Health & fitness
Due date calculator
Estimate a due date from the first day of the last period.
Let’s run the numbers
USDEnter your values, then calculate.
◇ Calculated on your device. No account needed.
THE NUMBERS, MADE CLEARInstant calculation
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Your answer starts here
Check your inputs and select Calculate.
Assumes a 28-day cycle. This is an estimate; clinical assessment takes precedence.
Formula & assumptions
Estimated due date = LMP + 280 days
Assumes a 28-day cycle. This is an estimate; clinical assessment takes precedence.