Free pregnancy & baby health tools

Pregnancy & Baby Health Tools | EDD, BMI, Vaccination & Iron Calculator

Free maternal and child health tools from The Vatsalyam, including an estimated due date calculator, infant vaccination reminder, BMI calculator and iron requirement calculator.

Estimated Due Date (EDD) Calculator

Enter your Last Menstrual Period (LMP) or conception date. The default LMP calculation uses Naegele's rule.

Calculation method

Tip: an ultrasound-based dating assessment may be used by a healthcare professional when clinically appropriate.

BMI Calculator

Calculate adult BMI from weight and height. BMI is a screening measure and is not a pregnancy-specific weight-gain assessment.

Adult screening categories shown here use standard BMI cut-offs. Pregnancy care should use pregnancy-specific weight-gain guidance.

Iron Requirement Calculator (Ganzoni + FCM Dose)

Estimate total iron requirement using the displayed Ganzoni formula and show a simple ferric carboxymaltose (FCM) dose calculation.

Displayed formula: Iron need (mg) = Weight × (Target Hb − Actual Hb) × 2.4 + 500 mg (stores).

This is a calculation aid, not an IV-iron prescribing protocol. Actual iron product selection, total dose, maximum dose per administration, repeat dosing and contraindications must be determined from the applicable product information and by a qualified healthcare professional.

Vaccination Reminder — Infant Schedule

Generate an informational infant vaccination reminder schedule from the child's date of birth. Saved schedules remain in this browser's local storage.

Child's DOB

Saved schedules

Vaccination schedules can vary by country, national programme, vaccine availability, previous doses and clinical circumstances. Confirm the child's schedule with the relevant immunization programme and healthcare professional.

How these maternal & child health tools work

EDD Calculator: enter LMP or conception date; the tool calculates an estimated due date and displays the calculated interval.
Vaccination Reminder: enter the child's DOB, generate the schedule, save it locally and optionally request browser notifications.
BMI Calculator: enter weight and height to calculate BMI and an adult screening category.
Iron Calculator: use the displayed Ganzoni formula to estimate total iron need; the tool also displays a simple FCM session calculation based on the existing 1000 mg-per-session assumption.

These tools run in your browser. The calculator inputs and saved reminder schedules are not submitted to the server by these calculators. Newsletter submissions are handled separately by the site's newsletter form.

Frequently asked questions

How accurate is the EDD calculator?

EDD calculated from LMP is an estimate. Dating may be adjusted by a healthcare professional based on clinical assessment and ultrasound findings when appropriate.

Can I export reminders to a calendar?

Not yet. The current version stores vaccination schedules and reminders locally in the browser. Calendar export such as .ics can be added as a future feature.

Is this medical advice?

No. The Vatsalyam tools provide informational calculations and reminders. They do not replace assessment, diagnosis, vaccination records or individualized advice from a qualified healthcare professional.

Get pregnancy & baby health tips

Subscribe for practical maternal and child health updates.