A typical coffee roasting machine

The size of such roasters varies by manufacturer and capacity. They can have measurements of around 135 cm (W) x 192 cm (H) x 125 cm (D), and require a footprint of 250 to 400 cm (W) x 300 cm (H) x 250 to 300 cm (D). To convert to imperial mesasurements, divide any number by 2.54.