Medical Disclaimer
No Medical Advice
The contents of this website have been created with the greatest possible care and medically reviewed. Nevertheless, the information provided can never replace individual advice by professional staff. Always consult a doctor for health complaints or questions about the desire to have children.
Not Suitable for Contraception
Warning: The use of this calculator is expressly not suitable for contraception. Since the female cycle can fluctuate due to external factors (stress, illness, travel), a purely mathematical calculation offers no certainty for avoiding a pregnancy.
Limitation of Liability
The use of our calculators and the implementation of the tips provided is at your own responsibility. Liability claims against the website operator related to damage of a material or ideal nature caused by the use or non-use of the information provided are generally excluded.
Up-to-dateness
Medical findings are subject to constant change. We strive to keep the content up to date, but assume no guarantee for the constant correctness and completeness of the data provided.
Reviewed by Dr. Sarah Schmidt · Stand: 2026-03-01