you can follow the logic and check the result rather than accepting it blindly.
The range covers everyday arithmetic such as percentages and fractions, through to number theory with primes, GCD and LCM, and Fibonacci sequences. Whether you are checking homework, preparing for an exam, or solving a practical problem at work, the goal is the same: a correct answer you understand.
A good practice is to estimate the answer roughly before you calculate. If the tool returns something far from your estimate, that is a signal to check your inputs rather than a reason to distrust the tool.
How to choose the right calculator
- Identify the single question you are trying to answer, then pick the tool whose name matches it most closely.
- Gather your inputs first so you can complete the form in one pass without guessing.
- Run more than one scenario to see how sensitive the result is to each value.
- Read the explanation and worked examples to confirm you are interpreting the result correctly.