GraphCalc
GraphCalc: A free calculator collection with scientific tools and legacy desktop graphing. Ranked #12 of 21 in Calculators by our editors (8.1/10); pricing: Free plan; best for free web calculations and legacy desktop graphing.
At a glance
- Editor score8.1 / 10
- PricingFree plan
- Best forFree web calculations and legacy desktop graphing
- Free planYes
- Paid fromFree
- Scientific functionsYes
- Founded1999
- Facts checked24 Sep 2026
Where it wins
- More than 450 web calculators cover math, finance, health, and everyday tasks
- Scientific calculator includes angle modes and calculation history
- Legacy Windows software offers 2D and 3D graphing
Where it doesn't
- Graphing is tied to legacy downloadable software, not the web collection
- The latest listed Windows release is from 2003
- The listed Linux release is also from 2003
Our verdict on GraphCalc
GraphCalc brings together a broad collection of free online calculators and unit-conversion tools for students, professionals, and general users. The web collection spans math, finance, investing, health and fitness, and everyday utilities. Its browser-based scientific calculator handles trigonometric and inverse trigonometric functions, logarithms, exponentials, powers, roots, factorials, permutations, and combinations, with degree and radian modes plus a calculation history area. It is a practical fit for people who want varied calculations in a browser without a paid plan.
The distinction between web and desktop matters most for graphing. The online collection includes a scientific calculator, while 2D and 3D graphing is described for the legacy Windows graphing calculator software; it should not be treated as a capability of the current web tools. The download page lists Windows version 4.0.1 and a Linux 0.0.1 release, both dated 2003. Choose GraphCalc for its free web calculators and, if appropriate, its older desktop graphing option. Those seeking current graphing tools integrated into the browser should look elsewhere.
GraphCalc is open source and free, with web and desktop deployment options. The published materials emphasize the calculators and documentation rather than a broader support offering. The breadth of the online collection is its main draw: it can serve many common calculation needs without requiring a dedicated application for each one. Its trade-off is that the desktop graphing component is explicitly legacy software, and the listed downloads are old. It suits solo users and small-scale needs centered on accessible calculations; users who need modern desktop graphing or a single current workflow spanning web and graphing should consider alternatives.
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GraphCalc pricing
GraphCalc fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Scientific functions | Yes |
| Graphing | Yes |
| Equation solver | Not verified |
| Financial functions | Yes |
| Offline mode | Not verified |
| Calculation history | Yes |
| Deployment | Cloud, Desktop |
| Platforms | Web, Windows, Linux |
| Support | Docs |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | graphcalc.com |
| Facts checked | 24 Sep 2026 |
Alternatives to GraphCalc
- Qalculate!A free desktop calculator for expressions, symbolic math, equation solving, and graphing.9.3
- NumWorks Graphing CalculatorA student-focused calculator spanning graphing, equation solving, statistics, and Python.9.1
- Omni CalculatorA free library of specialized calculators with explanations, conversions and two-way inputs.9.0
See all GraphCalc alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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