islaLast period started in April: when is the next one?
Find the day your last period started in the left column and your usual cycle length along the top. The date where they meet is the estimated start of your next period. April has 30 days.
With a 21-day cycle, a period that starts on April 1 to 9 is followed by the next one before April ends. With a 28-day cycle, a period that starts on April 1 to 2 is followed by the next one before April ends.
| Last start | 21-day cycle | 25-day cycle | 28-day cycle | 30-day cycle | 32-day cycle | 35-day cycle |
|---|---|---|---|---|---|---|
| Apr 1 | Apr 22 | Apr 26 | Apr 29 | May 1 | May 3 | May 6 |
| Apr 2 | Apr 23 | Apr 27 | Apr 30 | May 2 | May 4 | May 7 |
| Apr 3 | Apr 24 | Apr 28 | May 1 | May 3 | May 5 | May 8 |
| Apr 4 | Apr 25 | Apr 29 | May 2 | May 4 | May 6 | May 9 |
| Apr 5 | Apr 26 | Apr 30 | May 3 | May 5 | May 7 | May 10 |
| Apr 6 | Apr 27 | May 1 | May 4 | May 6 | May 8 | May 11 |
| Apr 7 | Apr 28 | May 2 | May 5 | May 7 | May 9 | May 12 |
| Apr 8 | Apr 29 | May 3 | May 6 | May 8 | May 10 | May 13 |
| Apr 9 | Apr 30 | May 4 | May 7 | May 9 | May 11 | May 14 |
| Apr 10 | May 1 | May 5 | May 8 | May 10 | May 12 | May 15 |
| Apr 11 | May 2 | May 6 | May 9 | May 11 | May 13 | May 16 |
| Apr 12 | May 3 | May 7 | May 10 | May 12 | May 14 | May 17 |
| Apr 13 | May 4 | May 8 | May 11 | May 13 | May 15 | May 18 |
| Apr 14 | May 5 | May 9 | May 12 | May 14 | May 16 | May 19 |
| Apr 15 | May 6 | May 10 | May 13 | May 15 | May 17 | May 20 |
| Apr 16 | May 7 | May 11 | May 14 | May 16 | May 18 | May 21 |
| Apr 17 | May 8 | May 12 | May 15 | May 17 | May 19 | May 22 |
| Apr 18 | May 9 | May 13 | May 16 | May 18 | May 20 | May 23 |
| Apr 19 | May 10 | May 14 | May 17 | May 19 | May 21 | May 24 |
| Apr 20 | May 11 | May 15 | May 18 | May 20 | May 22 | May 25 |
| Apr 21 | May 12 | May 16 | May 19 | May 21 | May 23 | May 26 |
| Apr 22 | May 13 | May 17 | May 20 | May 22 | May 24 | May 27 |
| Apr 23 | May 14 | May 18 | May 21 | May 23 | May 25 | May 28 |
| Apr 24 | May 15 | May 19 | May 22 | May 24 | May 26 | May 29 |
| Apr 25 | May 16 | May 20 | May 23 | May 25 | May 27 | May 30 |
| Apr 26 | May 17 | May 21 | May 24 | May 26 | May 28 | May 31 |
| Apr 27 | May 18 | May 22 | May 25 | May 27 | May 29 | Jun 1 |
| Apr 28 | May 19 | May 23 | May 26 | May 28 | May 30 | Jun 2 |
| Apr 29 | May 20 | May 24 | May 27 | May 29 | May 31 | Jun 3 |
| Apr 30 | May 21 | May 25 | May 28 | May 30 | Jun 1 | Jun 4 |
Periods often start a few days either side of an estimate. Every date here is an estimate from a typical cycle length. It is not birth control and it is not medical advice.
Log the first day of each period in Isla and it keeps the next estimate, a range and the calendar up to date on your iPhone. No account and no ads.
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