Math & Number Calculators
Basic and scientific calculators, percentages, fractions, averages, powers, logs, number theory, bases, and more — hub tools with modes, not thin duplicates.
Popular in Math & Number Calculators
Basic Calculator
Free online basic and scientific calculator with keypad, percentages, and history-free privacy.
Math Expression Evaluator
Safely evaluate arithmetic and scientific expressions without eval().
Percentage Calculator
Calculate percent of a number, increase/decrease, change, difference, and reverse percentage in one tool.
Fraction Calculator
Add, subtract, multiply, divide, simplify fractions; convert to/from decimals and mixed numbers.
Number Base Calculator
Convert binary, octal, decimal, and hex — plus binary add/subtract/multiply/divide.
All Math & Number Calculators
Average Calculator
Compute simple mean or weighted average from a list of numbers.
Arithmetic Calculator
Sum, difference, product, quotient, remainder (modulo), and absolute value in one tool.
Exponent Calculator
Square, square root, cube, cube root, powers, and factorial on one powers & roots hub.
Logarithm Calculator
Common log, natural log (ln), and arbitrary base logarithms.
Scientific Notation Calculator
Convert numbers to and from scientific (exponential) notation.
Rounding Calculator
Round, floor, ceil, or reduce numbers to significant figures.
Ratio Calculator
Simplify ratios, scale them, and solve proportions (a:b = c:x).
Number Theory Calculator
Prime check, prime factorization, factors, multiples, GCF, and LCM in one tool.
Random Number Calculator
Generate random integers or floats within a min/max range.
Binary to Text Converter
Convert supported input into the target format locally without uploading data.
Hex to Text Converter
Convert supported input into the target format locally without uploading data.
Octal Converter
Convert supported input into the target format locally without uploading data.
Math & number calculators — one hub per workflow
Basic/scientific keypad, percentages, averages, fractions, ratios, powers, logs, number theory, bases, and random numbers. Related synonyms are modes on the same page; thin aliases redirect to the hub.
Everyday math
Keypad calculator, percentages, averages, and arithmetic ops.
Fractions & theory
Fraction arithmetic, ratios, primes, factors, GCF/LCM.
Bases & random
Binary/hex converter, binary arithmetic, expression evaluator.
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