SLEEPTOOLS.CO
Know exactly
when to sleep.
Free calculators for bedtime, wake time, sleep debt, baby schedules, and more. Based on sleep science, not guesswork.
Based on sleep cycle scienceShareable resultsMobile-friendlyNo account needed
Timing
Bedtime, wake time, nap length, and caffeine cutoff.
- Sleep Cycle Calculator→
- Bedtime Calculator→
- Wake Up Time Calculator→
- Nap Duration CalculatorSoon
- Caffeine Cutoff Calculator→
Health
Sleep debt, quality score, age-based needs.
- Sleep Debt Calculator→
- How Much Sleep Do I NeedSoon
- Sleep Deprivation CostSoon
- Sleep Quality ScoreSoon
Life Situations
For parents, shift workers, and travellers.
- Baby Sleep CalculatorSoon
- Shift Work Sleep CalculatorSoon
- Jet Lag Recovery CalculatorSoon
Sleep tools for better schedules.
Every calculator on SleepTools is built on established sleep science — 90-minute sleep cycles, NSF age-based guidelines, caffeine half-life models, and circadian rhythm research. The math is correct. The tools are free. No sign-up required.