Tool category
Math Tools
Tools for calculations, base conversion, percentages, and unit conversion
GPA/GPAX Calculator
Calculate a term GPA from courses, credits, and grades, then estimate a new cumulative GPAX from prior credits and GPAX while reviewing each course's quality points.
Open toolPercentage Calculator
Find a percentage of a number, one group's share of two groups, a value after an increase or decrease, and simple annual interest with the formula and calculation base made explicit.
Open toolBase Converter
Convert integers exactly between bases 2–36, including binary, octal, decimal, and hexadecimal, with clear digit validation.
Open toolHeight and Length Converter
Convert among mm, cm, m, km, inches, feet, yards, and miles, see every unit in one table, and read human height conveniently as feet plus inches.
Open toolWeight and Mass Converter
Convert among mg, g, kg, metric tonnes, oz, lb, and stone with integer-based arithmetic and see every equivalent in one table.
Open toolExpense Splitter and Bill Sharing
Calculate what each person paid, owes, and should transfer by choosing the participants separately for every expense.
Open toolCredit-Term Interest Calculator
Calculate the two distinct questions described by the legacy page: simple interest on a fixed balance and annualized cost of declining a cash discount.
Open toolCalculator
Calculate basic arithmetic step by step with up to 12 displayed decimal places, keyboard controls, and temporary tab-only history without server storage.
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