Pregnancy Due Date
Estimate due date and current gestational age from LMP and cycle length. Free online calculator with formulas and step-by-step solutions.
Key formula
due date estimate from LMP and cycle timing
About this tool
Estimate due date and current gestational age from LMP and cycle length. Free online calculator with formulas and step-by-step solutions.
How to use this calculator
- Enter realistic personal values and double-check the chosen unit system before calculating.
- Use the result as a planning estimate, not as a diagnosis or guaranteed outcome.
- Compare the output with your goal, context, and any relevant professional guidance.
- Review the steps to understand how the estimate was produced from your inputs.