# Total Elongation Calculator

Posted by Dinesh onOnline **elongation (extensometer) calculator** to calculate the percentage of total elongation at maximum force. The extensometer used shall have a gauge length of at least 100 mm. The gauge length shall be indicated in the test report.

This method consists of determining the extension at maximum force on the force-extension curve obtained with an extensometer.

The percentage total elongation at maximum force, A

_{gt}, shall be calculated by using the formula:

`A`_{gt} = ?L_{m} / L_{e} x 100

.## Calculate Percentage of Total Elongation at Maximum Force

### Formula:

A_{gt} = ( ?L_{m} / L_{e} ) x 100

- A
_{gt}is percentage total elongation at maximum force - ?L
_{m}is the extension at maximum force. - L
_{e}is the extensometer gauge length;