Australia’s First
Carbon Index Calculator
Calculate your building’s embodied carbon using verified Australian data. Benchmark your project against industry standards and make informed decisions for a suitable built environment.
- First carbon index calculator built for Australia
- Verified Australian construction data
- Benchmark against 1000+ Australian projects
- Instant results with detailed breakdowns
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Enter your details to start calculating your project’s carbon footprint.
Make Invisible
Impact Visible
The Petra Carbon Index applies a structured calculation methodology that converts project cost inputs into embedded-carbon estimates using sector-specific benchmarks derived from extensive real-project datasets.
Verified by Slattery, the methodology is continually refined to reflect current market conditions, construction typologies and material trends, providing a consistent and defensible basis for comparative analysis and Scope 3 reporting across commercial building portfolios.