Pregnancy Calculators & Tools

From the first positive test to the first contraction, these pregnancy calculators and trackers give you clear answers and real dates. The Due Date Calculator works from your last period, conception date, IVF transfer or dating scan, then lists every key appointment, from screening and the anomaly scan to the glucose test and the full-term window, and adds them to your phone calendar in one tap. Save it as your pregnancy and the Trimester Progress Tracker becomes your daily dashboard, with your baby's size, what to expect this week and a checklist for each trimester.

The Pregnancy Weight Gain Calculator and Weight Tracker use the Institute of Medicine guidelines to show a healthy range for your starting BMI, for one baby or twins. In the third trimester, the Kick Count Tracker helps you learn your baby's normal pattern of movements, and when labour starts the Contraction Timer gives you one big button, a 5-1-1 alert and a summary you can send to your hospital.

Every tool is free, needs no sign-up and keeps your information on your own device. They give general estimates only. Always follow the advice of your doctor or midwife, and contact your maternity unit straight away if you're worried about your baby's movements or yourself. If you're booked at KKH and 22 weeks or more, go straight to the Delivery Suite for leaking fluid, bleeding or signs of labour.

Enter your due date once and every pregnancy tool fills itself in. Download PDFs to bring to appointments, add milestones to your calendar, and switch on dark mode for late-night checks.