Expected Date of Delivery (EDD) Calculator

This tool calculates your expected date of delivery with our EDD calculator, based on reliable medical data. Perfect for expecting parents and healthcare professionals.

EDD Calculator

Full original guide (expanded)

Expected Date of Delivery (EDD) Calculator

This calculator helps expecting parents and healthcare professionals estimate the due date for a baby's birth. Simply enter the relevant information to calculate the expected delivery date.

Estimated Due Date:

Authoritative Data Source and Methodology

Data is sourced from reliable medical guidelines. All calculations are based on standard obstetric formulas.

The Formula Explained

The formula used for EDD calculation is:

EDD = LMP + 280 days

Glossary of Terms

  • LMP: Last Menstrual Period, the first day of your last period.
  • EDD: Estimated Due Date, the estimated date when the baby will be born.

Frequently Asked Questions (FAQ)

How accurate is the EDD?

The EDD is an estimate and actual delivery can vary by a couple of weeks.

What if I don't remember my LMP?

Your healthcare provider can estimate the EDD using ultrasound data.

Can the EDD change?

Yes, based on ultrasound findings and other factors.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Expected Date of Delivery (EDD) Calculator

This calculator helps expecting parents and healthcare professionals estimate the due date for a baby's birth. Simply enter the relevant information to calculate the expected delivery date.

EDD Calculator

Estimated Due Date:

Authoritative Data Source and Methodology

Data is sourced from reliable medical guidelines. All calculations are based on standard obstetric formulas.

The Formula Explained

The formula used for EDD calculation is:

EDD = LMP + 280 days

Glossary of Terms

  • LMP: Last Menstrual Period, the first day of your last period.
  • EDD: Estimated Due Date, the estimated date when the baby will be born.

Frequently Asked Questions (FAQ)

How accurate is the EDD?

The EDD is an estimate and actual delivery can vary by a couple of weeks.

What if I don't remember my LMP?

Your healthcare provider can estimate the EDD using ultrasound data.

Can the EDD change?

Yes, based on ultrasound findings and other factors.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn

Expected Date of Delivery (EDD) Calculator

This calculator helps expecting parents and healthcare professionals estimate the due date for a baby's birth. Simply enter the relevant information to calculate the expected delivery date.

EDD Calculator

Estimated Due Date:

Authoritative Data Source and Methodology

Data is sourced from reliable medical guidelines. All calculations are based on standard obstetric formulas.

The Formula Explained

The formula used for EDD calculation is:

EDD = LMP + 280 days

Glossary of Terms

  • LMP: Last Menstrual Period, the first day of your last period.
  • EDD: Estimated Due Date, the estimated date when the baby will be born.

Frequently Asked Questions (FAQ)

How accurate is the EDD?

The EDD is an estimate and actual delivery can vary by a couple of weeks.

What if I don't remember my LMP?

Your healthcare provider can estimate the EDD using ultrasound data.

Can the EDD change?

Yes, based on ultrasound findings and other factors.

Audit: Complete
Formula (LaTeX) + variables + units
This section shows the formulas used by the calculator engine, plus variable definitions and units.
Formula (extracted LaTeX)
\[','\]
','
Variables and units
  • T = property tax (annual or monthly depending on input) (currency)
Sources (authoritative):
Changelog
Version: 0.1.0-draft
Last code update: 2026-01-19
0.1.0-draft · 2026-01-19
  • Initial audit spec draft generated from HTML extraction (review required).
  • Verify formulas match the calculator engine and convert any text-only formulas to LaTeX.
  • Confirm sources are authoritative and relevant to the calculator methodology.
Verified by Ugo Candido on 2026-01-19
Profile · LinkedIn
Formulas

(Formulas preserved from original page content, if present.)

Citations

(Citations preserved from original page content, if present.)

Changelog
  • 0.1.0-draft — (auto-wrapped): Canonical shell enforced without modifying calculator logic.
Version 0.1.0-draft