Ecological Footprint Calculator — Formula
## Ecological Footprint
Your ecological footprint is the total area of productive land and water needed to produce what you consume and absorb your waste, measured in global hectares (gha).
### Formula
**Total Footprint = Food + Housing + Transport + Goods (all in gha)**
**Earths Needed = Total Footprint / Biocapacity per person**
The world has about 1.6 gha of biocapacity per person. The average American uses about 8 gha, meaning if everyone lived like an American, we would need 5 Earths.
Your ecological footprint is the total area of productive land and water needed to produce what you consume and absorb your waste, measured in global hectares (gha).
### Formula
**Total Footprint = Food + Housing + Transport + Goods (all in gha)**
**Earths Needed = Total Footprint / Biocapacity per person**
The world has about 1.6 gha of biocapacity per person. The average American uses about 8 gha, meaning if everyone lived like an American, we would need 5 Earths.
Exemplo Resolvido
A person with moderate consumption across four categories.
- Total = 1.2 + 0.8 + 1.5 + 1.0 = 4.5 gha
- Earths needed = 4.5 / 1.6 = 2.8 Earths