Rock Mass Rating Calculator

About the Rock Mass Rating Calculator

This free online Rock Mass Rating (RMR) calculator helps geotechnical engineers evaluate rock mass quality for construction and mining projects using the RMR classification system.

How to Use This Calculator

Enter rock strength (UCS), RQD percentage, and joint spacing measurements. The calculator will compute the RMR value based on standard geotechnical parameters.

Common Use Cases

This calculator is essential for geotechnical engineers, mining engineers, tunneling projects, slope stability analysis, and rock mass classification.

Benefits of Using This Tool

One of the main benefits of this calculator is its simplicity and speed. Instead of manually performing calculations, which can be error-prone and time-consuming, this tool provides instant, accurate results. The interface is designed to be intuitive, making it accessible to users of all technical skill levels.

The calculator is completely free to use and doesn't require any registration or downloads. You can use it as many times as you need without limitations. Additionally, all calculations are performed locally in your browser, ensuring your privacy and security.