10 tools
Math Calculators
School and everyday math utilities — percentages, GPA, fractions, and more — all in your browser.
Percentage Calculator
Solve percent-of, reverse percent, and percent change problems instantly. Processing stays on your device.
CalculatorsInstantGPA Calculator
Add courses with letter grades and credits to get a weighted GPA on the common 4.0 scale. All math stays in your browser.
CalculatorsInstantScientific Calculator
A browser-based scientific calculator for everyday math, trig, and logs. Runs locally — nothing is uploaded.
CalculatorsInstantAverage Calculator
Paste or type a list of numbers to get mean, median, mode, count, and sum. Processing stays on your device.
CalculatorsInstantFraction Calculator
Perform fraction arithmetic and simplify results automatically in your browser.
CalculatorsInstantGCF Calculator
Calculate the greatest common factor of two whole numbers using the Euclidean algorithm.
CalculatorsInstantLCM Calculator
Calculate the least common multiple of two whole numbers from their GCF.
CalculatorsInstantProbability Calculator
Enter probabilities between 0 and 1 for two independent events to get AND and OR results.
CalculatorsInstantCombination Calculator
Compute how many ways to choose r items from n when order does not matter (nCr).
CalculatorsInstantPermutation Calculator
Compute how many ordered arrangements of r items from n (nPr).
CalculatorsInstant