The ideal volume of your board is generated based on your weight, ability, fitness level, experience and age. For example, older surfers and beginners tend to choose something with a higher volume, as this equates to more paddle power. The below chart will help you choose how much volume (Litres) you will want in your new surfboard. 

WEIGHT	BEGINNER	INTERMEDIATE	ADVANCED
35	32L	22L	18L
40	34L	23L	19L
45	37L	24L	20L
50	39L	25L	22L
55	42L	26L	23L
60	44L	27L	24L
65	46L	29L	25L
70	50L	31L	26L
75	53L	33L	27L
80	58L	35L	28L
85	60L	37L	30L
90	64L	43L	32L
95	67L	43L	33L
100	72L	45L	36L
105	75L	48L	40L
110	80L	50L	43L