Pregnancy and Fertility Calculators
These calculators estimate the key dates of conception and pregnancy from the first day of your last period or a known date.
Dates are estimates. Your midwife or GP will confirm your due date at the dating scan.
Pregnancy Due Date CalculatorWork out an estimated due date from the first day of your last period, using the NHS method.Ovulation CalculatorEstimate your likely ovulation date and fertile window from the first day of your last period.Conception Date CalculatorWork backwards from a due date or the first day of your last period to find when conception probably happened.Pregnancy Weight Gain CalculatorSee the Institute of Medicine weight gain range for your pre-pregnancy BMI, singleton or twins.
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