RA

Fast online calculators across finance, health, time, math, science and more.

Lifestyle

Sleep schedule

Translate between bedtimes, wake times and hours slept — without doing time math in your head.

0
Great for experimenting with “what if I shift by 30 minutes” without touching your phone clock app.

Sleep mini calculators

Move between bed, wake and hours — useful when you’re trying to stabilise a routine or adjust for travel.

Bedtime from wake time

Pick your wake-up time and desired hours of sleep — get a suggested bedtime.

Bed23:00Night before
Wake time from bedtime

Have a fixed bedtime? Add your sleep hours to get a realistic wake-up time.

Wake06:30
Sleep duration

Actual time in bed vs wake — accounts for crossing midnight.

Hours7.50