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How to use the Age Calculator

1. Open the Age Calculator page.
2. Enter the birth date. If you know the birth time, add it too — it makes the result precise down to the second.
3. Press the Calculate button. The result appears immediately, with nothing sent to any server.
4. Read your exact age in years, months, and days, plus totals in weeks, days, hours, minutes, and seconds. Use the copy button to save the summary.

How to use the Sleep Calculator

1. Open the Sleep Calculator page.
2. Choose a mode: either "wake-up time" to plan a bedtime, or "bedtime" to plan a wake-up time.
3. Set the time, and adjust the sleep latency if needed (the default is 15 minutes).
4. Review the suggested schedule and pick a cycle count that suits your night. Remember, the results are estimates based on average ~90-minute cycles.

Common issues

• Date input on mobile: tapping the date field opens your device's native date picker. If it does not open, update your browser, or type the date manually in the format the field suggests.
• Printing results: use your browser's menu — choose Print (or press Ctrl/Cmd + P), then pick "Save as PDF" if you want a file instead of paper.
• Copy button: copying to the clipboard requires a secure context, which this site provides through HTTPS. If copying fails, update your browser — older versions block clipboard access.

Keyboard shortcuts

Both calculators support keyboard shortcuts for common actions such as calculating, resetting, and switching focus. The full list is on the Shortcuts page.

Still stuck?

Email minitoolszz@gmail.com with your browser, device, and a description of the problem, and we will reply within a few business days. You might also find your answer in the FAQ.