Travel Green Commute Savings Calculator — How It Works

Calculates the cost and CO₂ savings from switching to a greener commute (biking, transit, or carpooling) instead of driving alone.

How it works

1. Enter your one-way commute distance in miles.
2. Enter how many days per week you commute.
3. Enter the estimated cost per mile of driving (fuel, maintenance, depreciation) and the cost per mile of your greener alternative (biking, transit, carpooling).
4. The tool calculates your weekly miles, the cost difference, and the CO₂ emissions avoided.

Formula

Weekly miles = Miles per day × Days per week
Weekly savings = Weekly miles × (Cost per mile by car − Cost per mile green)
CO₂ avoided = Weekly miles × 0.404 kg/mile × 52

Example

A 10-mile one-way commute, 5 days a week, switching from driving ($0.65/mile) to a greener option ($0.10/mile), saves about $27.50/week ($1,430/year) and avoids roughly 1,050 kg of CO₂ per year.

Notes

$0.65/mile is a common all-in estimate for driving costs, and 0.404 kg CO₂/mile is a typical passenger car emissions factor — adjust both to match your vehicle and local fuel prices for a more precise figure.

Try the Travel Green Commute Savings Calculator — instant results in your browser, no sign-up.

FAQ

Is this free?

Yes — the Travel Green Commute Savings Calculator runs entirely in your browser, no sign-up required.

Are these figures exact?

The calculator performs the math precisely from the numbers you enter, but real-world rates, emissions factors, and efficiency figures vary by location and equipment — treat results as planning estimates.

Related

• Travel Green Commute Savings Calculator
• Environment & Energy tools