Is that a true dinner-plate bull? This bluegill length-to-weight chart shows the average weight for bluegill of each length, so you can size up your panfish at a glance — handy when you’re deciding which go in the bucket for the fry.
Bluegill length-to-weight chart
| Length | Average weight |
|---|---|
| 6″ | 0.16 lb |
| 7″ | 0.27 lb |
| 8″ | 0.42 lb |
| 9″ | 0.62 lb |
| 10″ | 0.89 lb |
| 11″ | 1.21 lb |
| 12″ | 1.62 lb |
These figures follow published In-Fisherman bluegill data for a fish in average condition — roughly half a pound at 8 inches and over a pound at 11 inches. Bluegill are deep-bodied, so a thick, healthy fish can beat the chart.
What’s an average bluegill — and what’s a trophy?
Most bluegill caught run 6–9 inches and well under a pound (often 4–10 oz). The widely cited trophy benchmark is 10 inches — and it takes a bluegill of about 10.5 inches to break the 1-pound mark, so a true 10-inch/1-lb “bull” is a genuinely big fish. The all-tackle record is a remarkable 4 lb 12 oz fish from Ketona Lake, Alabama, in 1950 — reportedly 15 inches long with a 18-inch girth, and one of the oldest records in the book.
Put a number on your exact fish (worked example)
Bluegill are round, deep-bodied fish, so girth adds up fast:
Weight (lb) = Length × Girth² ÷ 800
A 10-inch bluegill with a 9-inch girth comes out to 10 × 9 × 9 ÷ 800 = 1.0 lb — right at trophy weight, slightly over the 0.89 lb chart average because it’s a deep-bodied bull. Measure both and use the free fish weight calculator; details in how to estimate a fish’s weight.
Why two bluegill of the same length weigh differently
Body depth is everything with bluegill — a thick, healthy bull from a well-managed lake dramatically outweighs a stunted fish from an overcrowded pond of the same length. Pre-spawn fish are heaviest, and productive water grows deeper-bodied fish.
Where and when to find bigger bluegill
Bluegill hold in warm, quiet water — ponds, lakes, reservoirs, and slow backwaters — over sand, mud, or gravel with plenty of vegetation for cover, ideally 65–80°F. The best fast action comes late spring through summer when colonies fan out spawning beds in the shallows. ID tip: look for the solid black ear flap and a dark blotch at the rear of the soft dorsal fin.
Bluegill weight FAQ
How big is a 1-pound bluegill? About 10.5 inches — a genuine trophy for the species.
What’s a trophy bluegill? 10 inches is the classic benchmark; anything over a pound is a bull.
Why is my bluegill heavier than the chart? Deep-bodied fish from fertile water beat length-only averages. Measure girth with the calculator for a true number.
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