Beam Load Calculator
Use this beam load calculator to estimate beam reactions or load capacity. Enter span, support type, load and material details and review an estimated load or reaction value.
Simplified simply-supported beam formulas only. Not a substitute for a licensed structural engineer's analysis.
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How it works
Uniform load: M = wL²/8, deflection = 5wL⁴/(384EI); point load at center: M = PL/4, deflection = PL³/(48EI)How to use the Beam Load Calculator
Start by entering span, support type, load and material details. Keep the units consistent and check that each value belongs to the same question.
The result gives an estimated load or reaction value. Real structures need engineering checks for material, connections and safety. Use it as a guide and check any instructions, rules or professional advice that apply.