Sustainable Fashion Calculator

Your footprint is estimated across three life-cycle stages: production (manufacturing new garments), care (washing and drying), and disposal (end-of-life handling). Each stage uses emission factors based on fabric type, frequency of use, and behaviors like secondhand shopping or textile recycling. The result is expressed in kilograms of CO₂ equivalent (kg CO₂e) per year.

Conventional cotton is notoriously water-intensive, while synthetic fabrics like polyester and nylon are derived from fossil fuels and shed microplastics when washed. Wool has high greenhouse gas emissions due to methane from sheep. Lower-impact alternatives include organic cotton, linen, hemp, and recycled polyester — especially when certified by standards like GOTS or bluesign.

Yes — significantly. Buying a secondhand garment avoids the emissions generated during raw material extraction and manufacturing, which account for the majority of a garment's lifetime footprint. Shifting even 20–30% of your purchases to secondhand, vintage, or thrifted items can meaningfully reduce your annual fashion emissions.

Heating water is the biggest energy draw in home laundry. Washing at 30°C instead of 60°C can cut per-load emissions by up to 60%. Air-drying instead of using a tumble dryer saves a similar amount. Washing less frequently and with full loads further amplifies these savings.

Research suggests the average person in a high-income country buys 60–80 new garments per year. Sustainability advocates typically recommend staying below 30 new items annually, prioritising quality and longevity over quantity. Replacing fast fashion with durable, ethically produced pieces — or secondhand finds — is more impactful than any single change.

GOTS (Global Organic Textile Standard) certifies that fibers are organic and that the full supply chain meets environmental and social criteria. Fair Trade certification ensures fair wages and safe working conditions for garment workers. B Corp certification covers broader business sustainability. Prioritising brands with these credentials reduces the risk of greenwashing and supports genuinely lower-impact production.

The global fashion industry is responsible for around 8–10% of global CO₂ emissions. On a per-person basis, fashion accounts for roughly 1,000 kg CO₂e per year for someone in a high-income country, though estimates vary by consumption patterns. This calculator benchmarks your result against that 1,000 kg figure so you can see where you stand relative to the average.

Keeping clothes longer is the most impactful single action — doubling a garment's lifespan halves its annual footprint. After that, buying less overall, choosing secondhand first, and selecting low-impact fabrics all make a substantial difference. Washing in cold water and air-drying compounds the savings over time.