Formula
each reaction=wL/2; maximum moment=wL²/8.
- Use the units shown beside each field.
- Results update automatically whenever you change an input.
- Displayed values use up to four decimal places, or scientific notation for very small or large numbers. Calculations use standard floating-point arithmetic; exact integer and fraction tools identify their own precision rules.
- Uniform full-span load and ideal simple supports. No strength, buckling, connection or deflection checks.
Example Calculation
Example inputs
- Uniform load: 2 kN/m
- Span: 4 m
Uniform load = 2 kN/m; Span = 4 m. Primary result: 4.
Frequently asked questions
How do I use this calculator?
Enter uniform load, span. The result updates automatically. Use Reset to restore the example values.
What method does it use?
each reaction=wL/2; maximum moment=wL²/8.. Uniform full-span load and ideal simple supports. No strength, buckling, connection or deflection checks.
Why might a rounded result differ?
The calculation keeps full numeric precision internally, then rounds the displayed result. Rounding intermediate steps by hand can produce a slightly different answer.
Are my inputs saved online?
No. This calculator processes your inputs in your browser. A recently used list stores only calculator names on this device, not your entered values.
Check the assumptions and units before using this result. Read about calculation methods.