Math & Scientific
Inverse Matrix Calculator
Inverse Matrix — it computes the inverse as adj(A) ÷ det(A), and flags a singular matrix when det = 0. This page runs that same calculation on your numbers, in your browser: no signup, no uploads, nothing stored.
Inverse Matrix Calculator lets you work through a calculation in seconds: enter your matrix for the result, all worked out locally in your browser.
About this calculator
It computes the inverse as adj(A) ÷ det(A), and flags a singular matrix when det = 0. It matters when you need the exact relationship checked quickly rather than worked through by hand. Here is the calculation on real numbers: For [[4,7],[2,6]] (det 10), the inverse is (1/10)×[[6,−7],[−2,4]] = [[0.6,−0.7],[−0.2,0.4]] . For your own figures, use the calculator above — same method, your inputs, computed on-device.
How to use
- Type a square matrix to invert, with rows separated by semicolons or new lines and values by commas.
- For example, enter 4, 7; 2, 6 for a 2 by 2 matrix.
- Press Calculate to compute the inverse.
- Read the inverse matrix and the determinant used to find it.
Why use Inverse Matrix Calculator
Fast
Calculations run in your browser. No round trip to a server.
Private
Your inputs never leave your device. Nothing is uploaded.
Free
No signup, no paywall, no ads-in-results, no watermarks.
Accurate
Based on standard, well-established formulas.
Mobile-ready
Optimised for phones, tablets, and desktops alike.
Transparent
Honest disclaimers wherever browser limits or regional rules apply.
Common uses
Use it for verifying answers from a textbook
Use it for understanding a formula's behaviour
Use it for science-fair and project numbers
Inverse Matrix in research and report calculations
Inverse Matrix in competitive-exam practice
Inverse Matrix in tutoring and teaching sessions
Technical notes
Inverse Matrix Calculator computes the inverse as adj(A) ÷ det(A), and flags a singular matrix when det = 0.
Inputs are taken exactly as entered, so check for typos before trusting an answer.
Because it runs locally, results appear instantly with no server round-trip.
FAQ
Which matrices have no inverse?
A matrix has no inverse when its determinant is zero, meaning it is singular. The calculator detects this and reports it instead of returning numbers.
How large a matrix can I invert?
The inverse calculator supports square matrices up to 8 by 8. Larger matrices are rejected with a message.
How do I format the rows?
Separate values with commas or spaces and rows with a semicolon or a new line, for example 4, 7; 2, 6.
Does the Inverse Matrix Calculator send my data to a server?
No. The Inverse Matrix Calculator runs entirely in your browser, so nothing you enter is uploaded, stored, or shared.
Worked example
For [[4,7],[2,6]] (det 10), the inverse is (1/10)×[[6,−7],[−2,4]] = [[0.6,−0.7],[−0.2,0.4]].