Enter the period you did not pray — as years, as two dates, or from your age — and the calculator counts each prayer, removes the days no prayer was owed, and shows how long a steady pace of make-up will take.
365 days. At 1 make-up day per day, that is about 12 months of qada.
| Prayer | Count |
|---|---|
| Fajr | 365 |
| Dhuhr | 365 |
| Asr | 365 |
| Maghrib | 365 |
| Isha | 365 |
Every day in the period owes five prayers: Fajr, Dhuhr, Asr, Maghrib and Isha. The calculator turns the period into days — a year is counted as 365.2425 days, the length of the Gregorian year — and multiplies. Days of menstruation are then removed, because a prayer that was never owed cannot be a debt. Witr is added only if you tick it.
The age option works the way the Qibla Daily app sets up a plan: your age this year, less the age at which prayer became obligatory (bulugh), less the years you have already been praying consistently. Bulugh is reached at the signs of puberty; when those are not known, fifteen is the age the schools fall back on.
The result is an estimate, and that is all it needs to be. Scholars advise erring on the side of the higher number when you are unsure, since an extra prayer counts as voluntary while a missed one stays owed. The rules themselves — praying in order, what to do when the current prayer’s time is short — are in making up missed prayers, and the windows in which no prayer should be started, qada included in the Hanafi view, are measured in the times when you should not pray.