VAM stands for velocita ascensionale media (Italian for average ascent speed). It measures how many vertical metres you climb per hour.

Recreational cyclists typically achieve 600-900 m/hr. Strong amateurs 1000-1400 m/hr. Professionals 1500-1800+ m/hr on major climbs.

How does VAM relate to power?

VAM is closely related to W/kg on steep gradients. On climbs above 7%, VAM is roughly proportional to power-to-weight ratio.

Why do professionals use VAM?

VAM allows comparison of climbing performances across different climbs. It was popularised by Dr Michele Ferrari and is now standard in professional cycling analysis.

BikeCalcs

VAM Calculator — Vertical Ascent Rate

Calculate vertical ascent metres per hour from climbing data.

Elevation Gain

Time

How We Calculate This

VAM Formula

VAM (m/hr) = Elevation Gain (m) / Time (hours)

VAM is most meaningful on climbs of at least 7% gradient and 20+ minutes duration.

Frequently Asked Questions

Related Calculators

Watts Per Kilo Calculator

Calculate your power-to-weight ratio in watts per kilogram.

Power to Speed Calculator

Estimate cycling speed from power output accounting for all resistances.

Climbing Power Calculator

Calculate the power needed to climb at a given speed and gradient.

Drag Calculator

Calculate aerodynamic drag force at different speeds.

CdA Calculator

Estimate your drag coefficient area from field test data.

Last updated: February 2026

All calculations are estimates. Always verify results and consult a professional bike fitter where appropriate.