How to use this beam calculator

1. Load an example or enter your own span, supports and loads in the panel on the right. Toggle units between metric (m, kN) and imperial (ft, kip) at the top right of the toolbar.
2. Results update live — no Calculate button. The diagrams stack with one shared x-axis so you can read V(x), M(x) and δ(x) at the same point.
3. Add E and I in the Material section to also get deflection. Typical for steel: E = 210 000 N/mm² (29 000 ksi).
4. Share or export using the toolbar — copy the link to send your setup to a colleague, or download a PNG, CSV, or print to PDF.

Built for engineers, by engineers

This calculator is the result of listening to what people actually moan about with other free beam tools — paywalls, signup gates, unit lock-in, no deflection, no way to share. Everything here is free, no account needed, and runs entirely in your browser.

When you'll need more

This covers single-span beams with point and distributed loads — which handles a surprising number of real-world checks. For continuous beams, multiple spans, partial or trapezoidal loading, full Eurocode 3 steel section design or live links into your Excel calc sheet, see the BeamBuddy add-in.