# Bike Commute Carbon & Calorie Calculator Calculate calories burned and CO2 avoided by biking your commute instead of driving. --- - **Canonical URL:** https://dothecalculation.com/calculators/bike-commute-carbon-calorie-calculator - **Category:** Eco & Sustainability - **Publisher:** Do The Calculation (https://dothecalculation.com) - **Cost:** Free, no account or sign-up required - **Privacy:** Runs entirely in the browser; inputs are never sent to a server - **Methodology:** https://dothecalculation.com/methodology --- ## Bike Commute Carbon & Calorie Calculator Replace a car commute with a bike ride and get two numbers most calculators only give you one of: the CO2 you avoid, and the calories you actually burn getting there — both from your real distance, pace, and weight. - Calorie burn from the standard MET formula, not a flat per-mile guess - CO2 avoided uses EPA's real gasoline emission factor and your car's MPG - Three pace tiers so a leisurely ride isn't scored like a vigorous one ## Quick Answer — What Does Biking to Work Actually Add Up To? Calories burned cycling follow the standard MET (metabolic equivalent) formula: **calories per hour = MET value × body weight in kg**. A moderate pace (12-14 mph) has a MET value of about 8, so a 170 lb (77 kg) rider burns roughly **616 calories per hour** at that pace — about **47 calories per mile** at 13 mph. On the emissions side, EPA's gasoline combustion factor is **8,887 grams of CO2 per gallon burned**. Divide that by your car's MPG to get grams per mile avoided by biking instead. **Quick reference:** A 5-mile one-way commute (10 miles round trip), ridden 5 days a week at a moderate pace by a 170 lb rider whose car gets 25 mpg, burns about **123,400 calories per year** (roughly 35 lb of fat-equivalent energy, though real weight change depends on total diet, not just this) and avoids about **0.92 metric tons of CO2 per year** — similar in scale to about a fifth of a typical passenger vehicle's total annual emissions. ## How to Use This Calculator Enter your one-way commute distance in miles, how many days a week you'd ride it, your body weight, your riding pace (Leisurely 9-11 mph, Moderate 12-14 mph, or Vigorous 15-16 mph), and your car's fuel economy for the emissions comparison. **Worked example:** 5-mile one-way commute, 5 days/week, 170 lb rider, moderate pace (13 mph, MET 8), 25 mpg car. Round trip = **10 miles**. Weekly miles = 10 × 5 = **50 miles**; annual miles = 50 × 52 = **2,600 miles**. Weight in kg = 170 × 0.4536 = **77.1 kg**. Calories/hour = 8 × 77.1 = **616.6**. Hours per round trip = 10 ÷ 13 = **0.77 hours**. Calories per round trip = 616.6 × 0.77 = **474.5 calories**. Weekly calories = 474.5 × 5 = **2,372.6**; annual calories = **123,377**. CO2 avoided: 8,887 ÷ 25 = 355.5 g/mile × 2,600 miles ÷ 1,000,000 = **0.92 metric tons/year**. **A second example, shorter commute and leisurely pace:** 3-mile one-way commute, 3 days/week, 150 lb rider, leisurely pace (10 mph, MET 6), 30 mpg car. Round trip = **6 miles**. Weekly miles = 18; annual miles = **936**. Weight = 68 kg. Calories/hour = 6 × 68 = 408. Hours per round trip = 6 ÷ 10 = 0.6. Calories per round trip = 408 × 0.6 = **244.9**. Weekly calories = 734.8; annual = **38,211 calories**. CO2 avoided: 8,887 ÷ 30 = 296.2 g/mile × 936 miles ÷ 1,000,000 = **0.28 metric tons/year** — both numbers scale down with the shorter distance, fewer days, and gentler pace, as expected. ## The Formula This Calculator Uses **Round trip miles** = One-way distance × 2. **Annual miles** = Round trip miles × Days per week × 52. **Calories burned** uses the standard exercise-physiology MET formula: Calories/hour = MET value × Body weight (kg). Riding time per round trip = Round trip miles ÷ Pace speed (mph). Calories per round trip = Calories/hour × Riding time. This is scaled to weekly and annual totals the same way as the mileage. **CO2 avoided (metric tons/year)** = (8,887 g CO2/gallon ÷ Car MPG) × Annual miles ÷ 1,000,000 — EPA's published gasoline combustion emission factor, applied to the miles you're not driving by biking instead. **Pace tiers used**: Leisurely = 10 mph, MET 6. Moderate = 13 mph, MET 8. Vigorous = 15 mph, MET 10 — standard values from the Compendium of Physical Activities, the reference exercise scientists use to assign MET values to specific activities and intensities. ## Pairing This With an E-Bike, or With Your Full Carbon Picture If you're weighing a motor-assisted e-bike instead of a standard bike, the [e-bike vs car savings calculator](/calculators/ebike-vs-car-savings-calculator) covers the equivalent trip's cost and CO2 comparison — trading some calorie burn for less physical effort and a longer feasible commute distance. For the broader commute-mode decision beyond just biking, the [eco-commute-wfh calculator](/calculators/eco-commute-wfh-calculator) covers work-from-home and other alternatives, and the [public transit vs. driving calculator](/calculators/public-transit-vs-driving-calculator) runs the same cost-and-emissions comparison for bus or rail commutes on days biking isn't practical. This calculator's CO2 figure is one category among several in a full household emissions picture — the [carbon footprint calculator](/calculators/carbon-footprint-calculator) rolls driving, flights, home energy, and waste into one annual estimate if you want to see how commute changes move your total. ## What This Calculator Doesn't Account For MET-based calorie estimates are population averages, not a measurement of your specific metabolism — individual variation in fitness level, cycling efficiency, terrain, wind, and stop-and-go traffic can shift real calorie burn up or down from this estimate. Hills in particular can meaningfully increase calorie burn beyond what a flat-terrain MET value captures. This calculator compares your bike commute against your own car's real MPG, not a national average — a more efficient car narrows the CO2 gap, while a less efficient one widens it. It also doesn't account for weather-dependent ridership (most people don't bike every single week of the year in colder climates), so treat the annual figures as an estimate for a commute you ride consistently, not a guarantee. Finally, calorie burn is not a stand-alone weight-management number — actual weight change depends on total calorie intake versus total expenditure across your whole day, not commute exercise alone. This calculator estimates energy expenditure from cycling specifically, not a weight-loss outcome. ## Frequently asked questions ### How is the calorie burn calculated? Using the standard MET (metabolic equivalent) formula: calories per hour = MET value × body weight in kilograms. MET values (6/8/10 for leisurely/moderate/vigorous pace) come from the Compendium of Physical Activities, the standard reference for exercise intensity. ### Why does pace matter so much for the calorie number? A faster pace has both a higher MET value (more effort per hour) and covers the same distance in less time, but the MET increase outweighs the shorter duration — so a vigorous-pace ride burns more calories over the same distance than a leisurely one, not fewer. ### How is the CO2 avoided calculated? Using EPA's published emission factor of 8,887 grams of CO2 per gallon of gasoline burned, divided by your car's actual MPG to get grams avoided per mile, then multiplied by your annual bike-commute mileage. ### Does this account for hills or headwinds? No — the pace tiers assume flat terrain and calm conditions. Hills and headwinds increase real calorie burn beyond the flat-terrain MET estimate used here; treat the result as a baseline, not an upper bound. ### Will biking to work definitely help me lose weight? It burns real calories, but weight change depends on your total daily calorie balance, not exercise alone — some people unconsciously eat more to compensate for exercise calories burned. This calculator estimates energy expenditure from cycling specifically, not a weight-loss guarantee. ### How does this differ from the e-bike vs car savings calculator? That calculator covers a motor-assisted e-bike, where the motor does most of the propulsion work and the cost/CO2 comparison is the focus rather than calories burned. This calculator covers a standard, non-motorized bike, where the rider provides all the propulsion and calorie burn is a central output. ## Related concepts - **MET (Metabolic Equivalent of Task)** — A standardized unit of energy expenditure, where 1 MET equals resting metabolic rate. Activities are assigned MET values based on how many times more energy they require than resting. - **Compendium of Physical Activities** — The standard reference exercise scientists use to assign MET values to specific activities and intensities, including different cycling paces — the source of the pace-tier MET values used here. - **Gasoline combustion emission factor** — EPA's published figure of 8,887 grams of CO2 released per gallon of gasoline burned, the standard basis for converting driving mileage into an estimated carbon footprint. ## Related guides - [How to Use Do The Calculation Calculators: A Practical Step-by-Step Guide](https://dothecalculation.com/blog/site-guides/how-to-use-calculators) — Learn the fastest reliable workflow for using Do The Calculation calculators, reading results, checking formulas, and using save, print, share, and export actions correctly. - [Understanding Calculator Formulas: How DTC Turns Inputs into Results](https://dothecalculation.com/blog/site-guides/understanding-calculator-formulas) — Understand how Do The Calculation formulas are presented, what the explanation blocks mean, and how to verify calculator logic before using a result in a real decision. ## Related calculators - [Eco-Commute & Work-From-Home Savings Calculator](https://dothecalculation.com/calculators/eco-commute-wfh-calculator) — Project transit expenses, travel times, and carbon emissions saved by using public transit, carpooling, or working from home instead of driving. - [E-Bike vs Car Savings Calculator](https://dothecalculation.com/calculators/ebike-vs-car-savings-calculator) — Calculate your annual cost savings and CO2 avoided by replacing car miles with e-bike riding. - [Public Transit vs Driving Calculator](https://dothecalculation.com/calculators/public-transit-vs-driving-calculator) — Compare your commute cost and CO2 emissions between driving and taking the bus or rail. - [Food Waste Carbon & Financial Cost Calculator](https://dothecalculation.com/calculators/food-waste-impact-calculator) — Calculate the environmental and financial cost of discarded food and see potential carbon offsets from composting instead of throwing it away. - [Carbon Footprint Calculator](https://dothecalculation.com/calculators/carbon-footprint-calculator) — Estimate your annual carbon emissions from energy use, transportation, and waste to see your environmental impact and find ways to reduce it. - [Carbon Offset Cost Comparison Calculator](https://dothecalculation.com/calculators/carbon-offset-cost-comparison-calculator) — Compare the annual cost to offset your footprint across renewable energy, reforestation, and direct air capture credits. --- _This calculator provides educational estimates using standard exercise-physiology and EPA emissions formulas. It does not account for individual fitness variation, terrain, weather, or your full daily calorie balance. Consult a doctor before starting a new exercise routine._ --- _Source: [Do The Calculation](https://dothecalculation.com/calculators/bike-commute-carbon-calorie-calculator). Quote freely with attribution and a link to this page._