Population from Quadrats Calculator
🌍 Ecology. Use the Population from quadrats formula to find estimated population, mean number per quadrat, total area, quadrat area: pick the value you want, type the others, and the answer updates as you go.
Pick the ○ next to the value you want to find, fill in the others, and it solves as you type.
What each letter means
| Quantity | Unit |
|---|---|
| Estimated population | no unit |
| Mean number per quadrat | no unit |
| Total area | m² |
| Quadrat area | m² |
Worked example
Find the estimated population when Mean number per quadrat = 3, Total area = 500 m², Quadrat area = 0.25 m².
Using N = mean per quadrat × (total area)/(quadrat area): Estimated population = 6000.
Frequently asked questions
What is the formula for Population from quadrats?
N = mean per quadrat × (total area)/(quadrat area).
What do the letters stand for, and what units are used?
Estimated population, Mean number per quadrat, Total area in m², Quadrat area in m².
How do you calculate estimated population?
Put the values into N = mean per quadrat × (total area)/(quadrat area). For example, with Mean number per quadrat = 3, Total area = 500 m², Quadrat area = 0.25 m², estimated population = 6000.
Can I solve for a different value?
Yes. In the calculator above, pick the circle next to any value (estimated population, mean number per quadrat, total area, quadrat area) and fill in the others: it rearranges the formula for you.
