Free Strain Calculator
Calculate engineering strain from the change in length and original length of a member.
mm
mm
Engineering Strain
0.001000 mm/mm
Strain Percentage0.1000 %
Microstrain1,000 microstrain
Engineering Strain vs Change in Length
Engineering Strain
Strain measures the deformation of a body relative to its original size.
Formula
epsilon = delta_L / L_0
where delta_L is the change in length and L_0 is the original gauge length. Strain is dimensionless but is often expressed in microstrain (x 10^6) or as a percentage. Tensile strain is positive; compressive strain is negative.
Example Calculation
A 500 mm gauge length bar elongates by 0.5 mm under load.
- 01epsilon = 0.5 / 500 = 0.001 mm/mm
- 02As percentage: 0.001 x 100 = 0.1%
- 03In microstrain: 0.001 x 10^6 = 1000 microstrain
Frequently Asked Questions
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