Terms of Use

Last updated: 12 July 2026

Welcome to JetLagCal. By accessing or using jetlagcal.com (the "Site"), you agree to these Terms of Use. If you don't agree, please don't use the Site.

The most important term: JetLagCal provides general wellbeing information and behaviour-based suggestions only. It is not medical, health or professional advice, and it is not a substitute for consulting a qualified professional. For anything you take — including melatonin — consult your doctor or pharmacist.

1. What the Site is

The Site offers free, educational calculators that produce indicative suggestions about light exposure, sleep timing, meals, hydration and activity to help manage jet lag. All outputs are estimates and general guidance, framed as suggestions for you to consider — never as instructions or prescriptions.

2. No medical advice

Nothing on the Site is medical advice. We do not diagnose, treat or prescribe, and we never recommend or dose any medication, supplement or substance. The scores and schedules are indicative guides, not clinical assessments. Always seek the advice of your doctor, pharmacist or another qualified professional with any questions about your health, a medical condition, medication or supplement. Never disregard or delay professional advice because of something you read here. If you may be experiencing a medical emergency, contact your local emergency services.

3. Accuracy and individual variation

Circadian responses vary from person to person, and travel details change. While we aim to base our guidance on well-established principles, we make no warranty that any result will be accurate, complete or suitable for your circumstances. Use your own judgement and adapt any suggestion to what works for you.

4. Acceptable use

You agree to use the Site lawfully and not to misuse it — for example by attempting to disrupt it, scrape it in a way that harms its operation, or reproduce substantial portions of its content without permission.

5. Intellectual property

The Site's design, text, calculators and code are owned by JetLagCal or its licensors and are protected by applicable laws. You may use the Site for your personal, non-commercial travel planning. You may quote short passages with attribution and a link.

6. Third-party content and ads

The Site displays advertising and may link to third-party websites. We don't control and aren't responsible for third-party content, products or services. Your dealings with advertisers or linked sites are between you and them.

7. Limitation of liability

To the fullest extent permitted by law, the Site is provided "as is" and "as available", without warranties of any kind. We are not liable for any loss or damage arising from your use of, or reliance on, the Site or its guidance. Some jurisdictions do not allow certain limitations, so parts of this section may not apply to you; nothing in these Terms excludes rights that cannot lawfully be excluded, including under the Australian Consumer Law.

8. Changes

We may update the Site and these Terms at any time. Continued use after changes means you accept the updated Terms. We'll revise the "Last updated" date when we make changes.

9. Governing law

These Terms are governed by the laws of Australia, without regard to conflict-of-law principles.

10. Contact

Questions about these Terms? Email hello@jetlagcal.com or use our contact page.