Weight of Bass Sampled (grams)    
        Standard          
  Standard     Weight          
Length Weight   110% 100% 95% 90% 85% 80% 75%
(in.) (lbs.)                
10 0.5   250 227 215 204 193 181 170
10.5 0.6   304 276 262 249 235 221 207
11 0.7   339 308 293 278 262 247 231
11.5 0.8   389 354 336 318 301 283 265
12 0.9   449 408 388 367 347 327 306
12.5 1.0   509 463 440 416 393 370 347
13 1.1   579 526 500 474 447 421 395
13.5 1.3   653 594 565 535 505 475 446
14 1.5   734 667 633 600 567 533 500
14.5 1.6   818 744 707 670 632 595 558
15 1.8   913 830 789 747 706 664 623
15.5 2.0   1013 921 875 829 783 737 691
16 2.2   1123 1021 970 919 868 816 765
16.5 2.5   1238 1125 1069 1012 956 900 844
17 2.7   1362 1238 1176 1114 1053 991 929
17.5 3.0   1497 1361 1293 1225 1157 1089 1021
18 3.2   1637 1488 1413 1339 1265 1190 1116
18.5 3.5   1786 1624 1543 1461 1380 1299 1218
19 3.9   1942 1765 1676 1588 1500 1412 1323
19.5 4.2'   2026 1842 1750 1657 1565 1473 1381
20 4.5   2290 2082 1978 1874 1770 1666 1562
20.5 4.9   2475 2250 2137 2025 1912 1800 1687
21 5.3   2674 2431 2310 2188 2067 1945 1823
21.5 5.7   2884 2622 2491 2360 2229 2097 1966
22 6.2   3103 2821 2680 2539 2398 2257 2116
22.5 6.6   3333 3030 2879 2727 2576 2424 2273
23 7.1   3577 3252 3090 2927 2764 2602 2439
23.5 7.6   3827 3479 3305 3131 2957 2783 2609
24 8.1   4096 3724 3538 3352 3165 2979 2793
24.5 8.7   4376 3978 3779 3580 3381 3182 2984

Measure fish from tip of nose with mouth closed to the end of the tail (make sure to "pinch" the tail). To get an estimate of a specific bass, weigh (in grams) and measure (in inches), then using the table above look up the relative weight of the bass. For example: a bass was caught measuring 16" and weighed 945 grams. Looking at the chart this particular bass has a relative weight of approximately 92-93%. To get the exact relative weight of a bass, use the standard weight column (pounds or grams) from the table above to find the standard weight of the bass caught. Divide the actual weight of the bass caught by the standard weight and multiply by 100. This will give you the relative weight of the bass caught. Example: a 19" bass was caught weighing 3.6 pounds. Looking at the table above, the standard weight for a 19" is 4.2 pounds. 3.6/4.2 = 0.851 * 100= 85.7. The relative weight for this particular fish is 86%.
1 pound = 454 grams
1 ounce = 28.35 grams