Labors of Love • Due Date Calculator

Beautiful births. Compassionate care.

Phone: 864-285-0574

Serving Greenville & Spartanburg

Choose a calculation method

LMP (Last Menstrual Period)
Conception/Ovulation Date
Early Ultrasound
IVF Transfer

LMP date

Average cycle length (days)

Naegele’s rule: EDD = LMP + 280 days, adjusted by (cycle length − 28).

Conception/Ovulation date

EDD = conception + 266 days (≈ 38 weeks from conception).

Ultrasound scan date

GA at scan (weeks)

GA extra days (0–6)

EDD = scan date + (280 days − gestational age at scan).

IVF transfer date

Embryo stage

OB convention: Day-5 → EDD = transfer + 261 days; Day-3 → + 263 days.

Informational only — not a substitute for medical advice.

Results

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Basis: —

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Today: —

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≈ Gestational age − 2 weeks

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Methods reflect common OB conventions (e.g., Naegele’s rule). Confirm EDD with a clinician.

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