Free & Accurate

Age Calculator for Exact Results

Calculate age by date of birth, chronological age, age difference, birthdays, dog years, cat years, Korean age, and more.

Exact Age Calculator Age Difference Dog Years

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Chronological Age Calculator

Calculate your exact age in years, months, weeks, and days.

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Chronological Age in Months Calculator

Calculate chronological age in months for testing and assessments.

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Biological Age Calculator

Estimate your true biological age based on lifestyle factors.

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All Calculators

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Pearson Age

Calculate age in the format required for Pearson assessments.

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Brigance Age

Calculate chronological age for Brigance developmental assessments.

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Adjusted Age

Calculate adjusted (corrected) age for premature babies.

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Dog Years

Convert your dog's age to human years using modern formulas.

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Cat Years

Convert your cat's age to human years.

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Korean Age

Convert your age to the Korean age system.

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Age Difference

Calculate the exact age difference between two people.

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Birthday

Find out how many days until your next birthday.

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Retirement Age

Calculate when you can retire and plan for the future.

Instant Results

Get accurate calculations instantly. No waiting, no loading.

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All calculations happen in your browser. We never store your data.

100% Free

No signup, no fees. All calculators are completely free to use.