Age Calculator
Calculate your exact age in years, months and days from your date of birth.
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Age & Date Calculators
Ten focused tools for age, date difference, birthday countdowns, retirement planning and pet age calculations. Each result includes the formula.
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Age Calculators
Birthday Countdown
Count down the days, weeks and months until your next birthday.
Open calculatorAge on a Specific Date
Find out how old you were (or will be) on any specific date in the past or future.
Open calculatorDays Since Birth
Calculate the total number of days you have been alive since your date of birth.
Open calculatorMonths Since Birth
Find out how many months you have been alive, plus extra days.
Open calculatorWeeks Since Birth
Calculate how many weeks you have been alive, with extra days.
Open calculatorNext Birthday Calculator
Find out the exact date of your next birthday and how many days until then.
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Date Calculators
Date Difference Calculator
Find the exact difference between any two dates in years, months, days and weeks.
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Planning Calculators
Retirement Age Calculator
See your chosen retirement target date and the time remaining until then.
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Fun Calculators
Pet Age Calculator
Convert your dog or cat's age to human years using veterinary life stage estimates.
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