DataFit for Windows

Name: DataFit
Rating: 5 (1 reviews)
Author: Oakdale Engineering

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Editors’ Review

Download.com staffFebruary 26, 2026

DataFit handles nonlinear regression and data plotting for up to 20 variables. It offers custom model definition, a vast library of predefined models, and extensive result visualization.

Top Recommended Alternative

Sprimer

Free

4.5

Pros
- Supports over 350 predefined 2D/3D regression models
- Allows users to define custom regression models
- Provides 2D and 3D plotting with color contouring
- Generates spreadsheets of evaluated model values
- Exports code in BASIC or C for external use
Cons
- No explicit mention of advanced statistical analysis features
- Limited information on data import/export formats

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Full Specifications

GENERAL

Release: June 10, 2008

Latest update: February 26, 2026

Version: 9.0

OPERATING SYSTEMS

Platform: Windows

Operating System

Windows NT
Windows 95
Windows 98
Windows XP
Windows 2000
Windows 10
Windows ME

Additional Requirements: None

POPULARITY

Total Downloads: 43,272

Downloads Last Week: 2

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User Reviews

5/5

1 User Votes

Easy-to-use, yet powerful curve-fitting program
Prof. James BrennerApril 1, 2007
Pros
Literally about one thousand of my students over the last nine years have enjoyed this wonderful product at Florida Tech within our College of Engineering. I learned how to use this within one minute. Feel free to contact jbrenner@fit.edu for a link to an article on curve fitting. The output is far more complete than the Add Trendline function in Excel, and is easier to use than Polymath (developed by CAChE Corporation - a team of chemical engineering professors). DataFit is also the cheapest true 3-D plotting program. By contrast, Excel plots use the row numbers as category axes when it plots 3-D plots. <p> <p>The only limitations are an inability to save, print, or copy after the trial period is up. <p> <p>Oakdale Engineering is very reasonable with regard to site licensing as well.
Cons
Summary

Developer’s Description

By Oakdale Engineering

Work with regression models.

DataFit is a tool for performing nonlinear regression (curve fitting) and data plotting with up to 20 independent variables. You can define your own regression models, or choose from more than 350 predefined 2D/3D models. Results include 2D and 3D plots and a variety of fitting parameters. You can also export code in BASIC or C to use a model in a user-written program. This program includes the addition of 3D color-contour plotting capability and new plot text formatting features, such as superscripting and subscripting. It also provides the ability to create a spreadsheet of evaluated regression models through user-specified intervals, providing interpolated and extrapolated values of the equation. New features in version 9.0 include Intuitive Graphical Interface, non-graphical execution, online help and "tool-tip" text .

DataFit for Windows

Editors’ Review

Top Recommended Alternative

Sprimer

Pros

Cons