Planning a 21st/30th/40th/50th party
Updated August 20, 2025
Overview
This guide explores planning a 21st/30th/40th/50th party with steps you can verify using the AgeByDOB calculator. For deeper context, you may also enjoy How old is Drake today? (worked example) · How old is MrBeast today? (worked example) · Age insight #161: exact age tips and examples.
Key Takeaways
- Use the native date picker for accuracy on mobile and desktop.
- Read your age in years, months, and days for exact results.
- Bookmark your result URL so you can revisit quickly.
Step-by-Step
- Open the calculator and enter your DOB.
- Press Calculate to get the exact breakdown.
- Check the birthday countdown and milestones.
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