PangPang Tools
한국어
By topic
Search tools

Enter a tool name or topic.

    Health & Body

    Pregnancy Weeks and Due Date Estimate

    Pregnancy Weeks and Due Date Estimate calculates values directly in your browser with clear fields, explanations and examples. Results use the specified formulas and assumptions, not private records or a live government eligibility determination. Standard last-menstrual-period convention: EDD = LMP + 280 days. Cycle variation and ultrasound dating may change the clinical due date.

    MAKE IT SIMPLE
    How the calculation works and limitations

    Standard last-menstrual-period convention: EDD = LMP + 280 days. Cycle variation and ultrasound dating may change the clinical due date.

    Result

    Worked examples

    LMP year: 2026, LMP month: 8, LMP day: 1, Reference year: 2026, Reference month: 10, Reference day: 24

    Gestational completed weeks: 12 weeks

    Illustrative default-input result. Standard last-menstrual-period convention: EDD = LMP + 280 days. Cycle variation and ultrasound dating may change the clinical due date.

    Questions & answers

    Is this an official determination or guaranteed result?

    No. Standard last-menstrual-period convention: EDD = LMP + 280 days. Cycle variation and ultrasound dating may change the clinical due date.

    Related tools

    Age calculator

    Completed years from a birth date

    Adult BMI and Reference Weight

    Adult BMI and Reference Weight — enter your own values to calculate clear numerical results, with labelled units, validation and scope limitations. BMI is a general screening ratio, not a diagnosis or weight prescription; individual context and age matter.