Contact
AspectCalc is a small, independently run site. Messages are read and genuine corrections are acted on, so if something on the page is wrong we would like to hear about it.
Last updated: October 9, 2026.
What to write to us about
- Corrections. A ratio, resolution, decimal value or worked example that does not check out. If you can, include the page and the figure you believe is wrong.
- Calculator problems. A browser, device or input where the calculator does not behave as described.
- Feature requests. A ratio, conversion or export that would make the tool more useful for your work.
- Advertising and partnerships. Enquiries about advertising or sponsorship on this site.
- Privacy and legal. Questions about the privacy policy or the terms of use.
How to reach us
Email: hello@aspectcalc.com
Please include the page address and a short description. We aim to reply to substantive messages within a few business days.
Before you write
Many questions are already answered on the home page. The How to Calculate Aspect Ratio section walks through the arithmetic, the FAQ covers the most common questions, and each ratio guide has its own worked example and resolution table.
What to include in your message
The faster we can reproduce something, the faster we can fix it. For a calculation problem, the two numbers you entered and the answer you expected is usually enough. For a display problem, the browser and device you were using helps. For a correction, the page address and the figure you believe is wrong lets us check it directly against the source.
We do not send marketing email and do not add correspondents to any mailing list. Messages are read to answer the question and correct the page, then deleted once dealt with.
About the site
AspectCalc is a free aspect ratio calculator built with plain HTML, CSS and JavaScript. There is no account system and no database of user data — the calculator runs entirely in your browser.