🧮 SmileUp tool
Carbon footprint calculator
See roughly how much your year adds up to—from travel, home electricity, food, and shopping. When you're done, we explain it in plain language—no jargon.
- One easy question at a time
- Travel, home, food, and shopping in one total
- We label what's from data vs. a rough guide
Rounded estimates to learn from—not a certified audit. Soon we'll connect this to missions in SmileUp.
📊 Live estimate
Your footprint
A few questions on travel, home energy, food, and spending—then a yearly total you can read at a glance.
Step 1 of 9
Where do you live?
We use this to estimate emissions from the electricity you use at home.
Estimated annual total
5.37
tonnes CO₂e
When you’re ready, tap Show my footprint for your total and a short breakdown.
How we calculate your estimate
Simple idea: emissions ≈ what you do × a factor. Tap a topic—or watch the slides—to see what depends on your answers.
Where the numbers come from
Published references include the UK government conversion factors (travel) and EEA electricity intensity by country. Diet and shopping use simplified bands—we label them clearly in your results as rough guides.
Want help lowering your footprint?
Join the waitlist for missions, habits, and friends who help you keep going—so caring about climate turns into steady action, not a one-off score.