The Best Calculators in 2026
We researched calculator products using their official websites, including pricing pages, plan tables, and product documentation. Rankings consider each product’s core calculation features, value for money, and verified capabilities. This category covers standalone calculator software, from basic arithmetic tools to scientific, graphing, financial, and specialized calculators.
Our top picks
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Top ranked
Qalculate!#1 of 219.3/10A free desktop calculator for expressions, symbolic math, equation solving, and graphing.
Free plan
-
Runner-up
NumWorks Graphing Calculator#2 of 219.1/10A student-focused calculator spanning graphing, equation solving, statistics, and Python.
Free plan
-
Top-ranked free plan
Omni Calculator#3 of 219.0/10A free library of specialized calculators with explanations, conversions and two-way inputs.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 21 tools, best first
-
Best forDesktop users needing a powerful all-purpose calculator
A free desktop calculator for expressions, symbolic math, equation solving, and graphing.
- Offline mode
- Equation solver
- Financial functions
9.3/10★★★★★Visit Qalculate! -
Best forStudents needing graphing, algebra, and statistics tools
A student-focused calculator spanning graphing, equation solving, statistics, and Python.
- Offline mode
- Equation solver
- Financial functions
9.1/10★★★★★Visit NumWorks -
Best forPeople seeking specialized calculators and worked examples
A free library of specialized calculators with explanations, conversions and two-way inputs.
- Equation solver
- Financial functions
- Graphing
9.0/10★★★★☆Try Omni Calculator -
Best forLearners and teachers needing graphing and math tools
A broad set of graphing, math, and classroom tools for learners and teachers.
8.9/10★★★★☆Visit GeoGebra -
Best forPeople wanting broad calculator tools on many devices
Broad calculator coverage with graphing, financial tools, converters, and offline access.
- Offline mode
- Financial functions
- Calculation history
8.8/10★★★★☆Visit Calc Pro -
Best forStudents needing broad math problem solving and steps
A broad math solver for students who want answers and worked steps from typed or photographed problems.
8.7/10★★★★☆Visit Mathway -
Best forWindows users wanting a capable free desktop calculator
A free Windows desktop calculator that goes beyond arithmetic with graphing and conversions.
- Equation solver
- Calculation history
- Graphing
8.6/10★★★★☆Visit site -
Best forLinux users wanting a free open-source desktop calculator
A free, open-source Linux calculator spanning everyday math, finance and programming.
- Equation solver
- Financial functions
- Calculation history
8.5/10★★★★☆Try GNOME Calculator -
Best forFinance students and professionals using iOS
An iOS calculator focused on financial workflows, with scientific functions included.
- Financial functions
- Scientific functions
8.4/10★★★★☆Visit site -
Best forEngineers solving complex equation systems
A Windows equation solver for engineers working with complex systems and properties.
- Offline mode
- Equation solver
- Graphing
8.3/10★★★★☆Visit EES -
Best forUsers seeking CASIO calculator emulation across devices
A multi-device CASIO emulation suite with scientific, graphing and CAS tools.
- Equation solver
- Graphing
- Scientific functions
8.2/10★★★★☆Visit CASIO -
Best forFree web calculations and legacy desktop graphing
A free calculator collection with scientific tools and legacy desktop graphing.
- Financial functions
- Calculation history
- Graphing
8.1/10★★★★☆Visit GraphCalc -
Best forApple users who calculate within notes and text
A text-first calculator for Apple devices, with live answers and reusable variables.
- Financial functions
8.0/10★★★★☆Visit Soulver -
Best forFree web scientific calculations with accessibility options
A web-based scientific calculator with statistics, complex numbers and accessibility options.
- Scientific functions
7.9/10★★★★☆Visit Desmos -
Best forApple users wanting a free built-in general calculator
A free Apple-device calculator that adds scientific tools, conversions, and Math Notes graphs.
- Equation solver
- Calculation history
- Graphing
7.8/10★★★★☆Visit Apple -
Best forAlgebra learners who want guided solutions and practice
A focused algebra calculator pairing step-by-step solutions with lessons and practice.
- Offline mode
7.7/10★★★★☆Visit MathPapa -
Best forAndroid users wanting a classic scientific calculator
A classic-style Android calculator with scientific, engineering, and RPN modes.
- Calculation history
- Scientific functions
7.6/10★★★★☆Visit RealCalc -
Best forMac users wanting calculations embedded in notes
Numi brings scientific, conversion, and date calculations into editable notes.
- Scientific functions
7.5/10★★★★☆Visit Numi -
Best forLinux users needing free symbolic math and graphing
A free KDE calculator for Linux users who need symbolic math and graphing.
- Graphing
- Scientific functions
7.4/10★★★★☆Visit KAlgebra -
Best forPeople needing free basic arithmetic in a browser
Free web calculator for addition, subtraction, multiplication, division and decimals.
7.2/10★★★★☆Visit Desmos -
Best forWindows users who need indexed file and app search
A free Windows search utility with configurable indexing and OneDrive results.
6.0/10★★★☆☆Visit Microsoft
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Scientific functions | Graphing | Equation solver | Score |
|---|---|---|---|---|---|---|---|
| 1 | Qalculate! | Yes | Free | Yes | Yes | Yes | 9.3 |
| 2 | NumWorks Graphing Calculator | Yes | Yes | Yes | Yes | 9.1 | |
| 3 | Omni Calculator | Yes | Free | Yes | Yes | Yes | 9.0 |
| 4 | GeoGebra | Yes | 8.9 | ||||
| 5 | Calc Pro | Yes | Free | Yes | Yes | 8.8 | |
| 6 | Mathway | Yes | $39.99/yr | 8.7 | |||
| 7 | Microsoft Calculator | Yes | Free | Yes | Yes | Yes | 8.6 |
| 8 | GNOME Calculator | Yes | Free | Yes | Yes | 8.5 | |
| 9 | BA II Plus™ Financial Calculator App | No | Yes | No | No | 8.4 | |
| 10 | Engineering Equation Solver (EES) | No | $160 one-time | Yes | Yes | Yes | 8.3 |
| 11 | CASIO Calculator Software | No | Yes | Yes | Yes | 8.2 | |
| 12 | GraphCalc | Yes | Free | Yes | Yes | 8.1 | |
| 13 | Soulver | No | $59 one-time | 8.0 | |||
| 14 | Desmos Scientific Calculator | Yes | Free | Yes | No | 7.9 | |
| 15 | Apple Calculator | Yes | Free | Yes | Yes | Yes | 7.8 |
| 16 | MathPapa | Yes | $4.99/mo | 7.7 | |||
| 17 | RealCalc Scientific Calculator | Yes | Yes | No | No | 7.6 | |
| 18 | Numi | Yes | 7.5 | ||||
| 19 | KAlgebra | Yes | Free | Yes | Yes | 7.4 | |
| 20 | Desmos Four Function Calculator | Yes | Free | No | No | No | 7.2 |
| 21 | Windows Search | Yes | Free | 6.0 |
Head-to-head All 27 comparisons →
- Qalculate! vs NumWorks Graphing Calculator
- Qalculate! vs Omni Calculator
- Qalculate! vs GeoGebra
- Qalculate! vs Calc Pro
- Qalculate! vs Mathway
- Qalculate! vs Microsoft Calculator
- Qalculate! vs GNOME Calculator
- NumWorks Graphing Calculator vs Omni Calculator
- NumWorks Graphing Calculator vs GeoGebra
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How we rank calculators
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update