Free Sleep Calculator for New Zealanders
Sleep runs in roughly 90-minute cycles. Waking at the end of a cycle, rather than mid-cycle, generally feels less groggy. The calculator works back from your wake time, allowing for time to fall asleep.
Your wake time
06:30
14 min
min
Best bedtime (6 cycles)
21:16
9 hours of sleep, plus fall-asleep buffer
Based on a wake time of 06:30, allowing 14 min to fall asleep.
6 cycles (9h)21:16
5 cycles (7h 30m)22:46
4 cycles (6h)00:16
3 cycles (4h 30m)01:46
2 cycles (3h)03:16
1 cycle (1h 30m)04:46
About our Sleep Calculator
Disclaimer: This calculator is for information only and does not constitute financial advice. Real-world figures may differ due to fees, rounding, rate changes, and policy specifics. Always confirm figures with the relevant provider before signing anything.