Environmental Tools — Carbon Footprint, Solar

Carbon Footprint Calculator

Estimate your annual CO₂ emissions from transport, energy, diet and lifestyle

Fill in your annual estimates — leave 0 for items that don't apply.

🚗 Car travel (km/year)

✈️ Flights (hours/year total)

⚡ Electricity (kWh/month)

🔥 Natural Gas (m³/month)

🥩 Diet Type

🛍️ Shopping (clothes/electronics) — items/year

Annual CO₂ Emissions

—

🚗 Transport—

✈️ Aviation—

⚡ Home Energy—

🥩 Diet—

🛍️ Consumer Goods—

vs World Average (4t)—

Trees to Offset—

Solar Panel ROI Calculator

Calculate payback period, savings and CO₂ reduction from going solar

System Size (kW)

Installation Cost ($)

Government Subsidy / Rebate ($)

Daily Peak Sun Hours

4.5h

Electricity Rate (¢/kWh)

Annual Rate Increase (%)

Feed-In Tariff (¢/kWh exported, 0 if none)

Payback Period

—

Net System Cost—

Annual Generation—

Annual Savings—

25-Year Savings—

25-Year ROI—

CO₂ Saved/Year—

🌞 Note: Solar output varies by location, panel orientation and shading. Add battery storage to increase self-consumption and savings.

EV vs Petrol Cost Comparison

Compare lifetime costs, fuel savings and CO₂ reduction of electric vs petrol cars

⚡ Electric Vehicle

EV Price ($)

Range per charge (km)

Electricity cost (¢/kWh)

kWh per 100km

⛽ Petrol Car

Petrol Car Price ($)

Fuel efficiency (L/100km)

Petrol price ($/L)

Annual maintenance ($)

Annual Km Driven

Years of Ownership

EV Savings Over Period

—

EV Fuel Cost/Year—

Petrol Fuel Cost/Year—

Annual Fuel Saving—

EV Total Cost—

Petrol Total Cost—

Break-even Point—

CO₂ Saved over Period—

Home Energy Bill Calculator

Estimate your monthly electricity and gas costs by appliance usage

Electricity Rate (¢/kWh)

Gas Rate ($/m³ or $/therm)

Monthly Appliance Usage:

AC / Heating (hrs/day)

AC Power (kW)

Water Heater (hrs/day)

Fridge (always on — kW)

Washing machine (loads/week)

Lighting (hrs/day)

TV/Electronics (hrs/day)

EV Charging (kWh/month)

Est. Monthly Bill

—

Electricity Usage—

Electricity Cost—

Largest Consumer—

Annual Bill—

Cost per Day—

Avg Household (UK/AU)~$120–160/mo

Water Footprint Calculator

Estimate your total daily and annual water consumption (direct + virtual)

Shower Duration (min/day)

Bath (times/week)

Toilet Flushes/day

Dishwasher (runs/week)

Laundry loads/week

Garden watering (min/day)

Diet

Daily Water Footprint

—

Direct Use (litres/day)—

Virtual (food) per day—

Annual Total—

vs Global Average (3800L/d)—

Swimming Pools/Year—

💧 Biggest impact: Diet choice is the #1 water saver. Reducing beef consumption by 1 meal/week saves ~1,800 litres.

Recycling Impact Calculator

Measure the environmental benefit of your monthly recycling efforts

Enter monthly recycling amounts:

📄 Paper & Cardboard (kg/month)

🥫 Aluminium & Steel (kg/month)

🍶 Glass (kg/month)

🧴 Plastic (kg/month)

📺 Electronics/E-waste (kg/year)

🍂 Composting (kg/month)

CO₂ Saved Per Year

—

Paper CO₂ Saved—

Metal CO₂ Saved—

Glass CO₂ Saved—

Plastic CO₂ Saved—

Energy Saved (kWh/yr)—

Equivalent Trees Planted—

Tree Planting Carbon Impact

Calculate how many trees you need to plant to offset your carbon footprint

Your Annual CO₂ Footprint (tonnes)

Tree Species / Growth Rate

Number of Trees You Can Plant

Land Available (m²)

Donation Budget for Tree Planting ($)

Trees to Fully Offset

—

CO₂ per Tree/Year—

Your Trees Annual Absorption—

% of Footprint Offset—

Full Offset in Years—

Land Capacity (trees)—

Budget Trees (@ $0.50/tree)—

🌳 One tree absorbs ~21 kg CO₂/year on average over its lifetime. It takes 40–100 years to fully mature. Reducing emissions is more effective than planting alone.

Green Travel Emissions Comparison

Compare CO₂ emissions for the same journey by different transport modes

Journey Distance (km)

Number of Passengers

Number of Return Trips per Year

Primary Mode (current)

Green Alternative

Annual CO₂ Saving

—

Current Mode (per trip)—

Green Alternative (per trip)—

Saving per Trip—

Annual Trips—

Annual CO₂ Saving—

Trees Equivalent—