Largemouth & Smallmouth Bass Weight/Length Conversion Chart

Length (inches)	Weight (pounds)	Length (inches)	Weight (pounds)
10	.63	17.5	3.35
10.5	.72	18	3.64
11	.83	18.5	3.95
11.5	.95	19	4.28
12	1.08	19.5	4.63
12.5	1.22	20	5
13	1.37	20.5	5.38
13.5	1.53	21	5.78
14	1.71	21.5	6.21
14.5	1.90	22	6.65
15	2.10	22.5	7.11
15.5	2.32	23	7.60
16	2.56	23.5	8.11
16.5	2.80	24	8.64
17	3.07	24.5	liar

The basic formula for calculating the weight of a largemouth bass or smallmouth bass is: length x length x length divided by 1600

Girth is also a factor and can vary the weight by as much as a half pound. However, the chart above will give you a fair estimate of the weight of the fish.

Remember... fishing for largemouth bass and smallmouth bass is a great sport. Make sure to obey local regulations. And when fishing for bass, live bait is great, but fishing with lures will ultimately make you a better fisherman. Plastic worms and Rapala crankbaits are some of the most popular fishing lures for catching bass.