RC Hobby Calculators
Free online RC hobby calculators.
Calculate flight time, battery charge time, motor KV, gear ratios, and more for RC aircraft, cars, and drones.
LiPo Battery Charge Time Calculator
Calculate how long it takes to charge a LiPo battery at any charge rate. Find the safe 1C charge rate to maximize battery lifespan.
RC Aircraft Flight Time Calculator
Calculate estimated flight time for RC planes, quadcopters, and helicopters based on battery capacity, voltage, and motor current draw.