Aspect Ratio Calculator — Free Online Tool
Use Aspect Ratio Calculator free online — runs entirely in your browser, no data sent to servers. No sign-up required.
Mode
Enter width and height to get the simplified aspect ratio.
Common Ratios
Input
Common Use Cases
- 16:9 — HD video, widescreen monitors, YouTube
- 4:3 — Traditional TV, presentations
- 1:1 — Instagram square posts
- 9:16 — Instagram/TikTok vertical video, Stories
- 4:5 — Instagram portrait posts
Frequently Asked Questions about Aspect Ratio Calculator
- Is Aspect Ratio Calculator completely free to use?
- Yes, Aspect Ratio Calculator is 100% free with no sign-up, no watermarks, and no usage limits.
- Is my data private?
- Aspect Ratio Calculator runs entirely in your browser — no data is ever sent to our servers. Your content stays on your device.
- Does it work offline?
- Once the page has loaded, Aspect Ratio Calculator works fully offline in your browser — no internet connection is required.
- How accurate are the results?
- All calculations use standard, well-established formulas and are accurate to at least 4 decimal places. Results are for guidance.
- Does Aspect Ratio Calculator work on mobile and tablet?
- Yes, Aspect Ratio Calculator is fully responsive and works in all modern browsers on desktop, tablet, and mobile.
This tool runs entirely in your browser. No data is ever sent to our servers.