What activities does the calculator cover?

Diet pattern, household electricity times grid intensity, natural gas, petrol and diesel cars, short-haul and long-haul passenger-km, public transit and landfilled mixed waste. Other goods and services are not included.

Are the emission factors official national values?

No. They are rounded teaching factors (for example 2.02 kg CO₂e per m³ of gas, 0.5 kg per kg of waste). Use official country factors for formal GHG reports.

Why might flight totals look lower than other tools?

Short-haul uses 0.15 kg and long-haul 0.11 kg CO₂e per passenger-km. Radiative forcing (often about 1.9×) is excluded and noted in the output.

How are results compared with climate targets?

The total in t CO₂e/yr is shown against the 4.7 t world average and the 2.3 t per-person 1.5 °C-aligned level, together with the largest category and its share.

Should I enter household or personal numbers?

Diet, car fuel, flights and transit should match the person. Electricity, gas and waste can be household totals or your share of them.

Elysia Tools

Navigation

Health

Carbon Footprint Calculator (Activity-Based)

Annual personal CO₂e from diet, energy, fuels, flights, transit, and waste with per-category breakdown and target comparisons.

Execution

Run this tool

Fill in the form, run the tool, and review the result in one place.

Prepared example runs

Click an example to fill the form automatically. File inputs still need an upload.

2 examples

Typical urban profile → 6.19 t CO₂e/yr (1.32× world average)

A medium-meat diet (2.0 t) with 2000 kWh on a world-average grid (880 kg), 300 m³ gas (606 kg), 600 L gasoline (1386 kg), one long-haul return trip (10000 pkm = 1100 kg), 3000 pkm transit (120 kg), and 200 kg waste (100 kg) totals 6.19 t CO₂e/yr — 1.32× the 4.7 t world average and 2.7× the 2.3 t Paris-aligned level. Diet is the single biggest lever at 32.3% of the total, with car fuel close behind (22.39%).

{"result":"Total 6.19 t CO₂e/yr across 7 categories. Largest: Diet 2 t (32.3%). vs world average 4.7 t (1.32×) and 1.5 °C target 2.3 t (2.69×).","metadata":{"totalTonnes":6.19,"worldAverageRatio":1.32,"categories":[{"label":"Diet","kg":2000},{"label":"Car fuel","kg":1386}]}}

Low-carbon lifestyle → 2.14 t CO₂e/yr, near the Paris level

A vegan diet (1.1 t) with 4000 kWh on a low-carbon grid (200 kg), no gas, no car, one shorter long-haul trip (5000 pkm = 550 kg), 6000 pkm transit (240 kg), and 100 kg waste (50 kg) totals 2.14 t CO₂e/yr — 46% of the world average and within 7% of the 2.3 t Paris-aligned level. Even here the vegan diet remains the largest single category (51.4%), followed by the long-haul flight (25.7%) — grid + diet + car-free choices carry the total, and the flight is what tips it over 2 t.

{"result":"Total 2.14 t CO₂e/yr across 5 categories. Largest: Diet 1.1 t (51.4%). vs world average 4.7 t (0.46×) and 1.5 °C target 2.3 t (0.93×).","metadata":{"totalTonnes":2.14,"worldAverageRatio":0.46,"categories":[{"label":"Diet","kg":1100},{"label":"Long-haul flights","kg":550}]}}

Inputs

Options are grouped so long tools stay easier to scan.

10 options

SettingsAdjust formats, ranges, numbers, and modes.10

Diet patternselectRequiredElectricity use (kWh/yr)numberRequiredHousehold or personal electricity consumption per year.Grid carbon intensityselectRequiredNatural gas use (m³/yr)numberRequiredHeating/cooking gas — factor 2.02 kg CO₂e per m³.Gasoline car use (L/yr)numberRequiredFuel burned in petrol cars — factor 2.31 kg CO₂e per litre.Diesel car use (L/yr)numberRequiredFuel burned in diesel cars — factor 2.68 kg CO₂e per litre.Short-haul flights (passenger-km/yr)numberRequiredDomestic/regional flying — factor 0.15 kg CO₂e per passenger-km, radiative forcing excluded.Long-haul flights (passenger-km/yr)numberRequiredIntercontinental flying — factor 0.11 kg CO₂e per passenger-km, radiative forcing excluded.Public transit (passenger-km/yr)numberRequiredBus and rail travel — factor 0.04 kg CO₂e per passenger-km.Mixed waste (kg/yr)numberRequiredLandfilled mixed household waste — factor 0.5 kg CO₂e per kg.

Result

Ready for a run

Run the tool to preview files, text, structured data, or streamed output here.

Samples

Carbon Footprint Calculator (Activity-Based)

Run this tool

Prepared example runs

Inputs

Result

Examples that match this tool

Continue with connected tools and hubs

Prepared example runs

Inputs

Result

Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Typical urban lifestyle versus world average

2. Low-carbon vegan, car-free profile near the 1.5 °C level

FAQ

Contentful Cloud-based CMS Samples

Carbon Samples

Android Image Processing Java Samples

Android Image Processing Kotlin Samples

Bioavailability Calculator (F = AUC_po · Dose_iv / AUC_iv · Dose_po)

Daily Calorie Needs Calculator

Drug Half-Life Concentration Calculator

Ecological Footprint & Biocapacity (Earth Overshoot Day)

Health Tools

Meditation, Sleep, and Relaxation Tools

Endurance Training Pace, Heart Rate, and Effort Tools

Nutrition, Body Composition, and Sleep Calculators