Freedom251 › Statistical Analysis Software
XLfit
What XLfit is
XLfit is a paid Windows desktop add-in for Microsoft Excel, focused on scientific mathematics, statistics, curve fitting, and charting. It imports Microsoft Excel spreadsheets and includes statistical tests, regression models, and more than 70 built-in linear and nonlinear curve-fitting models. Users may add unlimited custom models. The analysis engine supports smoothing, weighting, error bars, global fitting, statistics, and automatic data-point rejection. Interactive 2D and 3D charts include previews and point-and-click editing, while chart objects can be exported as editable objects to other Microsoft Office applications. IDBS says XLfit has been independently validated by the UK National Physical Laboratory and the US National Institute of Standards & Technology. It supports backward compatibility and individual or batch workbook migration. The academic license covers one user and requires a separate license for each PC. Listed plans are $350 a month for academic use and $900 a month for commercial use; e-learning costs $75.00 USD once.
Who it suits
XLfit suits Windows and Excel users who need scientific curve fitting, statistical analysis, and editable charts. Academic and commercial buyers can choose the corresponding listed license.
What it does well
- Over 70 built-in curve-fitting models
- Unlimited custom models can be added
- Interactive 2D and 3D charting
- Statistical tests and regression models
- Editable Office chart exports
What to know first
- No free plan
- Windows desktop and Excel dependent
- Academic license requires each PC separately
- Commercial license costs $900 a month
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| XLfit 5 Academic License | Academic use | $350, paid once |
| E-learning | Access to XLfit e-learning material | $75, paid once |
| XLfit 5 Commercial License | Commercial use | $900, paid once |
As idbs.com lists them, read 11 Oct 2026. The maker's own page has the final word.
Verdict
XLfit combines extensive curve-fitting options with Excel-based analysis and chart editing. Its paid, Windows-only delivery and per-PC academic licensing are important purchasing considerations.
Facts from XLfit's own pages
- Analysis
- The curve-fitting engine supports smoothing, statistics, weighting, error bars, global fitting, and automatic data-point rejection. · idbs.com, 11 Oct 2026
- Built-in models
- XLfit includes over 70 built-in linear and nonlinear curve-fitting models, and users may add unlimited custom models. · idbs.com, 11 Oct 2026
- Charting
- It supports interactive 2D and 3D charting, chart previews, and point-and-click chart editing. · idbs.com, 11 Oct 2026
- Company
- IDBS says it was founded in 1989 and is part of Danaher Corporation. · idbs.com, 11 Oct 2026
- Compatibility
- IDBS says XLfit is backward-compatible with earlier versions and supports individual or batch workbook migration. · idbs.com, 11 Oct 2026
- Data import formats
- Microsoft Excel spreadsheets · idbs.com, 25 Sept 2026
- Deployment
- desktop · idbs.com, 25 Sept 2026
- Free plan
- No · idbs.com, 25 Sept 2026
- Free trial
- IDBS offers a free trial by request and says it will send access instructions after the form is submitted. · idbs.com, 11 Oct 2026
- Integrations
- XLfit works within Microsoft Excel and exports editable chart objects to other Microsoft Office applications. · idbs.com, 11 Oct 2026
- License scope
- The academic license is for one user, and a separate license is required for each PC on which XLfit 5 Academic is installed. · idbs.com, 11 Oct 2026
- Operating system
- The academic product page lists Windows 7 and above as supported operating systems. · idbs.com, 11 Oct 2026
- Purpose
- XLfit is a Microsoft Excel add-in for Windows for scientific mathematics, statistics, curve fitting, and charting. · idbs.com, 11 Oct 2026
- Regression models
- Yes · idbs.com, 25 Sept 2026
- Security and compliance
- IDBS describes its quality and information-security controls as subject to continuous assurance and says its products and services support applicable GxP compliance and data integrity. · idbs.com, 11 Oct 2026
- Statistical tests
- Yes · idbs.com, 25 Sept 2026
- Support
- XLfit support resources include online help, a support portal, e-learning, FAQs, quick-start guides, and keycode requests. · idbs.com, 11 Oct 2026
- Validation
- IDBS says XLfit has been independently validated by the UK National Physical Laboratory and the US National Institute of Standards & Technology. · idbs.com, 11 Oct 2026
Where XLfit stands on Freedom251
- Statistical Analysis Software#96 of 106