âī¸ Proportion Calculator
Calculate d (a : b = c : d) instantly from a, b, c.
How to use the Proportion Calculator
- Enter A, B, C.
- The result updates instantly as you type.
- Copy or note down your result.
How it works
Formulas: D (A : B = C : D) = [B]*[C]/[A].
Example
Using the default values (A: 2, B: 3, C: 10):
D (A : B = C : D)15
FAQ
Is the Proportion Calculator free to use?
Yes. It is free, needs no signup and has no usage limits.
Is my data safe?
Yes. Everything is calculated in your browser, so what you type or upload is never sent to a server.
Can I use it on my phone?
Yes. KsWebProduction is built mobile-first and works in any modern browser.