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Ratio Calculator

Simplify a:b and optionally solve a:b = c:x.

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Results

How to use Ratio Calculator

  1. Enter a, b, c (optional, solve a:b = c:x). Leave a field blank only when the page says the value is missing.
  2. Read the result rows under the form. Errors appear in the status line. Nothing is uploaded.
  3. Rounding follows IEEE floating point in this browser unless the page says it uses integers or BigInt.

Ratio Calculator

Simplify

ComputesSimplify a:b and optionally solve a:b = c:x.
IncludesSimplify
IncludesFourth term
Enginepercentage
UploadNone
AdviceArithmetic only

What Ratio Calculator is

2:4 simplifies to 1:2 by dividing by the GCD. If you type c, x = (b/a) × c. a and b cannot both be 0.

The formula runs in this tab. CZNull does not receive the numbers.

How this page computes

A four-term blank is the proportion page. Percents are a ratio to 100.

Entities and related jobs

Simplify a:b and optionally solve a:b = c:x. Named features: Simplify, Fourth term.

See also Proportion Calculator, Percentage Calculator, GCD Calculator, Scientific Calculator, Fraction Calculator, Average Calculator.

Use cases

Mix ratios, map scales, and gear counts. Gear ratio as a machine formula lives under science later; this page is the ratio itself.

Limits

Invalid input appears in the status line. IEEE floating point applies unless a row says otherwise. CZNull does not receive the numbers.

Ratio Calculator questions

Does this page upload my numbers?
No. The formula runs in the page you opened. CZNull does not receive the values.
What does Ratio Calculator compute?
2:4 simplifies to 1:2 by dividing by the GCD.
Why is this its own URL?
Search queries name this job. Nearby modes stay on their own pages so inputs do not mix. Related calculators are linked below Ratio Calculator.
What is 2:4 simplified?
1:2.
If 2:3 = 4:x, what is x?
6.
Can I treat the result as official?
No. Rounding and real-world rules can differ. Use the page to check the arithmetic.