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Beam deflection and load calculator
Deflection, bending moment, reaction and stress of a simple beam or cantilever under a point or uniform load.
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About Beam deflection and load calculator
Calculate the reactions, maximum bending moment, stress and deflection of a simply supported beam or cantilever under a point load or a uniform load. For a cantilever with an end load, deflection is PL cubed over 3EI. You need the span, load, material stiffness E and the section's second moment of area I.
How to use Beam deflection and load calculator
- Choose a simple beam or cantilever and the type of load.
- Enter the length, load, material and section properties.
- Read the deflection, moment, reaction and stress.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Free to embed on your own website, with a ready-made code to copy.
- Available in 10 languages.
Also known as
Frequently asked questions
What does the second moment of area mean for a beam?
It describes how the cross-section shape resists bending. A deeper section has much higher I, so an I-beam is far stiffer than a flat bar of equal weight.
What is the difference between a simple beam and a cantilever?
A simple beam rests on supports at both ends. A cantilever is fixed at one end and free at the other, so it usually bends and deflects more under the same load.
Can I use the result for a real structure?
Treat it as a quick estimate for basic cases. Real design needs safety factors, code checks and a qualified engineer.
Is Beam deflection and load calculator free?
Yes. Beam deflection and load calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.
Can I put Beam deflection and load calculator on my own website?
Yes. Use the Embed on your site button under the tool to copy a short piece of code and paste it into your page. It is free, needs no account, and the tool keeps working inside your page.