Beam shear force calculator

The Beam shear force calculator computes beam shear force from the relation central point load V = P/2. It takes a single input (central point load in N) and returns the max shear force in N. Because this is a pure mathematical or physical formula rather than a jurisdiction-specific rule, the result never changes over time: the same inputs always produce the same answer, so you can rely on it whether you are checking homework, sizing a design, or sanity-checking another tool. Enter your values in the fields below and the result updates instantly; you can also share a permalink that pre-fills the exact calculation, which is useful for teaching, reports, or collaboration. For example, with central point load = 2000 N, the max shear force works out to 1000 N, and the worked example further down the page shows every step so you can follow the arithmetic and reproduce it by hand. The method is the standard form documented by Documented methodology, and the figure above each result carries the date it was last verified. This tool is general information and is not a substitute for professional engineering, medical, financial, or scientific advice; always check critical results against the primary source and your own judgement.

With Central point load = 2000 N, the result is 1000 N.

Formula: central point load V = P/2. Source: Documented methodology, as at 2026-06-23.

Max shear force1000 N

Applies to: any numeric inputs. Method source: Documented methodology, checked 2026-06-23.

The formula

central point load V = P/2

Worked example

With Central point load = 2000 N:

  1. V = P/2 (simply supported, central load)
  2. Max shear force = 1000 N

This worked example is one of the automated golden-value tests this calculator must pass before it can publish.

What this assumes

  • Inputs are real numbers in the units shown.
  • The result is the exact value of central point load V = P/2; general information, not professional advice.

Frequently asked questions

What formula does this use?

central point load V = P/2, the standard form documented by Documented methodology.

Does the result ever change over time?

No. This is a pure formula with no external rate, so the same inputs always give the same result.

Official sources and verification

Reviewed by the CalculatorHub team, edited by James Graham, 2026-06-23. See our methodology. General information, not professional advice.