Math & Numbers
Percentage, fractions, exponents, prime numbers, and more · 17 tools
Percentage Calculator
Calculate what is X% of Y, or find the percentage between two numbers.
Fraction Calculator
Add, subtract, multiply, or divide two fractions and simplify the result.
Exponent Calculator
Calculate base raised to the power of an exponent.
Prime Number Checker
Check if a number is prime and find its factors if it is not.
GCD & LCM Calculator
Find the Greatest Common Divisor and Least Common Multiple of two numbers.
Square Root Calculator
Calculate the square root of any non-negative number.
Scientific Notation Converter
Convert a number to and from scientific notation.
Roman Numeral Converter
Convert decimal numbers to Roman numerals and vice versa.
Random Number Generator
Generate a random number within a specified range.
Average / Mean Calculator
Calculate the mean, median, sum, and range of a set of numbers.
Ratio Calculator
Simplify a ratio of two numbers to its lowest terms.
Modulo Calculator
Find the remainder when one number is divided by another.
Factorial Calculator
Calculate the factorial of a non-negative integer (n!).
Percentage Change Calculator
Calculate the percentage increase or decrease between two values.
Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr) for two numbers.
Logarithm Calculator
Calculate the logarithm of a number for any base.
Circle Calculator
Calculate the area and circumference of a circle from its radius.
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About Math & Numbers
Math & Numbers calculators cover the everyday arithmetic that most people encounter in school, work, and daily life. From working out a percentage discount to simplifying a fraction, checking whether a number is prime, or converting between Roman numerals and decimals, these tools eliminate the need to remember formulas or reach for a spreadsheet. Each calculator shows the formula it uses and a step-by-step breakdown so you can verify the result and learn the underlying method.
Who Uses These Tools?
Students use these tools to check homework and understand the steps behind a solution. Shoppers rely on percentage and discount calculators at checkout. Professionals — from accountants to engineers — use GCD, LCM, and logarithm tools for quick verifications. Anyone who needs a reliable arithmetic answer without mental math will find a relevant tool here.
Common Scenarios
- Calculating a sale discount or markup at a store
- Simplifying fractions for a recipe or building project
- Checking whether a large number is prime for cryptography or puzzles
- Finding the average or median of a dataset for a report
- Converting a number to scientific notation for a lab assignment
- Generating a random number for a classroom activity or raffle
