Use this guide to answer your most common ladder questions — from OSHA-compliant angles to choosing the right ladder for your home or job site. Need to run the math fast? Try our free ladder height calculator.
You can calculate your ladder length using the 4-to-1 rule: for every 4 feet of height, the ladder base should be 1 foot away from the wall. Use our ladder calculator to instantly determine the proper extension ladder length and safe angle for your project.
The OSHA-recommended angle is 75.5°. This ensures proper ladder setup and minimizes the risk of slipping or tipping over. Our tool uses this OSHA standard to give you a safe base distance and ladder length.
Most two-story homes are 18–22 feet high. You'll typically need a 24 to 28 foot extension ladder to safely reach the roofline, depending on your setup. Always include 3 extra feet for safe standing clearance.
Extension ladders commonly range from 16 to 40 feet in length. Always subtract 3 feet to account for ladder overlap and safe reach zone.
This tool helps you instantly find the correct ladder size, setup angle, and base distance. It’s ideal for contractors, roofers, DIYers, and anyone who needs to meet OSHA guidelines or European safety rules.
Still unsure? Try our ladder height calculator to get exact measurements.
Looking for ladder reviews and professional gear recommendations? Visit FieldGearHQ.com