Sleep Quality Calculator

Sleep quality is determined by duration, continuity, and how rested you feel. The National Sleep Foundation recommends 7-9 hours for adults

The calculator uses the standard published formula for sleep quality calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Sleep efficiency = Time asleep / Time in bed x 100 (>85% is good). Each step in the calculation is shown so you can verify the result manually.