The invention relates to a method for balancing an elevator car (1) comprising a frame (2);a cabin box (3) mounted on the frame (2); and a plurality of elastic members (4a,4b,4c,4d), such as springs, in vertical direction between the frame (2) and the cabin box (3), via which elastic members (4a,4b,4c,4d) the cabin box (3) rests on the frame (2). The method comprises measuring vertical distance between the frame (2) and the cabin box (3) in several horizontally spaced apart locations with distance sensors (5a,5b,5c,5d); and adjusting weight distribution of the cabin box (3) by adding and/or removing weight elements (6) on the cabin box (3). The invention further relates to an arrangement for balancing an elevator car (1) wherein said method is implemented.