😴Saúde

Calculadora de Sono

Calculate the best bedtime or wake-up time based on 90-minute sleep cycles. Waking up between cycles feels more refreshing than being jolted awake mid-cycle.

Wake-up time

Go to bed at one of these times:

00:46

4 cycles

6.0 hrs

23:16✓ Recommended

5 cycles

7.5 hrs

21:46✓ Recommended

6 cycles

9.0 hrs

20:16✓ Recommended

7 cycles

10.5 hrs

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How it works

This calculadora de sono runs entirely in your browser — no data is sent to any server. Simply fill in the fields above and the result updates instantly. You can copy the output with the copy button provided.