Construction

SAG Calculator

Surface sag from radius.

Results

Sag
—
ft
Sag (inches)
—
in

About the SAG Calculator

This calculator helps you quickly compute results with precision. Simply enter your values and get instant results.

How to Use

  1. Enter the required values in the input fields
  2. Results update automatically in real-time
  3. Review the calculation steps for transparency

Formula

Sag = R − √(R² − (D/2)²)

Examples

Try different input values to see how the result changes. This helps you understand the relationship between variables.

Formula

Sag = R − √(R² − (D/2)²)

Our calculator uses standard mathematical formulas to provide accurate results. Always verify critical calculations independently.

Yes, all our calculators are completely free with no registration required.

Yes, use the embed feature to add this calculator to your website.

User Reviews

4.3
Based on 461 reviews
Tom B.
1 week ago

I check the SAG Calculator before making any big Construction decision. Gives me confidence in my numbers.

Chris E.
2 weeks ago

This SAG Calculator is now my go-to for quick checks. Accurate, free, and works without creating an account.

Noah P.
5 months ago

Needed a reliable SAG Calculator for a client presentation. Got accurate results in seconds — saved my deadline.

Carlos G.
2 weeks ago

I recommend this SAG Calculator to everyone in my Construction class. Free, fast, and actually explains the math.