KoCalc

Privacy policy

Effective 2026-10-05

1. What you type into a calculator

Calculations run only inside your browser. Your numbers are not sent to a server and are not stored.

2. Cookies, ads and analytics

This site currently sets no cookies and has no ads or visitor analytics. If we add any, we will update this page first to say what is collected and by whom.

3. Hosting

The site is delivered by Cloudflare Pages (Cloudflare, Inc.). Cloudflare may process connection data such as IP address and browser details to deliver the site and block attacks — see the Cloudflare privacy policy.

4. Emails you send us

If you email us, we use your address and message only to reply. We do not share them, and we delete them one year after we reply, or sooner if you ask.

5. Service providers (outside Korea)

• Cloudflare, Inc. (USA) — delivers the site, connection data
• Google LLC (USA, Gmail) — receives and stores emails you send, kept as in section 4

6. Your requests

To see, correct, or delete emails you sent, or to stop us using them, email the address below and we will act without delay.

7. Privacy officer

KoCalc operator · withstudiogroup@gmail.com

8. Changes

If this policy changes, we update the effective date above and keep the previous text at the bottom of this page.