Carbolt makes carbon real. Browse food, water, and fuel choices and see honest CO₂ estimates next to them — not guilt trips, just numbers. 600 installs and counting — people making slightly better choices daily.
Nobody changes habits from being scolded. Carbolt just shows the math.
Real estimates for everyday choices across food, water, and fuel — grounded in published emission factors.
It's in your browser, where the decisions happen — not in a separate app you'll open twice.
Carbolt never tells you what to do. It just makes the invisible visible, then gets out of the way.
Install once. See numbers forever.
Add it to your browser in one click.
Shop and browse like normal. Estimates appear next to choices.
See the numbers, make your own call. That's it.
Join 600 people making their footprint visible.
Get the extension