: Currently listed as the main updated version, suitable for Excel versions up to 2010 .
The software has undergone several updates since its inception, moving from the original Excel 97/2000 compatibility to later versions, including version 8.0. Designed for earlier Excel formats. Version 8.0: Updated for Excel 2007–2010.
Ensure your data is formatted as either the weight of sediment retained on individual sieves (sieve apertures measured in micrometers or phi units) or as percentage volumes from a laser sizer.
Gradistat is a Microsoft Excel-based program that calculates particle size statistics. It takes raw data (usually from sieving or laser diffraction) and converts it into standard sedimentological parameters. gradistat v 91 link
is a widely utilized grain size distribution and statistics software package specifically designed for the analysis of unconsolidated sediments. Originally developed by Simon Blott and Kenneth Pye, the program serves as an essential tool for researchers in geomorphology, sedimentology, and coastal management. What is GRADISTAT?
GRADISTAT is a popular tool among geologists, sedimentologists, and geomorphologists. It calculates grain size statistics (Mean, Sorting, Skewness, Kurtosis) using the Method of Moments and the Folk & Ward graphical method. It also classifies the sediment based on the Folk (1954) scheme.
The most common confusion regarding Gradistat is where to find it. Because it is an academic tool often used for commercial consulting as well as student research, access is controlled. : Currently listed as the main updated version,
: Produces high-quality frequency plots, cumulative distribution curves, and ternary diagrams (trigons).
However, safe archival of scientific software does exist. The most reliable sources for a as of 2025 include:
Generates grain size distribution curves and statistics reports automatically. Version 8
For newer versions such as v9.1 (often termed PRO), it is best to check the KPAL site for licensing or access requirements to the newest release. How to Use GRADISTAT Prepare Data: Open the GRADISTAT Excel file.
If you type gradistat v 91 link into a search engine, avoid sites with excessive pop-up ads or "download managers." The legitimate file is usually named Gradistat_v9_1.zip and is approximately 350–400 KB.