Pregnancy Calendar
Every pregnancy week with its dates and trimester.
These are estimates based on standard formulas, not medical advice.
| Week | Date | Trimester |
|---|---|---|
| 1 | May 1, 2026 – May 7, 2026 | 1 |
| 2 | May 8, 2026 – May 14, 2026 | 1 |
| 3 | May 15, 2026 – May 21, 2026 | 1 |
| 4 | May 22, 2026 – May 28, 2026 | 1 |
| 5 | May 29, 2026 – Jun 4, 2026 | 1 |
| 6 | Jun 5, 2026 – Jun 11, 2026 | 1 |
| 7 | Jun 12, 2026 – Jun 18, 2026 | 1 |
| 8 | Jun 19, 2026 – Jun 25, 2026 | 1 |
| 9 | Jun 26, 2026 – Jul 2, 2026 | 1 |
| 10 | Jul 3, 2026 – Jul 9, 2026 | 1 |
| 11 | Jul 10, 2026 – Jul 16, 2026 | 1 |
| 12 | Jul 17, 2026 – Jul 23, 2026 | 1 |
| 13 | Jul 24, 2026 – Jul 30, 2026 | 1 |
| 14 | Jul 31, 2026 – Aug 6, 2026 | 2 |
| 15 | Aug 7, 2026 – Aug 13, 2026 | 2 |
| 16 | Aug 14, 2026 – Aug 20, 2026 | 2 |
| 17 | Aug 21, 2026 – Aug 27, 2026 | 2 |
| 18 | Aug 28, 2026 – Sep 3, 2026 | 2 |
| 19 | Sep 4, 2026 – Sep 10, 2026 | 2 |
| 20 | Sep 11, 2026 – Sep 17, 2026 | 2 |
| 21 | Sep 18, 2026 – Sep 24, 2026 | 2 |
| 22 | Sep 25, 2026 – Oct 1, 2026 | 2 |
| 23 | Oct 2, 2026 – Oct 8, 2026 | 2 |
| 24 | Oct 9, 2026 – Oct 15, 2026 | 2 |
| 25 | Oct 16, 2026 – Oct 22, 2026 | 2 |
| 26 | Oct 23, 2026 – Oct 29, 2026 | 2 |
| 27 | Oct 30, 2026 – Nov 5, 2026 | 2 |
| 28 | Nov 6, 2026 – Nov 12, 2026 | 3 |
| 29 | Nov 13, 2026 – Nov 19, 2026 | 3 |
| 30 | Nov 20, 2026 – Nov 26, 2026 | 3 |
| 31 | Nov 27, 2026 – Dec 3, 2026 | 3 |
| 32 | Dec 4, 2026 – Dec 10, 2026 | 3 |
| 33 | Dec 11, 2026 – Dec 17, 2026 | 3 |
| 34 | Dec 18, 2026 – Dec 24, 2026 | 3 |
| 35 | Dec 25, 2026 – Dec 31, 2026 | 3 |
| 36 | Jan 1, 2027 – Jan 7, 2027 | 3 |
| 37 | Jan 8, 2027 – Jan 14, 2027 | 3 |
| 38 | Jan 15, 2027 – Jan 21, 2027 | 3 |
| 39 | Jan 22, 2027 – Jan 28, 2027 | 3 |
| 40 | Jan 29, 2027 – Feb 4, 2027 | 3 |
| 41 | Feb 5, 2027 – Feb 11, 2027 | 3 |
| 42 | Feb 12, 2027 – Feb 18, 2027 | 3 |
Runs entirely in your browser. Nothing is sent anywhere.
How it works
- 1Enter your values.
- 2See the result update instantly as you type.
- 3Change any value to compare scenarios.
About this tool
Pregnancy Calendar: Every pregnancy week with its dates and trimester. Type your numbers and the result is calculated instantly — no button to press, nothing to install. All math runs locally in your browser, so the values you enter are never sent anywhere.
Example
| Result | |
|---|---|
| Due date | February 5, 2027 |
| Current week | 24 (23+4) |
How do I use the Pregnancy Calendar?
Enter your values. See the result update instantly as you type. Change any value to compare scenarios.
Is the Pregnancy Calendar free?
Yes. It is completely free with no sign-up, no usage limits and no watermark.
Is my data sent to a server?
No. Everything is calculated locally in your browser. Nothing you enter is uploaded, logged or stored.
Does it work on my phone?
Yes. It works in any modern browser on Android, iPhone, iPad, Windows, Mac and Linux — no app needed.