Math Calculators
Percentage, fractions, GPA, dates, grades — clean calculators that show the formula.
Percentage Calculator
6 percentage modes: % of, % change, what %, add/subtract % and more.
Use Calculator →Fraction Calculator
Add, subtract, multiply, divide fractions — auto-simplified with mixed number output.
Use Calculator →Square Root Calculator
√ square root, ∛ cube root, and n² squared — with perfect square detection.
Use Calculator →GPA Calculator
Weighted GPA on a 4.0 scale — add courses, credit hours and letter grades.
Use Calculator →Age Calculator
Exact age in years, months, days — plus total days lived and next birthday countdown.
Use Calculator →Date Calculator
Days, weeks, months, years between any two dates. Includes working days.
Use Calculator →Final Grade Calculator
What score do you need on your final exam to hit your target course grade?
Use Calculator →Discount Calculator
Sale price from % off, or find what discount was applied. Quick % buttons.
Use Calculator →Word Counter
Count words, characters, sentences, paragraphs and reading time for any text.
Use Calculator →Password Generator
Cryptographically random passwords — choose length, character types, one-click copy.
Use Calculator →Scientific Calculator
Trig, log, ln, powers, roots, π, e — full keyboard support
Use Calculator →Recipe Converter
Scale any recipe up or down — all ingredient amounts update instantly
Use Calculator →Cups to Grams Converter
Convert cooking measurements for 18 common baking ingredients
Use Calculator →