Sleep Time Lab – Wellness Calculator
General Wellness Educational Calculator Only

Optimize Your Sleep & Wellness
Calculate cycles, track BMI, explore healthy habits

This tool provides general wellness information for educational purposes. Results are estimates and should not be considered medical advice.

90
Minutes per Cycle
7-9
Hours Recommended
⚠️ Medical Disclaimer: This calculator provides general wellness information only. It does not diagnose, treat, cure, or prevent any health condition. Always consult a qualified healthcare provider for personal health concerns.

Sleep Cycle Calculator

Find optimal bed or wake times based on standard 90-minute sleep cycles. Individual sleep needs may vary.

15 minutes (average)
5 minutes
10 minutes
15 minutes (average)
20 minutes
30 minutes

BMI & Wellness Overview

Body Mass Index is a screening tool, not a diagnostic measure. It doesn’t account for muscle mass, bone density, or overall health.

🔒 Privacy Notice: All calculations happen locally in your browser. No personal data is collected, stored, or transmitted to any server.
cm
cm
ft
kg
kg
lbs
Lightly Active
Sedentary
Lightly Active
Moderately Active
Very Active
Extremely Active
⚠️ BMI is a general screening tool and may not accurately reflect health status for athletes, elderly individuals, pregnant people, or those with certain medical conditions.

General Wellness Guidelines

Evidence-based tips for better sleep and overall health. Always consult professionals for personalized advice.

Room Temperature

Many sleep researchers suggest keeping bedrooms between 60-67°F (15-19°C) for optimal comfort.

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Screen Time

Studies suggest reducing blue light exposure 1-2 hours before bed may support natural melatonin production.

Consistency

Maintaining regular sleep and wake times is often recommended to support your body’s natural rhythm.

Caffeine Awareness

Some individuals may benefit from limiting afternoon caffeine to support evening restfulness.

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Physical Activity

General health guidelines often recommend regular moderate movement. Always get clearance from a doctor before starting new exercise.

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Dark Environment

Reducing light exposure at night may support your body’s natural sleep-wake cycle.

Frequently Asked Questions

General information about this tool and wellness topics.