Ratio Calculator
Simplify ratios, scale them up or down, and solve for a missing term.
Simplified ratio
16 : 9
Already in lowest terms
As a decimal
1.777778
As a fraction
16/9
A as % of B
177.778%
If A = 1,920, B =
1,080
ShowHide the working
- 116 and 9 share no common factor above 1
- 2Simplified: 16 : 9 = 16 : 9
- 3Scaling: B = 1,920 × 9 ÷ 16 = 1,080
Formula
A : B → divide both by gcd(A, B)How it works
Reduces a ratio to its lowest terms and, if you give a scale target, solves for the matching second term — handy for aspect ratios and scale drawings.
Example
16 : 9 is already in lowest terms. Scaling A to 1920 gives B = 1080.
About the Ratio Calculator
Simplify ratios, scale them up or down, and solve for a missing term. It sits in the Everyday section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Ratio Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Ratio Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Ratio Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Everyday?
- The calculators you reach for daily — basic math, percentages, tips, averages. You can browse the full Everyday category for related calculators.