Is Practical Web Tools really free?

Yes, all 300+ tools are completely free with no hidden costs. There are no premium tiers, no usage limits, and no subscriptions. The AI chat feature is also 100% free because it runs on your own computer using Ollama.

Are my files uploaded to your servers?

No. All file processing happens directly in your browser using WebAssembly technology. Your files never leave your device. This makes Practical Web Tools ideal for sensitive documents like contracts, medical records, and financial statements.

What file formats can I convert?

Practical Web Tools supports PDF conversion (to Word, Excel, PowerPoint, images, text), image formats (JPG, PNG, WebP, HEIC, GIF, BMP), audio formats (MP3, WAV, FLAC, OGG, M4A, AAC, OPUS), and document compression (ZIP, 7Z, GZIP, RAR).

How does the free AI chat work?

The AI chat uses Ollama, a free open-source tool that runs AI models locally on your computer. After a one-time setup (about 5 minutes), you can chat with models like Llama 3.2 and Mistral completely offline. Your conversations are never sent to any external servers.

Do I need to create an account?

No account or signup is required. All tools work immediately with no registration. For AI chat, you just need to install Ollama once on your computer.

Is there a file size limit?

Most tools handle files up to 100MB. Since processing happens locally in your browser, the actual limit depends on your device's memory. For very large files, we recommend using our Split PDF or Compress Files tools first.

Does it work on mobile devices?

Yes. All file conversion tools work on smartphones and tablets. The AI chat feature requires a desktop computer (Windows, Mac, or Linux) because Ollama needs to run locally.

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Free Matrix Calculator - Matrix Operations

Name: Free AI Chat - Offline AI Assistant with Ollama
Rating: 4.9 (256 reviews)
Author: Practical Web Tools

Perform matrix operations: addition, multiplication, determinants, inverses, and more.

Files Never Leave Your DeviceInstant ProcessingNo Watermarks

Calculate

Quick Answer

Matrix operations: addition (element by element), multiplication (rows by columns). Determinant for 2×2: ad-bc. Inverse exists if determinant ≠ 0.

Key Facts about Matrix Calculator:

Matrix multiplication not commutative
2×2 determinant: ad-bc
Inverse requires det ≠ 0
Used in computer graphics
Linear algebra fundamental

Why Use Our Matrix Calculator?

Matrix tools:

📊

All Operations

Add, multiply, transpose.

🔢

Determinant

Calculate det.

↩️

Inverse

Find inverse matrix.

📐

Any Size

Multiple dimensions.

⚡

Instant

Quick results.

🔒

Private

Data stays secure.

Try Matrix Calculator Now

How to Matrix Calculator in 3 Easy Steps

Matrix math:

Enter Matrix

Input elements.

Select Operation

Choose operation.

Get Result

See result matrix.

Start Now - It's Free

Why Use Our Calculator?

All operations

Any size matrix

Step-by-step

Instant results

Calculate

📊

Matrices

Linear algebra tools

Common Use Cases for Matrix Calculator

Perfect for:

Linear Algebra

Matrix operations.

Calculate

Engineering

System solutions.

Solve

Graphics

Transformations.

Transform

Frequently Asked Questions

Everything you need to know about our matrix calculator

When does matrix have inverse?

When its determinant is not zero (non-singular matrix).

Still have questions? Try the tool yourself!

Calculate

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