Pick a calculator
Choose a case from Beams, Frames, Arches, Plates or Section Properties — the exact support and load condition you're checking.
Keep the hand-check logic you trust, without rebuilding the same worksheet every time.
Choose a case from Beams, Frames, Arches, Plates or Section Properties — the exact support and load condition you're checking.
Enter spans, loads and section properties in SI or Imperial. Diagrams and results update instantly as you type.
Review the diagrams, formulas and results. One click produces a clean PDF report ready to file.
Pick a case, type your numbers, read the answer — with the formulas shown so you can check every step.
Not a black box. Each calculator shows its source, its equations and its intermediate values.
Shear, moment and deflection update as you type.
Every reaction and maximum shown with its formula.
Clean A4/Letter PDF with inputs, diagrams and results.
Switch unit systems at any time with sensible defaults.
Read section forces at any exact location along the member.
Recognized engineering references cited on every tool.
The first calculator in every section stays free forever. Go Pro monthly, or pay once a year and save 24%.
Prices in US dollars, including VAT or sales tax — you pay exactly the price shown. Paid plans renew automatically until cancelled. Orders are processed by Paddle.com, our Merchant of Record — see the Terms and Refund Policy.
Beams, frames, arches, plates and section properties all include a free tool — no credit card, no account. Start with our most-used example: the simple beam under uniform load.
Open the free example