Best due date plugins for WordPress
The most popular due date plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Clearblue® Due Date Calculator leads with 100+ active installs, ahead of Smart Pregnancy Calculator Suite (80+) and lamoud-Pregnancy-Calculator (70+). All 5 plugins tagged “due date” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
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Top 5 due date plugins
- 1.
Clearblue® Due Date CalculatorThe most installed due date plugin, with 100+ active installs. Only 3 reviews so far, last updated 4 years ago. Tested only up to WordPress 6.0.18.
- 2.
Smart Pregnancy Calculator Suite80+ active installs. No reviews yet, updated 4 months ago.
- 3.
lamoud-Pregnancy-Calculator70+ active installs. Only 2 reviews so far, last updated 3 years ago. Tested only up to WordPress 6.3.14.
- 4.
WP Pregnancy & Ovulation Calculator30+ active installs. Only 2 reviews so far, updated 2 weeks ago.
- 5.
HTS Labs Pregnancy CalculatorFewer than 10 active installs. No reviews yet, updated 4 months ago.
All 5 plugins tagged “due date”
Clearblue® Due Date Calculator
Up in the last 7 days:27#14,686by Clearblue4 years ago
Estimates the date a baby is due to be born by using the date of the first day of the woman’s last period and her average menstrual cycle length.
- Installs
- 100+
- Rating
- 3.3(3)
- Downloads
- 0/day
Smart Pregnancy Calculator Suite
Up in the last 7 days:15#17,742by hayyatapps4 months ago
A modern Pregnancy & Baby Planning Calculator Suite for traffic, leads and monetization.
- Installs
- 80+
- Rating
- –
- Downloads
- 0/day
lamoud-Pregnancy-Calculator
Down in the last 7 days:23#18,849by Lamoud3 years ago
lamoud-Pregnancy-Calculator
- Installs
- 70+
- Rating
- 5.0(2)
- Downloads
- 0/day
WP Pregnancy & Ovulation Calculator
Down in the last 7 days:2,290#24,907by THE BELOV19 days ago
For health, parenting & family planning websites: the most complete pregnancy and ovulation calculator plugin for WordPress!
- Installs
- 30+
- Rating
- 5.0(2)
- Downloads
- 0/day
HTS Labs Pregnancy Calculator
Down in the last 7 days:11,648#64,234by HTS Labs4 months ago
A professional LMP-based pregnancy due date calculator for WordPress with a polished frontend and streamlined admin settings.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day