GradiStat v9.1 is an older, freeware software package (often distributed via academic archives). This review reflects its functionality as a classic tool, not a modern cloud-based application.
Click the calculation button to generate statistics.
A: GradiStat can handle both metric and phi units. You just need to ensure your sieve sizes are correctly labeled in the input sheet. The program will automatically perform the necessary conversions. gradistat v 91 free
Unlike black-box machine learning, GradiStat shows you the iteration steps. You can literally see the log-likelihood converging. For teaching gradient analysis concepts, this transparency is invaluable.
Gradistat v 9.1 is free, but it has limitations: no 64-bit Excel support, no automatic batch processing, and it can be unstable on modern Windows 11 with newer Excel. Here is how it stacks up: GradiStat v9
GRADISTAT provides a robust suite of statistical measures calculated through multiple methodologies:
If you work in sedimentology or a related earth science field, you know that analyzing grain size distributions is fundamental to understanding sedimentary environments. However, when dealing with hundreds of samples, the manual calculation of statistics can be a laborious, error-prone process. Since its inception, a computer program called has been the go-to solution for researchers worldwide, providing a rapid, accurate, and free method for grain size analysis. A: GradiStat can handle both metric and phi units
GRADISTAT generates a range of visual outputs, including frequency histograms, cumulative distribution curves, and ternary (triangular) plots. How to Download GRADISTAT for Free
GradiStat v9.1 remains a cornerstone of sedimentological research, a testament to its thoughtful design and enduring utility. Its ability to quickly, accurately, and freely process grain size data has made it an indispensable tool in labs and universities worldwide. While its age presents minor compatibility challenges, its core functionality is as relevant today as it was when first published.
Accepts raw retained weights (grams) or relative percentages.
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