Live annual food CO₂e from weekly protein servings - diet presets, a protein intensity table, and a skip-one-beef line so the high-leverage swaps are obvious.
Illustrative serving factors plus a plant baseline. Not a recipe LCA, farm audit, or full lifestyle footprint.
By Ahmet C. Toplutaş·Site owner & editor · Environmental & food tools
Last updated May 21, 2026 · Reviewed May 21, 2026 · Planning estimates only - not tax, medical, or investment advice
01
Food climate math is lopsided. Per typical serving, beef and lamb sit far above poultry, and plant proteins sit lower still. Counting every vegetable gram rarely changes the annual total as much as changing how often ruminant meat shows up.
This page estimates annual food CO₂e from weekly servings of beef, poultry, dairy, and legumes, plus a light plant baseline for grains and produce. It is diet planning math - not a recipe LCA and not your whole lifestyle footprint.
Decision framing: “Which weekly servings dominate?” - not “am I allowed to eat meat?”
02
“Vegetarian” and “omnivore” are marketing words until you count portions. A cheese-heavy vegetarian week can approach a low-beef omnivore week. The panel presets set starting weekly counts; edit dairy explicitly so the label cannot bury the load.
Fractional servings are allowed (0.5 = every other week). That matches how people actually rotate cuts better than an all-or-nothing diet identity.
03
The intensity table shows kg CO₂e per serving across beef, lamb, pork, poultry, fish, dairy, eggs, tofu, and beans. Use it to pick a substitute before you rewrite your entire grocery list.
Factors are illustrative averages from published food-emission ranges. Farm system, waste, and transport still move the real plate.
04
The “skip 1 beef serving / week” line multiplies one beef serving by 52. That is the annual saving if that meal disappears permanently - usually replaced by something already near your plant baseline. It is the diet analogue of canceling one high-cost subscription: specific, measurable, reversible if you hate it.
05
A · Omnivore baseline. 2 beef + 4 poultry + 7 dairy + 2 bean servings/week → on the order of ~1.5–1.7 t CO₂e/year with the plant baseline. Tap Omnivore, then read the beef share in the verdict detail.
B · High meat. 5 beef servings/week push beef toward half or more of the food total. Use High meat, then check “skip 1 beef / week” - one cut still saves hundreds of kg/year.
C · Flexitarian. 0.5 beef + more legumes drops the annual total sharply without a full vegetarian label. Compare Flexitarian vs Vegetarian: dairy can keep the vegetarian line from being the lowest.
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Example: 2 beef × 6.5 = 13 kg/week from beef alone → 676 kg/year before poultry, dairy, legumes, and baseline.
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No. This page estimates food-related greenhouse gases from weekly protein and dairy servings plus a light plant baseline. Home energy, travel, and goods sit outside it - compare diets here, then use broader footprint tools for the rest.
Per serving, ruminant meat (especially beef and lamb) usually dwarfs plant proteins and most other foods. Counting weekly beef/poultry/dairy servings captures most of the diet lever without a full recipe inventory.
No. Factors are illustrative planning averages drawn from published food LCA ranges. Farming system, cut of meat, waste, and transport shift the real number. Use them to rank swaps, not for regulatory reporting.
Usually on average, but a cheese-heavy vegetarian week can approach a low-meat omnivore week. The panel lets you set dairy servings explicitly so the label does not hide the dairy load.
It multiplies one beef serving’s intensity by 52. That is the annual saving if you permanently drop one weekly beef meal and replace it with something already in your plant baseline - a concrete swap, not a personality change.
Offsets are optional and separate. Lowering high-intensity servings first is usually the clearer climate action. If you still offset, verify project quality elsewhere - this calculator stops at food math.
LIVE DIET CO₂e
Intensity ↓Diet pattern preset
Weekly servings (edit after a preset)
Protein-led estimate + plant baseline. Not a recipe LCA or full lifestyle footprint.
Annual food CO₂e (est.)
1.59 t
24 kg/week from tracked servings · 43% from beef
PROTEIN INTENSITY (kg CO₂e / serving)
| Food | Per serving |
|---|---|
| Beef serving | 6.5 kg |
| Lamb serving | 5.5 kg |
| Pork serving | 2.0 kg |
| Poultry serving | 1.2 kg |
| Fish serving | 1.5 kg |
| Dairy portion | 0.8 kg |
| Eggs (2) | 0.9 kg |
| Tofu serving | 0.4 kg |
| Beans / lentils | 0.2 kg |
Intensity ranks swaps. Weekly counts drive the annual total above.
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