Hunting & Fishing Calculators
Free tools for hunters and anglers. Calculate fish weight from field measurements, estimate game animal meat yield, and more.
Fish Weight Calculators by Species
Select any species below for a dedicated calculator page with species-specific formulas, reference tables, and fishing tips.
Game Animal Weight Calculators by Species
Select any species for a dedicated calculator with field dressed weight, hanging weight, and meat yield conversions.
About These Calculators
Our fish weight calculator uses the same length-girth formulas used by state fish and wildlife agencies and fisheries biologists across North America. The formula accounts for each species' unique body shape — elongated pike use a different divisor than deep-bodied bluegill. The standard formula is: Weight (lbs) = Length × Girth² ÷ Divisor, where measurements are in inches.
The game animal weight calculator uses conversion factors derived from wildlife management research. For white-tailed deer, field dressed weight is approximately 78% of live weight, and boneless meat yield is approximately 43% of live weight — meaning a 150-lb deer yields around 65 lbs of boneless meat. Elk, moose, and bear follow similar conversion ratios.
All calculators are completely free. No account required.