Life Calculators
Quick tools for everyday calculations — percentages, tips, discounts, and more.
Dice Roll
Calculate the minimum, maximum, and expected average total for any dice combination.
Calculate →Percentage
Calculate percentages, percentage change, and what percentage one number is of another.
Calculate →Discount
Calculate the final price after a percentage discount, the amount saved, and the discount percentage.
Calculate →Tip
Calculate your tip amount, total bill, and split the check any number of ways.
Calculate →Age
Calculate your exact age in years, months, weeks, and days from your date of birth.
Calculate →Date Difference
Find the exact number of days, weeks, months, and years between any two dates — including business days.
Calculate →Time in X Minutes
Enter a start time and add or subtract any number of minutes (or hours) to find exactly what time it will be.
Calculate →Time X Minutes Ago
Enter any current time and subtract any number of minutes or hours to find out exactly what time it was in the past.
Calculate →Time Duration
Calculate the number of days and weeks between two dates.
Calculate →Business Days
Calculate the number of business days between two dates.
Calculate →Minutes to Hours
Convert minutes into hours (decimal) and hours plus minutes.
Calculate →Hours to Minutes
Convert hours, minutes, and seconds into total minutes, seconds, or decimal hours — instantly.
Calculate →Percent Increase
Calculate the percentage increase between two numbers instantly.
Calculate →Percent Decrease
Calculate the percentage decrease between two values instantly.
Calculate →Days Between Dates
Find the number of days between two dates, plus weeks and total months estimate.
Calculate →Age Difference
Calculate the age difference between two birthdays in years, months, and days.
Calculate →Time Until Date
Find how much time is left until a future date and time.
Calculate →Days Until
Find how many days are left until a future date.
Calculate →Work Hours
Calculate how many hours you worked in a day after accounting for breaks.
Calculate →Time Between Times
Find the time difference between two clock times, with optional overnight handling.
Calculate →Hours Between Dates
Calculate the total number of hours between two dates and times.
Calculate →Weeks Between Dates
Calculate the number of weeks between two dates.
Calculate →Percentage Difference
Calculate the percentage difference between two numbers using the standard percent difference formula.
Calculate →Percent Difference Calculator
Find the percentage difference between two distinct values.
Calculate →Average Calculator
Calculate the average (mean), sum, and count of two or three numbers.
Calculate →Ratio Calculator
Simplify ratios and convert them into decimals and percentages.
Calculate →Percentage of a Number Calculator
Easily find out what a specific percentage of a number is.
Calculate →Decimal to Percent Calculator
Convert any decimal number into a percentage instantly.
Calculate →Percent to Decimal Calculator
Convert a percentage into a decimal number instantly.
Calculate →Minutes to Decimal Hours Calculator
Convert time measured in minutes into a decimal hour format for payroll and billing.
Calculate →Decimal Hours to Minutes Calculator
Convert a decimal hour format back into standard hours and total minutes.
Calculate →Weighted Average Calculator
Calculate the weighted average of two values based on their relative weights.
Calculate →Fraction to Decimal Calculator
Quickly convert any fraction into a decimal number and percentage.
Calculate →Decimal to Fraction Calculator
Convert a decimal number back into a precise or approximated fraction.
Calculate →Discount Percentage Calculator
Find out exactly what percentage discount you received based on the original and sale prices.
Calculate →Fraction Calculator
Simplify any fraction and calculate its decimal and percentage equivalents.
Calculate →Ratio to Percentage Calculator
Convert any mathematical ratio into a clean percentage.
Calculate →Percentage Change Calculator
Calculate the percentage increase or decrease between an old value and a new value.
Calculate →Weighted Grade Calculator
Calculate your final class grade based on assignments and exam weights.
Calculate →Inches to cm
Convert inches to centimeters instantly.
Calculate →Hours to Seconds
Convert hours to seconds instantly.
Calculate →Christmas Countdown
Calculate how many days are left until Christmas.
Calculate →Halloween Countdown
Calculate how many days remain until Halloween.
Calculate →New Year Countdown
Calculate how many days remain until the New Year.
Calculate →Thanksgiving Countdown
Calculate how many days remain until Thanksgiving.
Calculate →Summer Countdown
Calculate how many days remain until summer begins.
Calculate →Winter Countdown
Calculate how many days remain until winter begins.
Calculate →Spring Countdown
Calculate how many days remain until spring begins.
Calculate →Fall Countdown
Calculate how many days remain until fall begins.
Calculate →°C to °F
Convert Celsius to Fahrenheit instantly.
Calculate →°F to °C
Convert Fahrenheit to Celsius instantly.
Calculate →°C to K
Convert Celsius to Kelvin for science and engineering.
Calculate →K to °C
Convert Kelvin to Celsius for everyday temperature understanding.
Calculate →yd to m
Convert yards to meters instantly.
Calculate →Min to Sec
Convert minutes to seconds instantly.
Calculate →Sec to Min
Convert seconds to minutes instantly.
Calculate →Days to Hours
Convert days to hours instantly.
Calculate →m to yd
Convert meters to yards instantly.
Calculate →Unit Price
Compare the unit price of two products to find the better value.
Calculate →Date Subtract
Subtract a number of days, weeks, or months from a date to find an earlier date.
Calculate →Hours to Days
Convert a number of hours into days, weeks, and minutes.
Calculate →Median
Find the median of up to 8 numbers.
Calculate →Mode
Find the most frequently occurring value in a set of up to 8 numbers.
Calculate →Range
Calculate the statistical range (max minus min) for up to 8 numbers.
Calculate →Std Deviation
Calculate population and sample standard deviation for up to 8 values.
Calculate →Months Between
Calculate the number of months between two dates using year and month inputs.
Calculate →Years Between
Calculate the number of complete years and remaining months between two dates.
Calculate →Date Add
Add years, months, and days to a starting date to find the resulting date.
Calculate →Working Hours
Calculate total working hours over a period based on days per week, hours per day, and vacation.
Calculate →Countdown
Calculate days, weeks, and months remaining until a future event.
Calculate →GPA
Calculate your weighted GPA across up to 6 courses using letter grades and credit hours.
Calculate →Grade Average
Calculate your weighted average percentage grade across up to 6 assignments or exams.
Calculate →Fuel Cost
Enter your trip distance, MPG, and fuel price to calculate exact fuel costs. Plan any road trip in seconds. Free tool.
Calculate →Road Trip Cost
Estimate the total cost of a road trip including fuel, food, lodging, and activities.
Calculate →Median of Five Numbers Calculator
Find the median (middle value) of exactly five numbers.
Calculate →Median of Ten Numbers Calculator
Find the median of exactly ten numbers.
Calculate →Mode of Numbers Calculator
Find the mode (most frequently occurring value) from up to six numbers.
Calculate →Range of Numbers Calculator
Calculate the range (difference between the largest and smallest values) of up to six numbers.
Calculate →Standard Deviation Calculator
Calculate the population standard deviation and variance for up to six numbers.
Calculate →Random Number Range Calculator
Find out how many integers exist within a given range and the total count of possible values.
Calculate →Password Strength by Length Calculator
Calculate the number of possible password combinations based on length and character set size.
Calculate →Countdown Days Calculator
Calculate the number of days remaining from today until a future event.
Calculate →Countdown Hours Calculator
Convert a countdown in days and hours into total hours, minutes, and seconds.
Calculate →Study Hours Calculator
Calculate how many hours per day you need to study to meet your total study goal before a deadline.
Calculate →Reading Time Calculator
Estimate how long it will take to read a book or article based on page count and reading speed.
Calculate →Daily Screen Time Calculator
Calculate your total daily screen time from multiple devices and see your weekly and yearly totals.
Calculate →Gas Mileage
Calculate your car's fuel efficiency in miles per gallon.
Calculate →Driving Carbon Footprint
Estimate the CO₂ emissions from your driving.
Calculate →Dog Age
Convert your dog's age to the equivalent human age.
Calculate →Cat Age
Convert your cat's age to the equivalent human age.
Calculate →Reading Pages
Calculate how many days it will take to finish a book.
Calculate →Weekly Screen Time
Convert your daily screen time to a weekly total.
Calculate →Typing Speed
Calculate your typing speed in words per minute.
Calculate →Pool Volume
Calculate the water volume of a rectangular swimming pool in gallons and liters.
Calculate →Pet Cost
Estimate the total annual cost of owning a pet.
Calculate →QR Generator
Generate a QR code instantly from any URL or text.
Calculate →Aspect Ratio
Calculate the aspect ratio of any width and height. Enter a target width to get the scaled height — perfect for video, images, and screen design.
Calculate →Reading Level
Calculate the Flesch-Kincaid grade level and reading ease score for any text.
Calculate →Grade Calculator
Find out what grade you need on your final exam to reach your target class grade.
Calculate →Concrete Calculator
Calculate how much concrete you need for a slab in cubic yards and bags.
Calculate →Wind Chill
Calculate the wind chill 'feels like' temperature using the official NWS formula.
Calculate →Heat Index
Calculate the 'feels like' temperature using the official NWS heat index formula.
Calculate →Dog Pregnancy
Estimate your dog's due date and pregnancy stage based on mating date.
Calculate →Mulch Calculator
Calculate how many cubic yards of mulch you need and how much it will cost.
Calculate →Shower Cost
Calculate how much your daily shower costs in water and energy per year.
Calculate →Pool Volume
Calculate how many gallons your swimming pool holds based on shape and dimensions.
Calculate →Paint Calculator
Calculate how many gallons of paint you need to cover a room.
Calculate →Gravel Calculator
Calculate cubic yards and tons of gravel, sand, topsoil, or mulch needed for any area.
Calculate →Fence Calculator
Estimate fence posts, panels, rails, and material cost for any fencing project.
Calculate →Flooring Calculator
Calculate how much flooring you need including waste allowance and total cost.
Calculate →Wallpaper Calculator
Calculate how many rolls of wallpaper you need for any room.
Calculate →Exact Age Calculator
Calculate your exact age in years, months, days, weeks, and total days lived.
Calculate →Carbon Footprint
Estimate your annual personal carbon footprint in tons of CO₂ across key lifestyle categories.
Calculate →Dog Age
Convert your dog's age to the human equivalent using modern science-based conversion rates by size.
Calculate →Tip by Service
Calculate the right tip for any service — restaurant, bar, hotel, taxi, salon, delivery, and more.
Calculate →