OB Wheel

Easy to use Multi-function pregnancy calculator. Created by a board-certified OBGyn.

This app is also available as a web app at https://obwheel.cc

Calculate dates of pregnancy:

- Last menstrual period (LMP)

- Estimated date of conception

- Estimated gestational age (EGA)

- EGA obtained by ultrasound

- Dating by IVF Embryo transfer

- Calculate gestation by Crown-Rump length

- Estimated due date (EDD)

Additional features:

- "Time Machine" mode can calculate "How many weeks will patient be on xxxx date?" and "When will patient be xx weeks gestation?"

- Adjust length of cycle and luteal phase

- Store multiple patients for easy retrieval

- Include extra notes in patient data

- Export/import your saved data

- Full Help pages

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***IMPORTANT NOTE***

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This app calculates exactly 280 days (40 weeks) from LMP to EDC, and accordingly for any date in between. Please note that the paper/plastic wheels used by obstetricians or ultrasound technicians are inherently inaccurate. Different pregnancy wheels may vary by as much as 3 or 4 days. Please keep this in mind when comparing the values obtained here to those given in clinics/hospitals.

(see here: https://bit.ly/pregwheel)