Serviceability Check
Beam Deflection Limit L/360 Calculator
Convert a serviceability ratio such as L/360 into an allowable deflection and compare it with the measured or calculated beam movement.
Limit Inputs
Allowable Deflection
| L / ratio | L/360 |
| Actual deflection | 12.00 mm / 0.47 in |
| Allowable deflection | 16.67 mm / 0.66 in |
Common Serviceability Ratios
| L/180 | 33.33 mm / 1.31 in |
| L/240 | 25.00 mm / 0.98 in |
| L/360 | 16.67 mm / 0.66 in |
| L/480 | 12.50 mm / 0.49 in |
| L/600 | 10.00 mm / 0.39 in |
Engineering Notes
- This page checks serviceability only. It does not confirm bending strength, shear resistance, or vibration performance.
- Common project limits vary by material, occupancy, finishes, and code framework, so always verify the governing ratio in the real design basis.
- If you already know the beam response, enter the actual deflection to get an immediate pass-or-fail result.
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