Birthday widgets

Free to put on any site: pick what a widget shows, copy its code and paste it where it should appear. The RareBirthday logo and links inside are optional; the credit line under the widget stays. Charts are free to use too.

How rare is your birthday?
The birthday paradox
Babies born today
When was I conceived?
Birthday heat map

How rare is your birthday?

Pick a date and see where it ranks among all 366, from US birth records.

Shows

TitleRareBirthday logoLink to the date's page

<iframe src="https://rarebirthday.com/embed/how-rare-is-my-birthday" title="How rare is your birthday?" width="100%" height="620" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Widget by <a href="https://rarebirthday.com/">RareBirthday</a></p>
<script>addEventListener("message",function(e){var d=e.data;if(e.origin!=="https://rarebirthday.com"||!d||d.rarebirthday!=="height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=d.height+"px"})})</script>

The birthday paradox

The chance that two people in a room share a birthday, on real births rather than equal days.

Shows

TitleRareBirthday logo

<iframe src="https://rarebirthday.com/embed/birthday-paradox" title="The birthday paradox" width="100%" height="510" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Widget by <a href="https://rarebirthday.com/birthday-paradox">RareBirthday</a></p>
<script>addEventListener("message",function(e){var d=e.data;if(e.origin!=="https://rarebirthday.com"||!d||d.rarebirthday!=="height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=d.height+"px"})})</script>

Babies born today

A live count of the babies born so far today in the United States.

Shows

TitleRareBirthday logo

<iframe src="https://rarebirthday.com/embed/babies-born-today" title="Babies born today" width="100%" height="400" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Widget by <a href="https://rarebirthday.com/how-many-people-are-born-every-day">RareBirthday</a></p>
<script>addEventListener("message",function(e){var d=e.data;if(e.origin!=="https://rarebirthday.com"||!d||d.rarebirthday!=="height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=d.height+"px"})})</script>

When was I conceived?

The likely date of conception from a birthday, 38 weeks back.

Shows

TitleRareBirthday logo

<iframe src="https://rarebirthday.com/embed/conception-calculator" title="When was I conceived?" width="100%" height="500" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Widget by <a href="https://rarebirthday.com/conception-calculator">RareBirthday</a></p>
<script>addEventListener("message",function(e){var d=e.data;if(e.origin!=="https://rarebirthday.com"||!d||d.rarebirthday!=="height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=d.height+"px"})})</script>

Birthday heat map

Every date of the year in one grid, for the United States or any of 26 other countries.

Opens on

Shows

TitleRareBirthday logoCountry menu

<iframe src="https://rarebirthday.com/embed/birthday-heatmap/united-states" title="Birthday heat map" width="100%" height="610" style="border:0;max-width:640px" loading="lazy"></iframe>
<p style="font-size:13px">Widget by <a href="https://rarebirthday.com/most-common-birthday">RareBirthday</a></p>
<script>addEventListener("message",function(e){var d=e.data;if(e.origin!=="https://rarebirthday.com"||!d||d.rarebirthday!=="height")return;document.querySelectorAll("iframe").forEach(function(f){if(f.contentWindow===e.source)f.style.height=d.height+"px"})})</script>