Pregnancy Tracking Calculators: Weeks and Due Dates

Follow your pregnancy timeline with calculators for gestational age, due dates, ultrasound measurements, and weekly weight gain. Use How Many Weeks Pregnant Are You? or the Gestational Age Calculator (AOG) to estimate how far along you are. The Pregnancy Due Date calculator helps you plan ahead, while Crown Rump Length (CRL) and Ultrasound Gestation Period offer estimates based on ultrasound measurements. Weekly Pregnancy Weight Gain helps you review changes over time. These tools are for expectant parents tracking milestones; your healthcare professional can help interpret results for your pregnancy.

Crown Rump Length (CRL)

Estimate crown–rump length from a gestational age of 6 to 14 weeks. Enter the number of weeks and choose millimeters or centimeters.

Gestational Age Calculator (AOG)

Estimate gestational age in weeks and days and an expected delivery date. Enter the first day of your last menstrual period and your usual cycle length.

Pregnancy Due Date

Enter the first day of your last menstrual period and your usual cycle length to estimate your due date and conception date.

Weekly Pregnancy Weight Gain

Estimate a pregnancy weight-gain range for your current week using your height, pre-pregnancy weight, current weight, and week of pregnancy.

Ultrasound Gestation Period

Enter an ultrasound crown–rump length of 3–84 mm to estimate gestational age in weeks and days. The result is an approximate pregnancy term, not a clinical dating assessment.

Contraction Timer

Log the start and end times of up to six contractions and instantly see how long each one lasts, how far apart they are, and whether they match the 5-1-1 labor pattern.

Find Your Due Date

Enter the first day of your last menstrual period to estimate your due date, conception date, fertility dates, and 12- and 27-week pregnancy milestones.

How Many Weeks Pregnant Are You?

Enter the first day of your last menstrual period and your usual cycle length to estimate how many weeks pregnant you are, your due date, and the time remaining until that date.

Kick Count

Track your baby's movements with the 'count to 10' method. Enter the time you started counting and each movement as you feel it — the calculator shows how many kicks you've recorded and how long it took to reach 10.

Milk Stash

Estimate how many days your frozen breast milk stash will last based on how much milk you have stored, how much your baby drinks per day, and how much you plan to pump.