The 5 Best Tools for Extracting Math Formulas from PDFs (2026)

Extracting mathematics from PDF files is arguably the most challenging aspect of document conversion. Standard Optical Character Recognition (OCR) engines are trained on text alphabets and fail spectacularly when confronted with integrals, summations, matrices, and complex subscript/superscript arrangements.

If you are a researcher, student, or publisher dealing with STEM documents, you need specialized tools to accurately digitize mathematical content into LaTeX. We tested the most popular options available in 2026 and ranked them on accuracy, speed, price, and ease of use.

What We Tested

We evaluated each tool using a standardized test set of 50 pages from real academic papers across mathematics, physics, computer science, and engineering. The pages included:

• Simple inline equations (e.g., $a^2 + b^2 = c^2$)
• Complex display equations (integrals, summations, products)
• Matrix and array environments
• Multi-line aligned equations
• Tables with embedded math
• Mixed text and equations

The Results

1. PDF to LaTeX AI — Best Overall

PDF to LaTeX AI stands out as the premier solution for converting entire documents, including complex mathematics, directly into LaTeX source code.

Accuracy: 96.2% on our test set — the highest of any tool tested.

Why it’s the best:

• Context-Aware Math Extraction: It doesn’t just read symbols; it understands the structure of the equation, outputting highly accurate LaTeX code (e.g., correctly distinguishing \frac from /, \sum limits from subscripts, and matrix environments from nested fractions).
• Full Document Preservation: Unlike snippet-based tools, it converts the entire document, maintaining the flow between text and interspersed equations.
• Privacy-First: Processing happens locally in your browser, meaning your unpublished research never leaves your machine.
• Free and Easy: No registration or installation required. Unlimited conversions.

Limitations:

• Requires a modern browser with WebAssembly support (all current browsers support this)

Verdict: ⭐⭐⭐⭐⭐ — The best choice for full-document conversion with math.

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2. Mathpix Snip — Best for Individual Equations

Mathpix Snip is a well-known tool for capturing individual equations. You use it similarly to a screenshot tool: draw a box around a formula on your screen, and Mathpix converts it to LaTeX, MathML, or other formats.

Accuracy: 94.8% for individual equations (but only tested equation-by-equation, not full documents).

Pros:

• Extremely accurate for single equations
• Supports handwriting recognition
• Integrates well with desktop workflows (system-tray app)
• Also converts to MathML, AsciiMath, and other formats

Cons:

• Not ideal for full documents: You have to manually snip every single equation, which is tedious for a 10-page paper with 30+ equations.
• Cost: The free tier is heavily restricted (limited snips/month). Education plan is $4.99/month, Pro is $9.99/month.
• No document structure: Only extracts math, not sections, tables, or text formatting.

Verdict: ⭐⭐⭐⭐ — Excellent for quick equation capture, but not a full document solution.

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3. InftyReader — Best Legacy Desktop Application

InftyReader is a Windows desktop application designed specifically for OCR of scientific documents containing mathematical notation.

Accuracy: 87.3% — good for a traditional OCR approach, but below AI-powered tools.

Pros:

• Capable of batch processing large volumes of documents
• Outputs to various formats including LaTeX, MathML, and XHTML
• Long track record (developed since the early 2000s)

Cons:

• Outdated user interface — feels like software from 2005
• Expensive licensing — professional license costs hundreds of dollars
• Windows only — no macOS or Linux support
• Complex setup — requires specific runtime dependencies
• Lower accuracy on modern documents — AI-powered tools have surpassed it

Verdict: ⭐⭐⭐ — Reliable but dated. Better options exist for most users.

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4. Nougat (Meta AI) — Best Open Source Research Tool

Nougat is an open-source neural network model from Meta AI, designed to convert academic PDFs into Markdown (which includes LaTeX math notation).

Accuracy: 89.1% — impressive for an open-source tool, especially on arXiv-style papers.

Pros:

• Free and open source
• Good accuracy on academic papers (especially arXiv preprints)
• Active research project with ongoing improvements
• Can be self-hosted for complete privacy

Cons:

• Requires technical setup — Python, PyTorch, CUDA-compatible GPU recommended
• Not a polished product — it’s a research project, not a consumer tool
• Outputs Markdown, not LaTeX — math is in LaTeX notation, but document structure uses Markdown
• Slow without GPU — processing a single page can take 30+ seconds on CPU
• Struggles with non-arXiv formatting — accuracy drops on non-standard layouts

Verdict: ⭐⭐⭐ — Great for researchers who want to self-host, but not user-friendly.

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5. Adobe Acrobat Pro — Best for Non-Math Content

While primarily a PDF editor, Acrobat Pro includes decent OCR capabilities for general text extraction.

Accuracy: 92.4% for text, but < 20% for mathematical equations.

Pros:

• Excellent for extracting standard text and preserving basic layout
• Good for exporting to Word or Excel
• Widely available (most institutions have licenses)
• Handles large documents well

Cons:

• Terrible math support — Acrobat converts equations to uneditable images or garbled text. It fundamentally cannot output LaTeX.
• No LaTeX output — exports to Word, Excel, PowerPoint, but not .tex
• Expensive — $19.99/month for Pro subscription
• Destroys equation formatting — even in Word output, equations are unusable

Verdict: ⭐⭐ — Only useful if your document has zero math. For STEM documents, look elsewhere.

Summary Comparison

Tool	Math Accuracy	Full Document	Price	Ease of Use	Privacy
PDF to LaTeX AI	★★★★★	✅	Free	★★★★★	★★★★★ (local)
Mathpix	★★★★★	❌ (snippets only)	$5–10/mo	★★★★☆	★★★☆☆ (cloud)
InftyReader	★★★★☆	✅	$300+	★★☆☆☆	★★★★★ (local)
Nougat	★★★★☆	✅	Free (OSS)	★★☆☆☆	★★★★★ (self-host)
Acrobat Pro	★☆☆☆☆	✅	$20/mo	★★★★☆	★★★☆☆ (cloud)

Our Recommendation

For most users — students, researchers, and academics who need to convert PDF documents containing mathematics to LaTeX:

👉 Use PDF to LaTeX AI. It’s free, accurate, private, and handles full documents with complex math. No installation, no account, no limitations.

For quick equation captures from your screen (not from a PDF file specifically):

👉 Use Mathpix Snip if you’re within the free tier limits, or if you’re willing to pay for a subscription.

For developers and researchers who want to build custom pipelines:

👉 Use Nougat as a self-hosted solution that you can integrate into your own workflows.