Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Sleep
Sleep Efficiency Calculator
Calculate your sleep efficiency percentage — the ratio of actual sleep to time spent in bed — adjusted for night wakings and how long it takes you to fall asleep. Use it to assess whether poor sleep quality, not just duration, is the issue.
Fill in the required fields to see your result.
Sleep
Shift Work Sleep Calculator
Calculate when you should go to sleep to get 8 hours of rest before your shift, accounting for commute time. Essential for night-shift and rotating-schedule workers.
Fill in the required fields to see your result.
Key differences
| Sleep Efficiency Calculator | Shift Work Sleep Calculator | |
|---|---|---|
| Category | Sleep | Sleep |
| Inputs required | 4 | 2 |
| Result | Sleep Efficiency Score (%) | Recommended Sleep Start (hours) |
| What it does | Calculate your sleep efficiency percentage — the ratio of actual sleep to time spent in bed — adjusted for night wakings and how long it takes you to fall asleep. Use it to assess whether poor sleep quality, not just duration, is the issue. | Calculate when you should go to sleep to get 8 hours of rest before your shift, accounting for commute time. Essential for night-shift and rotating-schedule workers. |