Cycling vs Driving Cost Calculator
Annual savings from cycling instead of driving.
Tally yearly savings from cycling vs driving for commuting — fuel, depreciation, and bike costs all factored at your commute distance.
What this tool does
This calculator models the annual financial difference between cycling and driving for part of your commute. It takes your total annual commute distance, estimates the cost of running a car per mile (fuel, maintenance, depreciation), and compares it against the amortised annual cost of bike ownership and upkeep. The result shows net annual savings by cycling a chosen percentage of your journeys instead of driving them all. The calculation is straightforward: it multiplies the miles you cycle by your car's per-mile cost, then subtracts your bike's annual running costs. This is useful for understanding how substituting some car trips with cycling affects household transport spending. The output assumes consistent driving costs and cycling patterns year to year, and doesn't account for indirect factors like time value, congestion, or non-financial benefits. Results are for illustration only.
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Formula Used
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Calculations or display — let us know.
Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Cycling vs driving saves both money and carbon. Typical car running cost 40-60p/mile all-in. Bike: 500-1,500 purchase spread over 5-7 years = 5-10p/mile. Savings per mile 30-50p. Over 4,000 commute miles/year: 1,200-2,000 saved.
How to use it
Input annual commute miles, car cost per mile, annual bike cost (purchase amortised + maintenance), and percentage of days cycling. The tool shows annual savings.
What the result means
Annual savings from cycling share of commutes. Plus health, carbon, often time benefits (no traffic). Many people cycle 50-80% of commutes, keeping car for bad weather.
Quick example
With annual commute miles of 4,000 and car cost per mile of 0.5 (plus bike annual cost of 300 and cycling of commutes of 60%), the result is 900.00. Change any figure and watch the output shift — it's often more useful to see the pattern than to memorise the formula.
Which inputs matter most
You enter Annual Commute Miles, Car Cost Per Mile, Bike Annual Cost, and Cycling % of Commutes. Two inputs usually tip the answer one way or the other. Identify which ones matter most by flipping each value past a round threshold and watching whether the option with the lower calculated total changes.
What's happening under the hood
Miles cycled × car cost per mile = savings. Minus bike annual cost = net. The formula is listed in full below. If the number looks off, you can retrace the calculation by hand — that's the point of showing the working.
Cost vs value in green choices
Sustainable options usually cost more upfront and less over time. This tool separates the two so the comparison is fair — looking at purchase price alone consistently makes the green option look worse than it is once lifetime costs are tallied.
What this doesn't capture
Carbon reduction, health benefits, and local air quality have real value the financial figure doesn't price. The calculation gives the money side honestly; for the full picture, note the non-financial benefits alongside.
Cycling 60 of your 4,000 miles annual miles instead of driving could save 900.00 annually.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
The calculator computes annual savings by multiplying the annual commute miles by the cycling percentage to determine miles cycled, then multiplying that figure by the car cost per mile to obtain gross savings from avoided driving. The bike annual cost—comprising maintenance, repairs, and replacement—is then subtracted to arrive at net savings. The model assumes a constant cost per mile for driving and treats cycling and driving as direct substitutes for the same journeys. It does not account for variations in car operating costs by vehicle type, seasonal maintenance fluctuations, or changes in cycling costs over time. Results represent a simplified comparison and do not model tax implications, insurance adjustments, or non-financial factors such as health or environmental impact.
References
Frequently Asked Questions
Is 50p/mile realistic?
Bike amortisation?
What about e-bike?
Health benefits?
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