Toolkit
Tools
Free calculators and checklists — nothing to sign up for, and nothing you enter leaves your device.
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Due date calculator
Enter the first day of your last period for an estimated due date, how far along you are and your trimester.
Your result appears here
Estimated due date
—
—weeks
—trimester
—days to go
An estimate based on a 40-week pregnancy. Your midwife will confirm at the dating scan.
BMI calculator
Body mass index from your height and weight.
Your result appears here
Daily water intake
A sensible daily target based on your weight and how active you are.
Your result appears here
Daily calorie needs
Estimated energy needs using the Mifflin-St Jeor equation.
Your result appears here
Contraction timer
Press start as a contraction begins and stop when it ends. Each one is logged with the gap since the last.
If contractions last about a minute and come every five minutes for an hour, call your midwife or maternity unit.
Elapsed
00:00
Kit check
What do you still need?
Tick what you already have, then jump straight to the gaps.
Medical disclaimer. These tools give general estimates only and are not a diagnosis. Pregnancy changes what is normal for you, and none of these are suitable for children unless stated. Always speak to your GP, midwife, pharmacist or health visitor about your care.