Food · emission factor
The Carbon Footprint of Tofu
200 g CO₂e / 100g
Tofu carries a footprint of about 200 g CO₂e per 100 g, based on the global meta-analysis by Poore & Nemecek (2018, Science). That makes it one of the most climate-efficient protein sources available — roughly 15 times lower than beef (2,990 g) and about a third of chicken (620 g) per 100 g. For anyone looking to cut food emissions without cutting protein, tofu is one of the highest-impact swaps there is.
Why tofu's footprint is so low
Tofu is made by coagulating soy milk, and soybeans are remarkably efficient crops. As legumes, they fix much of their own nitrogen from the air, reducing the need for synthetic fertilizer — a major source of nitrous oxide, a greenhouse gas roughly 270 times more potent than CO₂ over a century. Crucially, tofu skips the animal stage entirely: instead of feeding soy to cattle or pigs and losing most of the calories to the animal's metabolism, the protein goes straight to your plate. There is no enteric methane, no manure management, and far less land required. Most of tofu's 200 g CO₂e per 100 g comes from farming inputs, processing the beans into curd, and packaging and transport.
Tofu vs. meat and dairy in context
Per 100 g, tofu's 200 g CO₂e compares with 2,990 g for beef, 2,420 g for lamb, 1,350 g for cheese, 1,220 g for pork, and 620 g for chicken. Even fish (550 g) and eggs (450 g) sit well above it. Livestock overall accounts for roughly 14–15% of global greenhouse gas emissions according to the FAO, driven largely by cattle methane and land-use change. Swapping one 100 g beef portion for tofu avoids about 2.8 kg CO₂e — comparable to driving roughly 12 km in a petrol car at 231 g/km. Only whole plant foods like beans (100 g) and vegetables (50 g) score meaningfully lower than tofu.
What about soy and deforestation?
Soy is often linked to Amazon deforestation, but the connection to tofu is weak: the vast majority of global soy — around three-quarters — is fed to livestock, not eaten directly by people. Eating tofu instead of meat actually reduces total soy demand, because animals convert feed protein inefficiently. Tofu sold in Europe and North America is also frequently made from soy grown in lower-risk regions such as Europe, the US, or Canada, and certified deforestation-free supply chains are increasingly common. Sourcing still matters, but on climate grounds tofu remains a clear win over animal protein regardless of origin.
How tofu compares
How to reduce this footprint
- ✓ Swap beef or lamb for tofu once a week — each 100 g substitution avoids nearly 2.8 kg CO₂e.
- ✓ Buy tofu with deforestation-free or European/North American soy sourcing when labels allow.
- ✓ Press and marinate firm tofu or bake it crispy so the swap sticks as a habit, not a chore.
- ✓ Log your meals in a tracker like Decarbonr to see how protein swaps add up over a month.
Frequently asked questions
Is tofu really better for the climate than chicken?
Yes. Tofu emits about 200 g CO₂e per 100 g versus 620 g for chicken — roughly a third of the footprint. Chicken is the lowest-impact common meat, but tofu still beats it clearly because no animal metabolism sits between the crop and your plate.
Doesn't tofu drive Amazon deforestation?
Mostly no. Around three-quarters of global soy is used as animal feed, so meat consumption is the main driver of soy expansion. Tofu for direct human consumption is a small share of demand and is often made from soy grown outside high-risk regions.
How much CO₂ do I save by replacing beef with tofu?
Per 100 g, the difference is about 2,790 g CO₂e (2,990 for beef vs. 200 for tofu). Replacing a weekly 200 g beef meal with tofu saves roughly 290 kg CO₂e per year — a meaningful cut from a single habit change.
Track this automatically
Decarbonr turns meals and journeys into one clear daily CO₂e number — on your iPhone, on-device, private by design.
Free trial · then subscription · AI scanning optional add-on
Sources & methodology: see Research & scientific references. Figures are averages used by the Decarbonr app; real-world values vary by production system, country, and occupancy.