How it works
Multiply compatible matrices with C[i,j] = Σ A[i,k] × B[k,j]. A’s column count must equal B’s row count.
Input definitions
- Matrix A: CSV rows, no header
- Plain text; maximum 200,000 characters.
- Matrix B: CSV rows, no header
- Plain text; maximum 200,000 characters.
A worked example
- Matrix A: CSV rows, no header
- 1,2 3,4
- Matrix B: CSV rows, no header
- 5,6 7,8
Assumptions & limits
Up to 12×12 per matrix, numbers within ±10¹². Uses floating-point arithmetic; no symbolic algebra.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Why must matrix dimensions match in a specific order?
Each output entry is a row-by-column dot product. Therefore the number of columns in A must equal the number of rows in B; swapping A and B can change or invalidate the product.
How does Matrix multiplication worksheet work?
Multiply compatible matrices with C[i,j] = Σ A[i,k] × B[k,j]. A’s column count must equal B’s row count.
What are the limits of Matrix multiplication worksheet?
Up to 12×12 per matrix, numbers within ±10¹². Uses floating-point arithmetic; no symbolic algebra.
How do I keep the full worksheet?
Run the tool and choose Download file. The on-page table is a preview and may show only the first 20 rows; the downloaded file contains the full result. CSV downloads escape spreadsheet formula prefixes. Inputs and files are processed on your device.