# WebMD's pregnancy due date calculator

> WebMD offers a tool to estimate when your baby will arrive based on your last menstrual period.
- Title: WebMD's pregnancy due date calculator · WebMD | Shortify
- Summary: WebMD offers a tool to estimate when your baby will arrive based on your last menstrual period. WebMD provides a due date calculator that estimates delivery…
- Keywords: pregnancy, due date calculator, webmd, health tools, health, medicine, WebMD's, due, date, calculator
- Source: WebMD — https://webmd.com/baby/healthtool-due-date-calculator
- Read time: 1 min
- Topics: pregnancy, due date calculator, webmd, health tools, health, medicine
## WebMD's pregnancy calculator
WebMD offers a due date calculator to help pregnant people estimate when their baby will arrive. The tool asks for the first day of your last period.
## How the calculator works
You select the first day of your last period from a calendar, then click calculate to get your estimated due date. The tool uses a simple method to find the answer.
## The calculation assumes
The due date estimate assumes an average twenty eight day cycle. WebMD notes this assumption in a note below the calculator for users to understand.

> Due date estimate assumes an average 28-day cycle.
## Key takeaway

WebMD provides a due date calculator that estimates delivery by asking for the first day of your last period, assuming a twenty eight day cycle.