How accurate is this Melatonin Calculator?

Our calculator uses scientifically validated formulas and provides results based on peer-reviewed research. Results should be used as a general guide and not as medical advice.

Is this tool free to use?

Yes, this Melatonin Calculator is completely free to use. No registration or payment required.

Can I use this calculator on mobile?

Yes, our calculator is fully responsive and works on all devices including smartphones, tablets, and desktop computers.

Melatonin Calculator

Calculate optimal melatonin dosage and timing for better sleep

Melatonin Dosage Calculator

Find your optimal melatonin dose for better sleep

Your Profile

Age Group

Body Weight

Sleep Issue

Primary Sleep Concern

Melatonin Experience

First Time Some Experience Regular User

Target Bedtime

0.5 mg

Recommended Starting Dose

When to Take

20:00

2 hours before bed

21:00

Optimal (30-60 min)

21:30

30 min before bed

Your Dose on Safety Scale

0.3mg (Minimal) 3mg (Moderate) 5mg+ (High)

Best Practices

Take melatonin consistently at the same time each night for best results

Avoid screens and blue light for 1 hour before taking melatonin

Get bright light exposure in the morning to reset your circadian rhythm

Avoid caffeine at least 6 hours before bedtime

Keep your bedroom cool (65-68°F / 18-20°C) for optimal sleep

Important: Start with the lowest effective dose. Melatonin is not recommended for long-term use without consulting a healthcare provider. If sleep issues persist for more than 2 weeks, please see a doctor. Not recommended for pregnant/nursing women or children without medical supervision.

Melatonin

Natural sleep hormone support.