width of bathtub
Small bathroom dimensions (shower, toilet and sink) 6ft x 6ft (1.8m x 1.8m) This is one of the standard layouts for small bathroom floor plans. Half bathroom dimensions (toilet and corner sink, pocket door) 5ft x 3ft (1.5m x 0.9m). The minimum you're allowed by code in the US is 5ft x 2.5ft (1.5m x 0.76m).