Free Bending Moment Calculator
Calculate the maximum bending moment for a simply supported beam with uniform or point load.
ft
lb/ft
lbs
Total Max Moment
6,125 ft-lbs
Moment from Uniform Load6,125 ft-lbs
Moment from Point Load0 ft-lbs
Total Max Moment vs Beam Span
Bending Moment
Uniform load: M = wL squared / 8
Center point load: M = PL / 4
Both produce maximum moment at mid-span for a simply supported beam. If both loads are present, add the moments together (superposition).
Example Calculation
14 ft beam with 250 lb/ft uniform load.
- 01M = 250 x 14 squared / 8 = 250 x 196 / 8 = 6,125 ft-lbs
- 02No point load contribution
- 03Required section modulus = M / Fb (allowable bending stress)
Frequently Asked Questions
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