Privacy Policy
The short version
Every calculator on this site runs inside your browser. The numbers you type — file sizes, speeds, durations, capacities — are processed on your device and are never sent to us. We have no accounts, no upload feature, and no server that receives your inputs.
What we do collect
Like most websites, our hosting provider (Cloudflare) processes standard technical information such as IP addresses and request details to deliver pages and protect against abuse. We also use privacy-respecting analytics — Microsoft Clarity and Google Analytics 4 — to count page views and understand which calculators are used. Those services may set cookies and record approximate location, device type, browser and interaction patterns such as clicks and scrolling. They do not receive the values you enter into the calculators.
Advertising
Ads pay for hosting. Advertising partners (including Adsterra and, where applicable, Google AdSense) may set cookies or read device identifiers to limit how often you see an ad and to measure performance. We do not share the values you type with advertisers because we never receive them in the first place. You can control personalised advertising through your browser settings and, for Google, through Google's Ads Settings.
Cookies
Cookies on this site come from the analytics and advertising services described above, plus any consent banner required in your region. The calculators themselves work with cookies disabled — nothing about the arithmetic depends on them.
Your choices
You can block or clear cookies and advertising identifiers in your browser at any time, and analytics can be blocked with standard content blockers. Because we do not hold accounts or personal data, there is usually nothing for us to delete on request — if you believe we hold something about you, write to the address below and we will check.
Contact
Questions about this policy: support@filesizecalc.site.
Last updated: 22 September 2026.