Use this calculator to approximately calculate the amount of heat in kilowatts needed to heat your room. This calculation is based on the stove burning wood or coal. If you require gas or oil heating divide the total by 2 for your required output. Different factors such as good insulation or open staircases may also influence the required output. If you have any questions please contact us. Measure in Meters Feet   Room Width Room Length Room Height Required Output = Kilowatts