Six gentle tools, one calm timeline
Due Date Calculator
Estimate your expected due date from the last menstrual period, an estimated conception date, or a known IVF embryo transfer date. Includes week-by-week timeline orientation and trimester markers.
Ovulation Calculator
Estimate ovulation day and the approximate fertile window for a given typical cycle length. Useful as a planning reference for conception awareness and cycle tracking orientation.
Pregnancy Weight Gain Calculator
Estimate healthy weight gain ranges by trimester based on your pre-pregnancy BMI category. A general reference aligned with standard prenatal guidelines — always discuss with your care team.
Conception Calculator
Work backwards from a desired due date or forward from a known conception date to estimate key fertility and pregnancy timeline milestones. A planning reference for family orientation.
Pregnancy Week Calculator
Track your current pregnancy week, trimester, and remaining time based on your due date or last menstrual period. A simple orientation tool for milestone awareness.
Fertility Window Calculator
Estimate your most fertile days within your menstrual cycle based on cycle length. A general planning reference for conception awareness and cycle tracking.
Pregnancy math, compared
Short reads for the questions that come up most.
BMR vs TDEE
Resting calorie baseline vs total daily energy expenditure. The foundation and the full picture of your daily energy budget — a helpful reference for understanding energy needs.
Read CompareCalorie Deficit vs Maintenance
When to cut, when to hold. The effects of eating below your TDEE versus at your TDEE for weight loss, muscle gain, and health — a reference for understanding weight management.
ReadA reference point, not a fixed appointment
Pregnancy and fertility math is highly individual. Every calculator on this page is a population-level reference, not a personalized prediction. Your estimated due date is an orientation point to start a conversation with your prenatal team, not a fixed appointment on the calendar.
If a number from any free calculator causes you stress, write it down and bring it to your next prenatal visit. Your care team has access to information no calculator can see — prior pregnancies, lab results, and ultrasound measurements that tell the full story.