24Earth climate tool
Household Carbon Footprint Calculator
See where your household emissions come from—and which practical changes could make the biggest difference.
Start with the example values. Replace them with your household’s actual use for a better estimate. Enter zero where something does not apply.
Your estimated annual footprint
— kg CO2e
per household each year · — t CO2e
What drives your total
Your emissions breakdown
Country context
How you compare
—
The national figure is an economy-wide per-person benchmark. Your calculator covers home energy, road travel, flights, food, and waste, so use this comparison as context—not a like-for-like audit.
Your highest-impact opportunities
Where could you cut the most?
These independent scenarios are ranked using your answers. Savings are estimates and should not be added together without accounting for overlap.
Transparent by design
How this estimate works
The calculator converts each activity into annual kilograms of carbon-dioxide equivalent, then adds five categories. Values are rounded because a household calculator cannot capture every supplier, vehicle, route, or waste facility.
Calculation boundaries
Home energy uses grid electricity plus direct LPG and natural-gas combustion. Road travel uses average emissions per vehicle-kilometre; electric vehicles use 0.2051 kWh/km multiplied by the selected grid factor. Food uses lifecycle diet estimates. Flights include the recommended non-CO₂ uplift and route-distance adjustment. Waste starts with the EPA household baseline and subtracts estimated recycling savings.
Assumptions and limitations
- Electricity factors are rounded national or regional averages; a specific utility may be cleaner or more carbon-intensive.
- The global fallback is approximate and marked low confidence; official launch factors are available for Indonesia, the United States, the United Kingdom, Singapore, Australia, and Malaysia.
- Vehicle factors use average efficiency and do not model manufacturing.
- Flight bands use representative return distances rather than exact airports.
- Diet and waste have wider uncertainty than metered energy.
- Purchased goods, services, construction, and public infrastructure are outside the household total.
Sources and factor version
Factor set 2026.1, reviewed July 2026. Core references:
- US EPA Household Carbon Footprint Calculator and assumptions — category model and household framing
- PLN Climate-related Disclosure Report 2024 — Indonesia electricity intensity
- US EPA eGRID, Australian NGA Factors, Singapore EMA, and Malaysia Energy Commission — national and regional electricity factors
- UK Government GHG Conversion Factors 2026 — fuels, vehicles, grid electricity, and aviation
- Scarborough et al., Nature Food (2023) — diet-pattern lifecycle emissions
- US EPA WARM — waste and recycling model
- OECD Greenhouse Gas Footprint Indicators — 2022 national consumption-footprint references
