Predator-Prey Ratio Calculator

Predator-Prey Ratio Calculator: A Quick Population Balance Snapshot

The ratio of prey to predators is a simple, commonly cited descriptive statistic in wildlife ecology, giving a rough sense of how many prey animals are supporting each predator in a given population. This calculator computes that ratio directly.

The Formula

Ratio = Prey Population / Predator Population

Worked Example

A population survey counts 500 prey animals and 25 predators.

Ratio = 500 / 25 = 20:1

How to Use This Calculator

1. Enter the estimated prey population.
2. Enter the estimated predator population.
3. Click Calculate to get the prey-to-predator ratio.

Related Calculations

Use with the Logistic Population Growth Calculator to model how either population might change over time.