Skip to main content
Skip to calculator

Pregnancy Calculator

Estimate Pregnancy Calculator with transparent formulas and readable defaults.

Inputs

Results

Results appear here after you calculate. Numbers use tabular formatting for easy scanning.

How this calculator works

Formulas

Details

Schedule / breakdown

Explanation

Formulas

Assumptions

Estimates only — not financial, medical, or legal advice. Report an issue

Use the CalcAtlas Pregnancy Calculator to explore inputs, view methodology notes, and export results when available.

Explanation

  • This health calculator produces a screening estimate from body measurements or activity inputs.
  • Results are computed from the values you entered using published formulas for this tool.
  • Key outputs — Gestational Age: 42 weeks 6 days; Days Since Lmp: 300; Estimated Due Date: 2026-09-07.
  • Review the formulas and assumptions below before using these figures for decisions.

Formulas

  • Gestational age from LMP; 280-day EDD.

Assumptions & limitations

  • Outputs are screening estimates for general education, not a diagnosis or treatment plan.
  • Individual medical advice requires a licensed clinician.
  • Not medical advice; do not use as a diagnosis.
CalcAtlas methodology

This health calculator produces a screening estimate from body measurements or activity inputs. Results are computed from the values you entered using published formulas for this tool. Key outputs — Gestational Age: 42 weeks 6 days; Days Since Lmp: 300; Estimated Due Date: 2026-09-07. Review the formulas and assumptions below before using these figures for decisions.

Gestational age from LMP; 280-day EDD.

Outputs are screening estimates for general education, not a diagnosis or treatment plan. Individual medical advice requires a licensed clinician. Not medical advice; do not use as a diagnosis.