Cramer's Rule
Calculate Cramer's Rule instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Cramer's Rule
a₁
b₁
c₁
a₂
b₂
c₂
x = (c₁·b₂ − c₂·b₁)/det
2
More about: Cramer's Rule
What it calculates
The “Cramer's Rule” calculator computes x = (c₁·b₂ − c₂·b₁)/det from 6 parameters: a₁, b₁, c₁, a₂, b₂, c₂.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters a₁ = 2, b₁ = 1, c₁ = 5, a₂ = 1, b₂ = -1, c₂ = 1 the result is 2.
How to use
- Enter the parameter values — every field above is adjustable with a slider.
- The result and related metrics are calculated automatically as you type.
- Use the additional metrics shown (if any) where needed.
- Copy the result or bookmark the page.