Random Birthday Generator

Generate one valid birthday in your chosen date range, formatted as MM/DD/YYYY with its weekday and estimated moon phase.

Random birthday

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Choose a date range to begin.

Defaults to 01/01/1990–12/31/2006. Moon phases are estimates.

What is the Random Birthday Generator?

It selects one real calendar date from the range you set. The result uses the familiar American MM/DD/YYYY format and adds useful context without calculating anyone’s age.

How to use the Random Birthday Generator

Choose the earliest and latest allowed dates, then select Generate Birthday. Copy the date and its details when you find a result you want to keep.

Features

  • User-editable start and end dates
  • Valid leap-year and leap-day handling
  • American date formatting and weekday display
  • Estimated eight-stage moon phase
  • Local generation with the Web Crypto API

Use Cases

Create fictional character birthdays, populate test records, prepare classroom calendar exercises, or add a date constraint to a writing prompt. For a simpler date-related choice, try the Random Year Generator.

FAQ

The generator treats both boundary dates as eligible. It does not store entered dates or generated results.

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