Contact Us
Found an error in a calculation, spotted something outdated, or just want to say hello? Your feedback directly improves our tools. Choose the inbox below that best fits your message.
Before You Write
Calculator result looks wrong? Double-check the date you entered — most reports turn out to be a mistyped LMP or transfer date. Results are estimates; your provider’s dating always takes priority.
Wondering how accurate due dates are? Our guide on how accurate due dates are answers the most common questions.
Interested in our editorial process? See how we review every page before getting in touch.
Questions about the site, a calculator result, or anything else that does not fit below.
hello@duedate-calculator.comContent corrections, source requests, or questions about our review process.
editorial@duedate-calculator.comResponse Times
We aim to respond to all enquiries within 2–3 business days. Correction reports and medical review requests may take slightly longer because they go through our clinical review team. We read every message even when we cannot reply individually.
Reporting a possible error? Please include the page URL and the date or result you entered — it helps us investigate much faster.
Medical Questions
Please note that we are not able to provide personal medical advice. If you have questions about your pregnancy, please consult your healthcare provider, OB-GYN, or midwife. Our calculators provide estimates based on standard formulas and are not a substitute for professional medical care.