Pregnancy dating from LMP, dating ultrasound (CRL) or IVF transfer date. Applies ACOG/FOGSI redating rules and lists antenatal milestone dates. All calculations run locally in your browser.
Disclaimer: This calculator is an educational reference, not a substitute for clinical judgment. EDD by reliable first-trimester ultrasound (CRL between 8+0 and 13+6 weeks) is more accurate than LMP-based dating and should generally be preferred when redating thresholds are met (ACOG Committee Opinion 700, 2017; FOGSI GCPR on dating). Always individualise antenatal care to local protocols (MoHFW LaQshya, FOGSI, ICMR), patient comorbidities and findings on examination.
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