Age Calculator

Calculate exact age from birthdate

How to use

1. Enter your date of birth (or any start date).
2. See the exact age in years, months, and days.
3. Optionally compare against a specific date instead of today.

Why use this tool

• Exact breakdown: Get age in years, months, and days — not just whole years.
• Any two dates: Calculate the gap between any start and end date.
• 100% private: Everything runs in your browser. Your data is never uploaded to a server, so it's safe for confidential content.

Frequently asked questions

How is age calculated?

It counts the full years, months, and days between the two dates, accounting for different month lengths and leap years.

Can I calculate age on a future or past date?

Yes — set any target date instead of today to see the age at that moment.

Is my birth date stored?

No. The calculation runs in your browser and nothing is saved or uploaded.

Back to all tools