And the forty weeks themselves
Every week has its own page, with the real measurement, its own drawing, and its sources at the bottom.
Free, and free of you.
No sign-up, no email wall, no results page that asks for your date of birth first. These run in your browser and keep nothing.
Due date calculator
From a last period, a conception date, or a day-3 or day-5 IVF transfer — and it adjusts for a cycle that is not 28 days, which most calculators quietly do not.
Open itBaby size by week
All forty weeks in one chart, in centimetres and inches, with the measurement convention stated for each — and a drawing at every size.
Open it