Cross Multiplication
Calculate Cross Multiplication instantly with the exact formula and a worked example. Free online calculator — no signup, works on mobile.
Cross Multiplication
a
b
c
d = b·c/a
8
More about: Cross Multiplication
What it calculates
The “Cross Multiplication” calculator computes d = b·c/a from 3 parameters: a, b, c.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters a = 3, b = 4, c = 6 the result is 8.
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.