Shrimp Pond Calculator

Shrimp harvest planning starts from how many post-larvae you stock and works forward to how many pounds walk out the gate at harvest. This calculator multiplies pond area by stocking density (post-larvae per square meter) to get total post-larvae stocked, applies your expected survival rate to estimate the count that actually reaches harvest, then multiplies that surviving count by your target individual harvest weight to get total harvest weight. Because those four inputs -- pond size, stocking density, survival rate, and target size -- all combine multiplicatively, each one moves total harvest weight in the same direction: raising any one of them while holding the others fixed increases the harvest. Count per pound, by contrast, depends only on target harvest size (larger individual shrimp mean fewer of them make up a pound), so it doesn't move when you adjust pond size, density, or survival rate.

Grow-out time is driven by target size and stocking density -- growth rate slows as ponds get more crowded in this model -- but not by pond size or survival rate, since those affect how many shrimp there are, not how fast each one grows. What this calculator doesn't account for: actual site-specific growth curves (temperature, salinity, and feed quality all shift real growth rates), disease pressure or mid-cycle mortality events beyond the flat survival rate you enter, water quality constraints that can cap achievable stocking density independent of the number entered, and the fixed 1.6 feed conversion ratio, which varies by feed brand, management practice, and pond system. Use it for early-stage production planning, not as a substitute for site-specific yield records.