Everyday tools
Quick answers for school, home and travel: your exact age, the grade you need on a final, which package is the better buy, and what a road trip will cost in fuel.
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Age calculator
Find exact age in years, months and days on any date, plus total days lived and the countdown to the next birthday.
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Days until calculator
Count the days from one date to an event date, with weeks and days, months and days, weekdays and a countdown line. It also says when the date has passed.
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Day of the week calculator
Find the weekday for any Gregorian calendar date from year 1 to 9999, plus the day of the year and which occurrence of that weekday it is in the month.
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Time calculator
Add or subtract clock times and durations, such as 9:30 AM + 2:45 or 2:45 + 1:30:15. One expression per line, up to 50 lines; midnight crossings are noted.
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Time card calculator
Total daily and weekly work hours from clock-in and clock-out times with unpaid breaks, in hours:minutes and decimal hours, with optional gross pay.
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Military time converter
Convert 24-hour military time to 12-hour AM/PM time and back. Each line is detected on its own, up to 200 lines.
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GPA calculator
Calculate a credit-weighted GPA on a 4.0 scale from letter grades A+ to F, with an optional cumulative GPA that includes earlier credits.
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Final grade calculator
Find the score you need on a final exam to reach a target course grade, given your current grade and the weight of the final.
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Random number generator
Generate up to 1,000 random integers or decimals between a minimum and maximum, with or without repeats, using secure browser randomness.
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Roman numeral converter
Convert numbers 1 to 3999 to Roman numerals and standard Roman numerals back to numbers. Each line is detected on its own; nonstandard forms like IIII are rejected.
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Number to words converter
Write a number up to 999,999,999,999,999 in US English words, as dollars and cents, or in check-writing style such as "and 56/100 dollars".
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BMI calculator
Calculate adult body mass index from height and weight in US or metric units, with the standard weight category and the healthy weight range for that height.
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Unit price calculator
Compare up to 10 products by price per ounce, pound, gram, fluid ounce, liter or item, converting sizes within the same family, sorted cheapest first.
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Trip fuel cost calculator
Estimate fuel used and fuel cost for a drive from distance, fuel economy and fuel price, with a round trip option and a per-person split.
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Cooking measurement converter
Convert kitchen volume and weight units, and convert cups to grams for common ingredients using stated densities. Ingredient conversions are approximate.
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Pace calculator
Find running or walking pace, finish time or distance from the other two, with pace per km and per mile, speed and race finish times at that pace.
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Dice roller
Roll dice from notation such as 2d6+3, 1d20 or 4d6 drop lowest, with keep highest and keep lowest. Up to 100 dice of up to 1,000 sides, with every roll shown.
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Random picker
Pick one or more random items from a list, or shuffle the whole list, using secure browser randomness. Paste up to 10,000 items, one per line.
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