Take Action

Know your number. Then shrink it.

This quick calculator covers three everyday sources only - home electricity, cooking gas (LPG) and petrol. Estimate that slice of your footprint in 30 seconds, then pick pledges to shrink it. Food, shopping and travel add more on top - the full list of sources is at the bottom.

30-second estimate6 pledges5-question quiz

One planet, one orbit, one small leaf - the pledge wall below is how visitors add their own promise.

Carbon Footprint Calculator

Rough home estimate - electricity, cooking gas and petrol. Move the sliders.

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tonnes CO2 per year (household)
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tonnes per person per year

Factors: electricity 0.675 kg CO2/unit (CEA Baseline Database v22.0, FY 2025-26 Indian grid average); LPG about 3.0 kg CO2 per kg; petrol about 2.3 kg CO2 per litre (IPCC 2006 Guidelines defaults). Covers only electricity, LPG and petrol - food, shopping and travel are not counted, so the real footprint is higher.

My Pledge Wall

Tap the pledges you take. Your browser remembers them on this device (that is JavaScript's localStorage).

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pledges taken

The 60-Second Quiz

Five questions straight from this site. Judges love these - so should you.

Press Start Quiz

Sources of the numbers

  • • E-waste: 62 million tonnes generated in 2022, 22.3% formally recycled - Global E-waste Monitor 2024 (UNITAR/ITU): ewastemonitor.info
  • • Rooftop solar: 1 kW makes about 4-5 units/day and needs about 10-12 m² of roof - NDMC rooftop solar FAQ and PIB, Government of India
  • • Grid CO2: 0.675 kg per unit, Indian grid weighted average FY 2025-26 - Central Electricity Authority, CO2 Baseline Database v22.0 (August 2026): cea.nic.in
  • • Goa rainfall: about 3,000 mm in an average year - Goa/Panjim long-term climate normals (JMA/IMD station normals): ds.data.jma.go.jp
  • • Water need: about 135 litres per person per day - Government of India (CPHEEO) water supply guidelines
  • • Fuel factors: petrol about 2.3 kg CO2/litre, LPG about 3.0 kg CO2/kg - IPCC 2006 Guidelines default factors: ipcc-nggip.iges.or.jp