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Percentage
Find a percentage of a number. Enter the number and percent to see the result, formula and calculation steps.
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522 calculatorsEveryday life calculators.
Make everyday decisions a little simpler.
42 calculators · Star a calculator to find it in Favorites.
Everyday
Speed & distance
Calculate average speed from distance and time.
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Discount calculator
Find the final price after a discount.
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Age calculator
Calculate age between a date of birth and a chosen date. See the calendar-based result, calculation steps and date assumptions.
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Date difference & day counter
Date difference & day counter: use start date, end date. Review the formula, worked example and calculation steps.
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Date calculator · add or subtract days
Date calculator · add or subtract days: use start date, days to add · negative to subtract, count. Review the formula, worked example and calculation steps.
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Day of the week
Day of the week: use calendar date. Review the formula, worked example and calculation steps.
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Time calculator · add minutes
Time calculator · add minutes: use starting time, minutes to add · negative to subtract. Review the formula, worked example and calculation steps.
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Hours worked & time card
Hours worked & time card: use start time, end time, unpaid break. Review the formula, worked example and calculation steps.
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Time duration · date and clock
Time duration · date and clock: use start date, start time, end date. Review the formula, worked example and calculation steps.
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UTC time zone converter
UTC time zone converter: use utc date, utc time, destination timezone. Review the formula, worked example and calculation steps.
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GPA · supplied grade points
GPA · supplied grade points: use grade points for each course, corresponding course credits. Review the formula, worked example and calculation steps.
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Final grade needed
Final grade needed: use current average, final exam weight, desired course grade. Review the formula, worked example and calculation steps.
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Fuel cost
Fuel cost: use journey distance, fuel consumption, fuel price. Review the formula, worked example and calculation steps.
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Fuel economy & gas mileage
Fuel economy & gas mileage: use distance driven, fuel used. Review the formula, worked example and calculation steps.
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Tip & bill split
Tip & bill split: use bill before tip, tip percentage, people sharing equally. Review the formula, worked example and calculation steps.
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Running pace
Running pace: use distance, elapsed time. Review the formula, worked example and calculation steps.
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Sleep time arithmetic
Sleep time arithmetic: use wake-up time, planned hours in bed, additional minutes in bed. Review the formula, worked example and calculation steps.
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Unit converter
Convert a value between compatible units. Select source and target units, then review the conversion factor and calculation steps.
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Temperature · Celsius, Fahrenheit & Kelvin
Temperature · Celsius, Fahrenheit & Kelvin: use temperature, source scale, destination scale. Review the formula, worked example and calculation steps.
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IPv4 subnet calculator
IPv4 subnet calculator: use ipv4 address, cidr prefix length. Review the formula, worked example and calculation steps.
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Roman numeral converter
Roman numeral converter: use whole number. Review the formula, worked example and calculation steps.
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Base64 text encoder / decoder
Base64 text encoder / decoder: use text or padded base64, operation. Review the formula, worked example and calculation steps.
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URL component encoder / decoder
URL component encoder / decoder: use text or encoded component, operation. Review the formula, worked example and calculation steps.
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Bandwidth & download time
Bandwidth & download time: use file size, connection throughput. Review the formula, worked example and calculation steps.
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GDP · expenditure approach
GDP · expenditure approach: use consumption, investment, government spending. Review the formula, worked example and calculation steps.
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Wind chill · NWS formula
Wind chill · NWS formula: use air temperature, wind speed. Review the formula, worked example and calculation steps.
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Dew point · liquid-water approximation
Dew point · liquid-water approximation: use air temperature, relative humidity. Review the formula, worked example and calculation steps.
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Random integer generator
Random integer generator: use minimum integer, maximum integer, how many integers. Review the formula, worked example and calculation steps.
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Dice roller
Dice roller: use sides per die, number of dice. Review the formula, worked example and calculation steps.
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Secure password generator
Secure password generator: use password length, allowed characters. Review the formula, worked example and calculation steps.
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Next birthday
Next birthday: use date of birth, from date, february 29 in non-leap years. Review the formula, worked example and calculation steps.
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Date to Roman numerals
Date to Roman numerals: use date, date order. Review the formula, worked example and calculation steps.
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Test grade
Test grade: use total points or questions, points earned or correct answers. Review the formula, worked example and calculation steps.
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Aspect ratio
Aspect ratio: use width, height. Review the formula, worked example and calculation steps.
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Screen diagonal
Screen diagonal: use screen width, screen height. Review the formula, worked example and calculation steps.
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Pixels per inch
Pixels per inch: use horizontal pixels, vertical pixels, screen diagonal. Review the formula, worked example and calculation steps.
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Download time
Download time: use file size, connection speed. Review the formula, worked example and calculation steps.
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Split bill
Split bill: use bill before tip, tip, people. Review the formula, worked example and calculation steps.
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Fuel range
Fuel range: use fuel available, consumption. Review the formula, worked example and calculation steps.
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Travel time
Travel time: use distance, average speed, break time. Review the formula, worked example and calculation steps.
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Meeting cost
Meeting cost: use participants, average hourly cost per person, duration. Review the formula, worked example and calculation steps.
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