Gradistat V 91 Free [2021] Jun 2026

Originally developed by Dr. Simon J. Blott and Kenneth Pye in 2001, the software automates the laborious process of sediment classification. Harvard University Statistical Calculations

GRADISTAT Software - KPAL : The primary site for downloading official Excel-based versions.

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.

This comprehensive guide breaks down what GRADISTAT does, how to use it safely, and modern alternatives if your version of Excel faces compatibility blocks. What is GRADISTAT? gradistat v 91 free

GRADISTAT is a specialized computer program designed to calculate grain size statistics from sedimentary data. It works within Microsoft Excel, utilizing Visual Basic for Applications (VBA) macros to automate complex calculations.

To use GRADISTAT, you need Microsoft Excel with macros enabled.

For both methods, GRADISTAT outputs four critical statistics: The average particle size. Originally developed by Dr

Why? Because grain size analysis is fundamental. Whether you are analyzing beach sands, river sediments, glacial tills, or deep-sea cores, you need to convert raw sieve data and hydrometer measurements into meaningful statistical parameters: mean, sorting (standard deviation), skewness, and kurtosis. Gradistat v 9.1 does this efficiently, accurately, and—crucially—for free.

The standard versions of GRADISTAT are freely available from the authors.

Calculated in metric units (micrometers/millimeters). Geometric Method of Moments: Calculated in metric units. the primary author

: It supports both the Method of Moments (arithmetic and geometric) and the Folk and Ward (1957) graphical methods.

The software is famously free to use, typically made available for educational and research purposes. How to Get GRADISTAT v9.1 Free

Simon Blott, the primary author, formerly worked at a company called KPAL (Kenneth Pye Associates Ltd.). Their website also hosts a page for GRADISTAT, which provides essential background information, instructions, and a direct download link to the original file from the ESPL website.