1. What is Sleep Efficiency?

Definition: Sleep efficiency is the percentage of time spent asleep while in bed. It's a key measure of sleep quality.

Purpose: This calculator helps adults assess their sleep quality by comparing actual sleep time to total time spent in bed.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( SE \) — Sleep efficiency (%)
• \( T_s \) — Time actually asleep (hours)
• \( T_b \) — Total time spent in bed (hours)

Explanation: The formula calculates what percentage of your time in bed was actually spent sleeping.

3. Importance of Sleep Efficiency

Details: Good sleep efficiency (85% or higher) indicates healthy sleep patterns. Lower percentages may suggest sleep disturbances or insomnia.

4. Using the Calculator

Tips: Enter the time you actually slept and the total time you spent in bed (both in hours). Time asleep cannot exceed time in bed.

5. Frequently Asked Questions (FAQ)

Q1: What is a good sleep efficiency percentage?
A: 85% or higher is considered good sleep efficiency. Below 75% may indicate sleep problems.

Q2: How can I improve my sleep efficiency?
A: Maintain consistent sleep schedule, optimize sleep environment, limit caffeine/alcohol, and reduce screen time before bed.

Q3: Should I include naps in this calculation?
A: No, this calculator is designed for nighttime sleep periods only.

Q4: What if my time asleep is more than time in bed?
A: The calculator won't accept this as it's not possible. Double-check your entries.

Q5: How accurate is this calculator?
A: It provides a basic estimate. For clinical assessment, consult a sleep specialist who may use polysomnography.