Example 1
- 2200 kcal
- 65% plants
- 20% beef in animal calories
2.16 kg CO₂e/day
What diet carbon footprint from 2200 kcal, 65% plants and 20% beef? 2.16 kg CO₂e/day. Three fields, not an app.
Diet carbon footprint
Type kcal, the plant share, and beef in animal calories. 2200, 65 and 20 give 2.16 kg CO₂e/day. 2000, 80 and 10 give 1.08 kg CO₂e/day. 2500, 40 and 40 give 6.15 kg CO₂e/day. Three fields, not a diet app.
Three fields. 2200 kcal, 65% plants and 20% beef give 2.16 kg CO₂e/day. Not a meal plan.
Results
Enter data and click Calculate.
How it works
Diet carbon footprint in this calculator is daily CO₂e from three fields. 2200 kcal, 65% plants and 20% beef in animal calories give 2.16 kg CO₂e/day. 2000, 80 and 10 give 1.08 kg CO₂e/day. 2500, 40 and 40 give 6.15 kg CO₂e/day. The /day suffix sits in the result.
The kcal field has a floor of 500. The plant share splits plant calories. The rest is animal calories. Beef is only a share of that rest. Factors in the code are 0.00035, 0.009 and 0.00045 kg CO₂e per kcal. The calculator does not read a plate or FAO.
2.16 kg CO₂e/day is not a national average. 1.08 kg CO₂e/day is not from an app. 6.15 kg CO₂e/day is 2500 kcal at 40% plants and 40% beef in the animal part.
Food water footprint next door counts litres per week, not CO₂e. Household CO₂ counts meters. Here the diet stays: 2200, 65 and 20 stay 2.16 kg CO₂e/day.
Type 2200, 65 and 20, then Calculate. A comma in 65.5 parses. Blank kcal still becomes 500. A three-number sketch, not a clinic.
2200, 65 and 20 give 2.16 kg CO₂e/day. 2000, 80 and 10 give 1.08 kg CO₂e/day. 2500, 40 and 40 give 6.15 kg CO₂e/day. Another beef share at 2200 changes 2.16.
Formula
plant kcal = kcal × plant% / 100. animal = kcal − plant. CO₂e/day = plant × 0.00035 + animal × (beef% × 0.009 + rest × 0.00045). kcal does not go below 500.
How to use
- Type daily kcal, for example 2200. The code floor is 500.
- Type plant share 65 and beef in animal calories 20.
- Click Calculate. The result is 2.16 kg CO₂e/day.
- 2000, 80 and 10 give 1.08 kg CO₂e/day. 2500, 40 and 40 give 6.15 kg CO₂e/day.
- Three fields and fixed factors, not a meal app.
2200 / 65 / 20 = 2.16 kg CO₂e/day
Three fields. 2200 kcal, 65% plants and 20% beef give 2.16 kg CO₂e/day. Not a meal plan.
- Diet
- Calories and shares, not a plate. 2200 at 65 and 20 leave 2.16 kg CO₂e/day.
- carbon
- The result unit is kg CO₂e/day. 2500, 40 and 40 leave 6.15 kg CO₂e/day.
- footprint
- Daily CO₂e. 2200, 65 and 20 stay 2.16 kg CO₂e/day. 2000, 80 and 10 give 1.08.
Examples
Example 2
- 2000 kcal
- 80% plants
- 10% beef
1.08 kg CO₂e/day
What footprint from 2000, 80 and 10? 1.08 kg CO₂e/day.
Example 3
- 2500 kcal
- 40% plants
- 40% beef
6.15 kg CO₂e/day
What footprint from 2500, 40 and 40? 6.15 kg CO₂e/day.
Related calculators
Common questions
What diet carbon footprint from 2200 kcal, 65% plants and 20% beef?
2.16 kg CO₂e/day. Three fields and fixed factors, not a meal plan.
How much at 2000, 80 and 10?
1.08 kg CO₂e/day. More plants and less beef lower the result.
How much at 2500, 40 and 40?
6.15 kg CO₂e/day. 2500 kcal, 40% plants, 40% beef in the animal part.
Is 2.16 kg CO₂e/day a national average?
No. Typed numbers and three factors in the code. The calculator does not read a survey.
Does blank kcal give zero?
No. The code lifts kcal to 500, so a blank does not leave zero.
How is this different from water footprint?
That card counts litres per week from product masses. Here daily CO₂e from kcal and shares.
Does a comma in 65.5 work?
Yes. 2200, 65.5 and 20 give a different result than 65.
Is the result a diet?
No. A result from three fields. A clinician and an LCA table sit outside this calculator.
Where do 0.00035 and 0.009 come from?
Constants per kcal in the code. You do not load them from a table on the page.
Knowledge sources
The factors on the page are a sketch. Below are EPA emissions terms, not a national inventory.
Page updated in 2026.