Cycling & Bike Training

Cycling performance calculators for FTP estimation, TSS, bike fit, tire pressure, gear ratios, climbing speed, and aerodynamics.

Matches are ranked by relevance. Use CtrlK anytime to search the full site.

Estimate your Functional Threshold Power (FTP) from common test protocols and calculate Coggan power training zones.

Calculate Training Stress Score from normalized power, ride duration, and FTP to quantify workout intensity and plan recovery.

Calculate ideal frame size, saddle height, reach, and handlebar drop from your body measurements for a comfortable and efficient cycling position.

Calculate optimal front and rear tire pressure based on rider weight, tire width, and terrain for the best balance of speed, grip, and comfort.

Calculate gear ratio, speed at any cadence, gear inches, and development from chainring, cog, and wheel size.

Calculate your climbing speed, VAM, and time to summit from gradient, distance, weight, and power output using physics-based modeling.

Estimate your CdA (drag area) from speed and power data. See how aerodynamic and rolling resistance forces split at different speeds.

Calculate carbohydrate, fluid, and sodium requirements per hour for endurance cycling rides based on duration, intensity, and body weight.

Calculate the correct spoke length for wheel building from hub flange dimensions, ERD, cross pattern, and spoke hole count.

Measure chain stretch to determine wear percentage, estimate remaining life, and plan replacement timing to protect your drivetrain.