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Pregnancy & Cycle calculators
Explore 7 free pregnancy & cycle calculators. Calculate in your browser with clear inputs, worked examples, and transparent methods.
7 calculators available
- Conception Calculator
Estimate likely conception and fertile-window dates from a period date, due date, or known birth date.
- Due Date Calculator
Estimate a pregnancy due date from last menstrual period, conception, or embryo-transfer date.
- Ovulation Calculator
Estimate ovulation date, fertile window, and next period from the last period and typical cycle length.
- Period Calculator
Project upcoming period and ovulation dates from a typical cycle and period length.
- Pregnancy Calculator
Estimate due date, conception window, trimester dates, and current gestational age from the last menstrual period.
- Pregnancy Conception Calculator
Estimate conception and fertile-window dates from a due date or last menstrual period.
- Pregnancy Weight Gain Calculator
Compare current pregnancy weight gain with Institute of Medicine reference ranges based on pre-pregnancy BMI.