Sustainable Fashion Score Calculator

This calculator rolls five separate sustainability inputs into one weighted score out of 10: materials (30% weight — the heaviest factor, since fiber choice drives most of a garment's lifecycle impact), production process (25%), transport distance (15%), packaging (15%), and end-of-life recyclability (15%). Four of those five are entered directly as 1–10 scores you assign based on the guidance in each field's help text (10 for organic/recycled materials or renewable-energy production, 1 for virgin synthetics or chemical-intensive processes). Transport is the exception — you enter a raw mileage figure, and the calculator converts it into a comparable 0–10 score by subtracting one point for every 1,000 miles shipped, so a 5,000-mile supply chain scores a 5 while anything over 10,000 miles floors out at zero.

Alongside the composite score, the calculator derives a separate carbon estimate in kg CO2 per garment: material and production carbon scale inversely with their respective input scores (a worse material or production score directly implies more estimated carbon), and transport carbon scales directly with the raw mileage figure rather than the capped transport score. The overall score also maps to a 1–5 sustainability grade using fixed thresholds, and the calculator flags whichever of the five factors scored lowest as your "weakest area" — the one place a sustainability initiative would move the needle most. Treat both the score and carbon estimate as directional comparisons between garments rather than certified lifecycle-assessment figures; they're built from user-supplied 1–10 judgments, not measured emissions data.