Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Pregnancy
Pregnancy Week Calculator
Tells you how many weeks pregnant you are from how many days have passed since your reference date (LMP, conception, or due date), with a cycle-length adjustment in days.
Fill in the required fields to see your result.
Pregnancy
Gestational Age Calculator
Converts the number of days since your last menstrual period into gestational age expressed as weeks and days. Use it at any point in pregnancy to know your exact stage for prenatal care, screenings, and milestone tracking.
Fill in the required fields to see your result.
Key differences
| Pregnancy Week Calculator | Gestational Age Calculator | |
|---|---|---|
| Category | Pregnancy | Pregnancy |
| Inputs required | 3 | 1 |
| Result | Current Pregnancy Week (weeks) | Gestational age (weeks) |
| What it does | Tells you how many weeks pregnant you are from how many days have passed since your reference date (LMP, conception, or due date), with a cycle-length adjustment in days. | Converts the number of days since your last menstrual period into gestational age expressed as weeks and days. Use it at any point in pregnancy to know your exact stage for prenatal care, screenings, and milestone tracking. |