Bench Height Checker
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter Values
Enter your values and press Calculate to see results.
How to use this calculator
- Enter the bench height and the burden.
- Press Calculate.
- Read the stiffness ratio and assessment.
How it works
Stiffness ratio = bench height ÷ burden. Below ~2 the bench is stiff and prone to backbreak and airblast; 3 or more is generally well-proportioned.
Worked example
10 m bench, 3 m burden. Ratio 3.3 — well-proportioned.
Frequently asked questions
Why does the stiffness ratio matter?
Low ratios concentrate energy and cause backbreak, airblast and poor fragmentation; the burden may need reducing.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.