Bike Cadence and Speed Calculator

Cadence is the rate at which a cyclist turns the pedals, measured in revolutions per minute (RPM). Most recreational cyclists sit between 60–80 RPM, while experienced and competitive cyclists often target 90–100 RPM or higher. A higher cadence reduces muscular strain and improves cardiovascular efficiency over long rides.

You can estimate cadence with just a watch or timer. Count how many times one leg completes a full pedal revolution in 10 seconds and multiply by 6, or count for 15 seconds and multiply by 4. Counting for a full 60 seconds gives the most accurate result but any of these methods provides a useful rough figure.

The formula is: Speed = π × (rim_diameter + 2 × tire_width) × (chainring_teeth / cog_teeth) × cadence. The wheel circumference is derived from the rim and tire measurements, the gear ratio from chainring to cog teeth, and cadence converts pedal revolutions into distance per minute, which is then converted to km/h or mph.

Meters of development (also called rollout) is the distance your bike travels in one full pedal revolution. It is calculated as wheel circumference multiplied by the gear ratio (chainring ÷ cog). A higher meters-of-development value means each pedal stroke covers more ground, which suits higher speeds but requires more effort.

The gear ratio is the number of chainring teeth divided by the number of cog (rear sprocket) teeth. A higher ratio (e.g., 50/11) means the rear wheel turns more times per pedal revolution, resulting in higher speeds at the same cadence. A lower ratio (e.g., 34/28) makes pedaling easier and is better suited to climbing hills.

Together, rim size and tire width determine your wheel's effective diameter, which sets how far the bike travels per wheel revolution. A larger rim or wider tire increases the circumference, so the bike covers more ground per pedal stroke. Standard road bike rims are 622 mm (700C) with tires typically 23–32 mm wide.

Research and professional coaching generally recommend 85–100 RPM for efficient road cycling. Cadences below 60 RPM place high torque on joints and muscles, increasing fatigue. Beginners often start around 70–80 RPM and gradually increase as their cardiovascular fitness improves. The ideal cadence varies by terrain, fitness level, and riding style.

Yes — the calculator works for any single-gear combination, including mountain bikes and fixed-gear (fixie) bikes. For mountain bikes, use the appropriate rim size (e.g., 584 mm for 27.5" wheels or 622 mm for 29") and your chosen tire width. For fixies, just enter your single chainring and cog values.