A free truss calculator you can put in front of a class without filling in a single form. Almost.
This page is for teachers — and for whoever at your school signs off on classroom software. Send them the
Privacy and safety section.
Why teachers use it
It's fun. Really. Colourful force diagrams, a deformed shape that animates, results the instant anything
changes. When a structure doesn't work, Truzme shows where the problem is. Feedback from classes keeps calling it a
"brilliant tool".
Zero setup. It runs in the browser. No installation, no license server, no accounts to create for 30 students.
Hand calculations become checkable. Students solve by hand, then verify reactions and member forces in seconds.
The stability check tells them whether the structure could stand in the first place. Quick feedback before CAD. Students can try out an idea they've sketched long before they know a CAD or
simulation package well enough to test it there.
From screen to model. DXF import and export means a calculated truss can become a laser-cut or hand-built one.
Where it fits
Engineering and construction courses — including CTE programs, at high school or college level.
Physics — forces, equilibrium, tension and compression.
Maths — vectors, trigonometry, and systems of equations, with a real structure behind them.
In the classroom
Live demo on the projector
Open truzme.com, build a triangle, add a load, and the forces appear. Move a node and watch
tension turn into compression. It takes about as long as writing the problem on the board.
Checking homework
The useful order is: solve by hand first, then check in Truzme. The calculator is fast enough to make skipping the
hand calculation tempting, so it's worth saying out loud.
Assignments in your LMS
Paste a link into Canvas, Google Classroom, Moodle, or any LMS. There's no login wall and no cookie banner, so it
opens straight into the calculator — even embedded in an iframe.
Ready-made material
You don't have to build everything from scratch:
Examples — ready-made trusses that open straight in the calculator. Each one has its own link, so
you can send an exact example to the class. See Work with examples. Guides — short, plain-language explanations of each feature and the ideas behind it, from
getting started to buckling. Good for students to read on their own.
Some examples are just for fun, like this one:
A truss shaped like a cat
Working with AI
Every model has a project code: a plain-text version students can paste into an AI assistant,
ask for changes, and paste back. Useful for exploring "what if" questions, and for discussing when an AI's answer is
wrong.
Privacy and safety
Truzme was built without a backend. That was a maintenance decision first, and it turns out to be the best privacy
policy there is.
No accounts. Students never sign up, log in, or enter an email address.
No student data. Truss models are stored only in the student's own browser, on their own device. They're never
uploaded.
No cookies. None — so no consent banner either.
Anonymous statistics only. Cookie-free usage statistics via Vercel Analytics — which pages are visited and
which features get used. Never the truss models or anything typed into them. No tracking across sites, no
individual profiles.
No ads, no in-app purchases.
No social features. No chat, comments, public galleries, or public profiles — nothing for students to post and
nobody for them to talk to. This is on purpose, and it will stay that way: public galleries are a common reason
schools block a site for students.
The details are in the Privacy Policy.
School approval paperwork
Some schools require a privacy checklist or vendor questionnaire before software can be used in class — for example
Australia's ST4S, or a district questionnaire in the US.
Truzme's answers are usually short, because there's nothing collected to describe. If your school needs a form filled
in, get in touch and I'll fill it in.
What Truzme is not
Truzme analyses 2D pin-jointed trusses with linear static analysis. It's a learning tool, not a design tool: results
aren't meant to be the basis of a real structure without a licensed engineer's check. See the
Terms of Service.
Questions
Using Truzme in a course? I'd like to hear how — and what's missing. Say hi.