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Calculators
Rotation Speed VR from VS1
Calculates rotation speed VR (takeoff) from stall speed VS1: VR = 1.1 to 1.2 times VS1.
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Compute annual rent adjustment by IGP-M or IPCA accumulated in the last 12 months (manually configurable).
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Compute estimated due date (EDD), gestational age and trimester from the last menstrual period (LMP).
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Fertile Period Calculator
Compute fertile window and ovulation day from the first day of the last cycle and the average cycle length.