How much altitude does a BASE jump parachute need to open?

A slider-down BASE canopy can open in as little as 80–120 ft (24–37 m) of altitude loss. A slider-up system requires 150–250 ft (46–76 m) plus reaction time from deployment. Minimum safe exit altitudes start at around 200 ft for low-level objects.

What is reaction time's role in BASE jump altitude calculations?

At a fall speed of 20–40 m/s, a 0.5-second hesitation before deployment costs 10–20 m of altitude. Reaction time plus gear activation time accounts for 25–40% of the total altitude budget on very low jumps.

BASE Jump Deployment Altitude Calculator

Calculate the minimum safe deployment altitude for a BASE jump from a given exit height, accounting for slider-up/slider-down configuration, reaction time, and canopy opening time.

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Frequently Asked Questions

How much altitude does a BASE jump parachute need to open?

What is reaction time's role in BASE jump altitude calculations?