Ladder Safe Length Calculator
Calculate the safe ladder length required to reach a specific height.
✓ Safety Standard: 4-to-1 Rule
↕ Vertical Wall Height (S)
feet
Top Angle (Tilt)
15.0°
10° (Steep)
14.5° (Ideal 4:1)
20° (Shallow)
Length (LADDER)
5.18ft
Required contact length
BASE DISTANCE
1.34ft
Distance from wall
Perfect Stability (Sweet Spot)
Excellent! This angle (~14.5°) perfectly matches the 4-to-1 safety rule for maximum stability.
✓