Unit Converter
Length, weight, temperature, volume, area, speed, data, pressure, and energy.
Open →Temperature Converter
Celsius, Fahrenheit, and Kelvin with a quick reference table.
Open →Cooking Converter
Cups, tablespoons, milliliters, ounces, and grams for common ingredients.
Open →Percentage Calculator
Percent of a number, percent change, and what percent one number is of another.
Open →Roman Numeral Converter
Numbers to Roman numerals and back, with a year chart.
Open →Number to Words
Spell out any number in English, including check-writing format.
Open →Fraction Calculator
Add, subtract, multiply, and divide fractions; simplify and convert decimals.
Open →GPA Calculator
Weighted and unweighted GPA from letter grades and credit hours.
Open →Random Number Generator
Random numbers in a range, dice, coin flips, and picking from a list.
Open →Average Calculator
Mean, median, mode, range, and standard deviation of a list of numbers.
Open →Ratio Calculator
Simplify, scale, and solve ratios, including screen aspect ratios.
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