weekwise

LMP or EDD in · dated, cited schedule out · offline

Pregnancy Due Date Calculator — Dated Week-by-Week Scan Windows & ANC Visit Schedule from LMP or EDD

Enter your LMP or due date — every scan window, ANC visit and Td dose dated, tickable and cited to MoHFW and NHS, and the record never leaves your browser.

The 40-bead strand — one bead per week of pregnancy. Enter a date below to light your current week.

Your dates

Start from

EDD = LMP + 280 days (40 weeks) — the 280-day form of Naegele’s rule. It assumes a regular 28-day cycle and accurate LMP recall. Scan dating overrides LMP dating: if your dating scan gave a due date, choose “EDD from a dating scan” and enter it directly.

Guideline track — two separately cited schedules, never blended

Your dated timeline

Enter your LMP or EDD above to turn the published windows into your own calendar dates. Tick what’s done — ticks stay in this browser only.

    Every row, cited

    A dated snapshot of the MoHFW and NHS schedules. Guidelines get revised — confirm current advice at your clinic. Rows are transcribed verbatim from the staged source documents listed in the repository.

    Private by construction

    “This record never leaves your browser” is enforced, not promised: this page ships a Content-Security-Policy of connect-src 'none', so the browser itself blocks any network send. No accounts, no analytics, no cloud. Your dates, ticks and name live only in this browser’s localStorage — clearing site data erases them. The hospital record / MCP card remains the record of truth.

    There are no reminders or notifications of any kind — the chart only updates when you open it.

    What this app will not do

    • No clinical advice. Your obstetrician/midwife overrides this chart — it only dates the cited published windows.
    • An EDD is an estimate. Only 4.4% of babies come on their due date (Royal Berkshire NHS FT, May 2026) — the app never predicts labour.
    • No replanning. Missed windows show as “passed”; the clinician replans. No reminders either — the chart only updates when opened.
    • Routine singleton schedules only. Multiple, IVF and high-risk pregnancies follow different plans this app does not model, and there are no IVF/conception-date modes or cycle-length adjustments — the honest override is entering your scan EDD.
    • No week-by-week fetal-development editorial (“baby is the size of a mango”) — that content is not citable to a guideline window, so it isn’t here.
    • No symptom checkers, kick counters or vitals logging, and no complication/high-risk pathway content.