This simple to use application provides a three way calculation for establishing your LMP (Last Menstrual Period), your EDD (Estimated Delivery Date) or from your Gestational Age (weeks+days). Entering a figure in any field will calculate the remaining two. Useful for an obstetrician to replace a paper Obstetric Wheel or even as an expecting mum. Additional tools allow quick conversion of your baby weight from Kgs to Pounds or vice-versa with a BMI calculator to help you check your patients health.