A free, browser-based single plane balancing calculator for rotating machinery. Bookmark this page — it’s built to be your go-to tool whenever you need to run a quick single-plane balance calculation or brush up before your ISO 18436-2 vibration certification exam.
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How to Use the Free Balance Software
- (Run the machine) Enter amplitude and phase values for the Original run.
- Press the Plot O button
- Add a Trial Weight and Trial Weight Angle
- (Run the machine) Enter amplitude and phase values for Original + Trial Weight (O+T) run.
- Press the “Plot O+T” button
- Press the “Plot T” button
- Select “Leave Trial Weight On” or “Remove Trial Weight”
- Press the Calculate button to calculate your balance solution.
- Press the Clear button to start over
Why This Free Balancing Software Exists
If you work in vibration analysis, rotating equipment maintenance, or you’re studying for your ISO 18436-2 Category I, II or III vibration certification, single plane balancing is one of those skills you need to be able to do cold — with a calculator, with software, and by hand.
This free single plane balancing tool uses the standard vector (three-run or influence coefficient) method to calculate trial weight corrections, so you can:
- Practice single plane balance calculations without buying software
- Check your hand calculations during ISO 18436-2 exam prep
Bookmark this page. Whether you’re a working vibration analyst, a millwright, or a student prepping for certification, this calculator is meant to be a tool you come back to again and again.
Important Disclaimer
This tool is provided free for training and educational purposes, and is designed specifically to help students prepare for the ISO 18436-2 vibration analyst certification exam. While the underlying vector math and results are accurate, this calculator is not a substitute for a certified, field-calibrated balancing instrument, and should not be used as the sole basis for correcting critical or safety-related rotating equipment in a production environment. Always follow your site’s balancing procedures and use calibrated equipment for final field balancing work.
Want to Go Deeper Into Vibration Analysis and Balancing?
This calculator covers single plane balancing — one small piece of what’s tested on the ISO 18436-2 exam. If you want structured, hands-on instruction covering the full body of knowledge (single and two-plane balancing, spectrum analysis, phase analysis, fault diagnosis, and more), Zenco offers:
- In-person certification classes (multiple locations)
- Live online classes
- Self-paced pre-recorded video courses
- Private courses on-site or online
- Shop Courses
Frequently Asked Questions
What is single plane balancing? Single plane (static) balancing corrects unbalance in a rotor where the mass is concentrated in one plane, such as a fan, pump impeller, or flywheel. It uses vibration amplitude and phase readings, taken before and after a trial weight is added, to calculate the correction weight and angle.
Is this balancing calculator free to use? Yes. This single plane balancing tool is free to use, with no login or software download required.
Does this tool help with ISO 18436-2 certification prep? Yes. It’s built specifically to help vibration analysts practice the vector calculation method used in single plane balancing problems on the ISO 18436-2 Category I and II exams.
Can I use this for real field balancing jobs? The math is accurate, but per the disclaimer above, this tool is intended primarily for training. Always cross-check field balancing work with calibrated instrumentation and your organization’s procedures.
Do you teach rotor balancing in your courses? Yes, our ISO 18436-2 Vibration courses include sections on diagnosing unbalance and rotor balancing.
