Pregnancy and fertility calculators
10 tools matched to this goal.
Pregnancy Due Date Calculator
Estimated due date from your last period.
Conception Date Calculator
Work backwards from a due date to when you conceived.
Ovulation & Fertile Window Calculator
Predict ovulation day and your most fertile days.
Gestational Age Calculator
Weeks and days pregnant on any date.
Pregnancy Weight Gain Calculator
Recommended weight gain by week using IOM guidance.
Pregnancy Calorie Calculator
Extra daily calories needed by trimester.
Menstrual Cycle Length Calculator
Average cycle length, regularity and next period.
IVF Due Date Calculator
Due date from your embryo transfer date.
Breastfeeding Calorie Calculator
Calories and fluids needed while nursing.
Baby Corrected Age Calculator
Adjusted age for babies born early.
Other goals
- Lose weight
- Build muscle
- Eat better
- Get fitter
- Protect my heart
- Manage blood sugar
- Pregnancy & fertility
- Care for my child
- Sleep better
- Mental wellbeing
- Cut back on drink, smoke & caffeine
- Understand my lab results
Related guides
Pregnancy & Family
How Pregnancy Due Dates Are Calculated
Naegele’s rule, ultrasound dating and why only 4 percent of babies arrive on the day.
Pregnancy & FamilyOvulation and the Fertile Window
Timing intercourse in the six days before and on ovulation boosts chances.
Pregnancy & FamilyHealthy Weight Gain During Pregnancy
How much to gain depends on your pre-pregnancy BMI.