Website Carbon Calculator
Page Size (KB)
Monthly Page Views
A website carbon calculator estimates the CO2 emissions generated by a web page per visit, based on data transferred. The internet accounts for approximately 3.7% of global carbon emissions.
- 1CO2 estimate = page size (KB) × 0.06g CO2/KB
- 2This accounts for data centre energy, network, and device power
- 3Annual emissions = CO2 per view × annual page views
- 4Green hosting can reduce emissions by 50–80%
500KB page, 10,000 views/month=~30g CO2/month = 0.36kg/year
3MB heavy page, 100,000 views=~180g CO2 per 100K views
Lean 100KB page=~6g CO2 per 1,000 views
| Page Size | CO2 per View | Per 1M Views/Year |
|---|---|---|
| 100 KB | 0.006g | 6kg |
| 300 KB | 0.018g | 18kg |
| 500 KB | 0.030g | 30kg |
| 1 MB | 0.060g | 60kg |
| 3 MB | 0.180g | 180kg |
| 5 MB | 0.300g | 300kg |
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