Age in Hours Calculator: How Old Are You in Hours?

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On this page is an age in hours calculator. Enter your birthday and we'll tell you how many hours you've been alive.

Age in Hours Calculator

Using the Age in Hours Calculator

To use the days until now tool, just enter two inputs:

  • Birthday (in Current Timezone): Enter the date and time you – or someone else – were born (adjusting for the current timezone, if necessary)

Next, hit 'Calculate Hours Since Birthday'. You'll see two outputs:

  • Hours Old: A long, spelled out sentence telling you how many hours a person born on the input birthday has been alive.
  • Hours Old (Clean): Just the number of hours without any sentence.

(And don't worry, the tool does factor in leap years.)

Date, Age, and Time Calculators. Plus Others!

Want to be different and not say an age in years? Use one of the other birthday tools:

Also, see our other calculators – a page which includes many other time tools.



PK started DQYDJ in 2009 to research and discuss finance and investing and help answer financial questions. He's expanded DQYDJ to build visualizations, calculators, and interactive tools.

PK lives in New Hampshire with his wife, kids, and dog.

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