Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Pregnancy
Due Date Calculator
Calculates how many days remain until your estimated due date from how many days ago your last period (or conception) occurred, adjusting for cycle length or luteal phase.
Fill in the required fields to see your result.
Pregnancy
Due Date Calculator
Estimates how many days remain until your due date and your current pregnancy week from how many days ago your last period (or conception/ultrasound reference) was, plus cycle length and any ultrasound adjustment.
Fill in the required fields to see your result.
Key differences
| Due Date Calculator | Due Date Calculator | |
|---|---|---|
| Category | Pregnancy | Pregnancy |
| Inputs required | 4 | 4 |
| Result | Due Date Countdown | Due Date Countdown |
| What it does | Calculates how many days remain until your estimated due date from how many days ago your last period (or conception) occurred, adjusting for cycle length or luteal phase. | Estimates how many days remain until your due date and your current pregnancy week from how many days ago your last period (or conception/ultrasound reference) was, plus cycle length and any ultrasound adjustment. |