Math
Simple tools that work in your browser and keep your input on your device.
14 tools available
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Math
Number Base Converter
Convert signed integers between any bases from 2 to 36 with exact complete results and readable steps.
Open tool — Number Base ConverterScientific Calculator
Evaluate real expressions with powers, roots, logs and degree/radian trigonometry, with explicit precedence and clear numerical limits.
Open tool — Scientific CalculatorPercentage Change Calculator
Compare an original and new value to find the percentage increase or decrease and the numeric change.
Open tool — Percentage Change CalculatorAverage Calculator
Find the arithmetic mean of a number list, with a clear decimal-format choice, count and sum.
Open tool — Average CalculatorPercentage Calculator
Find a percentage of a number, one number as a percentage of another, or the whole from a known amount and percentage.
Open tool — Percentage CalculatorWeighted Average Calculator
Calculate an average from values and their relative weights. Check total weight and copy an explained result.
Open tool — Weighted Average CalculatorFraction Calculator
Calculate with fractions and mixed numbers, or simplify one fraction to lowest terms.
Open tool — Fraction CalculatorMedian Calculator
Find the median of a number list, with the middle values and a sorted preview.
Open tool — Median CalculatorLCM Calculator
Find the exact least common multiple of 2–20 positive whole numbers, with the GCD and optional steps.
Open tool — LCM CalculatorCircle Area & Circumference Calculator
Find circle area and circumference from a radius or diameter, with metric and imperial unit conversion.
Open tool — Circle Area & Circumference CalculatorScale Calculator
Convert drawing or model lengths to real dimensions, work backwards, or find the scale from matching lengths.
Open tool — Scale CalculatorRandom Number Generator
Generate random integers within inclusive limits, with optional uniqueness and sorting.
Open tool — Random Number GeneratorGPA Calculator
Calculate a credit-weighted term GPA or combine compatible quality-point and credit totals.
Open tool — GPA CalculatorFinal Grade Calculator
Find the exam score needed for your target course grade using your current grade and final weight, with upward rounding and clear limits.
Open tool — Final Grade Calculator