All our calculators
Trying, expecting or in the thick of the early years, there's a tool for where you are.
Due Date
From your last period, conception or IVF transfer, plus how far along you are.
Ovulation & Fertility
Your fertile window, ovulation day and next few periods on a clear cycle view.
Conception Date
Work backwards from a due date or birth date to the likely conception window.
Map Out My Pregnancy
Your whole pregnancy, week by week, what's happening and what to do at each stage.
Early Years
Your baby's exact age and a stage-by-stage milestone guide through the early years.
Baby Shopping Timeline
What to buy and when, a tickable checklist built from your due date.
Private by design
Everything runs in your browser. We never store your dates or sell your data.
Gentle & judgement-free
Whatever your reason for checking, you'll find clear answers and kind words.
Evidence-informed
Our guidance reflects typical NHS pathways and links to trusted sources like the NHS and Tommy's.
From our guides
Gentle, evidence-informed reads for every stage.
Understanding your fertile window
How ovulation, the fertile window and the luteal phase really work, and how to time things, whichever way you want them to go.
Read the guide