
organic cotton vs wool
Compare
The numbers
| The numbers | organic cotton | wool |
|---|---|---|
| Protein (g / 100 g) | 0 | 0 |
| Climate impact (kg CO₂e / kg) | 5.9 | 21 |
| Water use (L / kg) | 10000 | 17000 |
| Land use (m² / kg) | 3 | 280 |
| Saturated fat (g / 100 g) | 0 | 0 |
| Fibre (g / 100 g) | 0 | 0 |
The verdict
organic cotton is the better everyday choice. It uses less land and water and carries a smaller carbon footprint than wool, while covering the same role on the plate. If protein density is your priority, adjust portion size rather than going back to wool.
Sources: Poore & Nemecek (Science, 2018), FAO, USDA FoodData Central, Mekonnen & Hoekstra (2011).
In depth
The longer answer
Cotton and wool are two natural fibers often compared by consumers choosing between clothing, bedding, or yarn crafts. Cotton comes from the fluffy bolls of the cotton plant, while wool is sheared from sheep and other animals like goats or alpacas. People compare them to decide which is more comfortable, durable, or sustainable for their needs, especially when considering breathability, warmth, and environmental impact.
Nutritionally, neither is eaten, but their production footprints differ sharply. Cotton farming typically requires heavy irrigation, pesticides, and land, contributing to water scarcity and chemical runoff. Wool production involves grazing sheep, which emits methane and can cause overgrazing and soil degradation. However, wool is more durable and biodegradable, lasting years longer than cotton, which often degrades faster and sheds microplastics if blended with synthetics.
In real life, the choice depends on use and values. For warm-weather garments or lightweight bedding, cotton is breathable and easy to wash. Wool excels in cold climates, insulating even when wet, and resists odors, making it ideal for activewear or outerwear. For lower environmental impact, choose organic cotton or responsibly sourced wool, but prioritize longevity: a wool sweater worn for a decade beats five cotton tees discarded yearly.
At a glance
Quick facts
| Detail | What to know |
|---|---|
| Fiber source | Cotton from plant; wool from sheep |
| Water use | Cotton is very water-intensive |
| Biodegradability | Both are biodegradable |
| Durability | Wool lasts longer than cotton |
In practice
What this means for you
- Choose organic cotton for hot-weather basics like t-shirts or bed sheets.
- Opt for wool sweaters or socks in winter for warmth without bulk.
- Wash wool less often and air dry to extend its life and save energy.
- Avoid cotton-polyester blends if you want full biodegradability.
FAQ
Common questions
Which is better for the environment, cotton or wool?
Is cotton or wool more breathable?
Can wool be worn by people with sensitive skin?
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