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Iddah Period Calculator | Divorce, Widowhood & Pregnancy

An iddah calculator estimates the end date of the Islamic waiting period after divorce or widowhood from the start date and situation: three menstrual cycles (≈3 lunar months, 89 days) after divorce, four lunar months and ten days (130 days) for widowhood per Surah al-Baqarah 2:234, or until delivery for pregnancy per Surah at-Talaq 65:4.

Last updated: September 2026 · Free · No sign-up required

Results

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Quick reference

Summary table:

SituationLengthBasis
Divorce (menstruating)3 cycles ≈ 89 days2:228
Divorce (no menses)3 lunar months ≈ 89 days65:4
Widowhood4 lunar months + 10 days ≈ 130 days2:234
PregnancyUntil delivery65:4

calendar_month Lunar counting

Widows' iddah uses true lunar months (29.5 days each) — four months plus ten days ≈ 130 calendar days.

medical_information Cycles, not calendar

For a menstruating divorcee the iddah is three actual cycles; the 89-day figure is only an approximation for planning.

child_care Pregnancy overrides

A pregnant woman's iddah ends only at delivery — even if that takes longer than the divorce iddah would have.

home During iddah

Widows observe iddah in the marital home; divorcees in the revocable (talaq raj'i) case stay as a wife, per fiqh details.

lightbulb A real example — divorce iddah from 1 September 2026

Divorce pronounced 1 Sep 2026; regular cycles; planning estimate.

Result: Three lunar months ≈ 29 November 2026 (89 days) as an estimate; her actual end date is the start of the third complete cycle.

What this means: Because the count follows real cycles, irregular cycles change the answer — the estimate is for planning, the scholar's ruling is authoritative.

Formula & methodology

Formula: Divorce: 3 lunar months (89 days) from notification; Widowhood: 4 lunar months + 10 days (130 days); Pregnancy: until delivery

The four iddah situations

  • Divorced, menstruating: three full menstrual cycles (Surah al-Baqarah 2:228). The calendar approximation counts three lunar months ≈ 89 days; the actual count follows your cycles.
  • Divorced, not menstruating (menopause, illness): three lunar months (Surah at-Talaq 65:4) ≈ 89 days.
  • Widow: four months and ten days (Surah al-Baqarah 2:234) — counted lunar, ≈130 days.
  • Pregnant: until delivery, however long (Surah at-Talaq 65:4) — no date can be fixed.

Lunar months begin from the moment of divorce or death, not from the next calendar new moon. This calculator gives planning estimates; for binding rulings consult a qualified scholar, since cycle irregularity and fiqh differences affect the answer.

Frequently asked questions

How long is iddah after divorce?
Three full menstrual cycles for a menstruating woman — roughly three lunar months (about 89 days). If she does not menstruate, three lunar months directly.
What is the iddah period after a husband's death?
Four lunar months and ten days (Surah al-Baqarah 2:234) — about 130 days — regardless of whether she menstruates.
When does the iddah clock start?
From the moment the divorce is pronounced or the death occurs — not from the next new month or from the paperwork.
What if a divorced woman is pregnant?
Her iddah lasts until she delivers (Surah at-Talaq 65:4), which replaces the three-cycle count entirely, however long the pregnancy runs.

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