Expert Guide

Babu

Utility Calculators

Ladder Length & Safety Angle

Quality Inspector

Kaka

Find required ladder for safe work.

📐 Formula & Method

Uses the 4:1 safety rule (approx 75 degrees). Ground = Height / 4. Ladder = √[H² + G²].

Ladder = √[H² + (H/4)²]

📋 Worked Example

3m vertical height:
• Ground Distance = 0.75m
• Ladder Length ≈ 3.1m (add 1m for reach)

❓ Frequently Asked Questions

What is the 4:1 rule?

For every 4 feet of vertical height, the base of the ladder should be 1 foot away from the wall for maximum stability.