38-45cm (18 - 15in) is the most comfortable seat height for modern lounge chairs/armchairs. The total height (including the backrest) can be anywhere from 70cm (27.5in) upwards. This depends more on the type of chair and support you are looking for. For example, a designer wing-back chair may be as high as 90cm (35.5in). Whereas a lower more contemporary accent chair may be closer to 60cm (23.5in). The Stellar Works QT Chair fits perfectly into these dimensions and makes for a very comfortable occasional chair.