Galculator
Galculator: A free, open-source Linux calculator with algebraic, RPN and formula-entry modes. Ranked #23 of 32 in Scientific Calculator Apps by our editors (6.3/10); pricing: Free plan; best for linux users who prefer RPN or formula entry.
At a glance
- Editor score6.3 / 10
- PricingFree plan
- Best forLinux users who prefer RPN or formula entry
- Free planYes
- Paid fromNone
- Platform supportDesktop
- Facts checked28 Sep 2026
Where it wins
- Switch among algebraic, RPN, formula-entry and paper modes
- Use scientific and bitwise functions with four number bases
- Define single-variable functions and choose degree, radian or grad mode
Where it doesn't
- Available for Linux desktops only
- Advanced capabilities such as matrix operations are not documented
- No documented equation-solving, statistics or complex-number functions
Our verdict on Galculator
Galculator is a desktop scientific calculator for Linux, aimed at solo users and small teams who want a choice of algebraic, reverse Polish notation (RPN), or formula-entry workflows. A paper mode keeps evaluated expressions and results in a list, while user-defined single-variable functions allow a degree of customization. Its GTK 2/GTK 3 foundation makes it a Linux desktop option rather than a cross-platform calculator app.
The feature set covers common scientific work and some lower-level number handling. Documented functions include arithmetic, trigonometry, inverse trigonometry, hyperbolic functions, logarithms, powers, roots and factorials, alongside bitwise operations. Users can work in decimal, hexadecimal, binary or octal and select degree, radian or grad angle modes. That makes Galculator a practical fit for Linux users moving between ordinary calculations, scientific expressions and base conversion. It is also free and open source, with installation information available through the project repository.
Its scope is less suitable for users who need a calculator with documented equation solving, statistics, complex-number calculations or matrix operations; those capabilities are not established in the project materials. The platform fit is similarly specific: Linux desktop users are the intended audience, with no listed support for other operating systems. Choose Galculator if its entry modes, scientific functions and base controls match your day-to-day calculations. If your work depends on advanced mathematical modes or a different desktop platform, another calculator is a better fit.
Galculator pricing
Galculator fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Platform support | Desktop |
| Equation solving | Not verified |
| Statistics tools | Not verified |
| Programmable functions | Yes |
| Complex numbers | Not verified |
| Offline mode | Not verified |
| Matrix operations | Not verified |
| Deployment | Desktop |
| Platforms | Linux |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | github.com |
| Facts checked | 28 Sep 2026 |
Alternatives to Galculator
- Wolfram|AlphaBroad computational answers across math, science and more, with paid step-by-step help.9.3
- GeoGebraA broad, visual math toolkit for learners, with graphing, algebra practice, and classroom tools.9.1
- Desmos Scientific CalculatorA focused web calculator for scientific functions, lists, variables, and complex numbers.8.8
See all Galculator alternatives →
Used Galculator? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Galculator for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
Galculator is listed in our Scientific Calculator Apps directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/galculator/"><img src="https://www.itechguides.com/best/badge/galculator.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.
Last updated · How we research and update