CrunchAnything category

Math & Everyday calculators & tools

Handle percentages, ratios, fractions, averages, dates, age and other everyday calculations without digging through formulas by hand.

Percentage Calculator

Calculate percentages, ratios and percentage-based increases or decreases.

Calculate percentage increase or decrease from an old value to a new value.

Split a bill, calculate a tip and show the per-person total.

Find the number of days and weeks between two calendar dates.

Simplify a ratio and scale both sides to a target value.

Add, subtract, multiply or divide two fractions and simplify the result.

Find mean, median, minimum, maximum, sum and count from a list of numbers.

Calculate age in years, months and days between a birth date and a selected date.

Add or subtract hours, minutes and seconds and normalize the result.

Calculate weekly work hours, breaks, overtime and estimated gross pay.

Evaluate scientific expressions with trig, logs, powers, roots, constants and parentheses.

Calculate an unweighted 4.0 GPA from letter grades and course credit hours.

Convert a decimal to a simplified fraction with a configurable maximum denominator.

Calculate square footage from length, width, quantity and optional waste or overage.

Each calculator shows the relationship it uses so you can check the logic, reuse the method and understand what changes when you adjust an input.

Every utility includes an interactive result plus an explanation, example, common questions and links to closely related calculators.