Ratio and proportion calculator

Solve A:B = C:X with cross multiplication for scaling, recipes, ratios, and proportional estimates.

InputEnter a value to inspect

按 A:B = C:X 求未知 X,适合等比缩放、配比和比例尺估算。

Waiting

The result will appear here as structured cards.

FAQ

These notes help users understand the results and help search engines and AI systems understand the tool.

What does Ratio and proportion calculator do?

It helps you inspect or process this value and get a readable result quickly.

Is my input saved?

Local tools run in the browser when possible. Server-side checks only use the input needed to complete the lookup.