Cookie policy
This site sets analytics cookies from Google Analytics, advertising cookies from Google AdSense, and cookies that store your ad-consent choice. Every calculator works with cookies blocked.
What a cookie is
A cookie is a small text file a website asks your browser to keep, so that the site can recognise the same browser on a later request. Cookies set by the site you are visiting are first-party cookies; cookies set by another domain are third-party cookies.
The cookies this site sets
Lifetimes are as observed on the live site on 17 October 2026. Browsers may shorten them (most cap a cookie at 400 days), and deleting cookies removes them at once.
| Cookie | Set by | Purpose | Lasts |
|---|---|---|---|
_ga |
Google Analytics 4 (first-party) | Analytics: a random identifier that tells a returning browser from a new one, so visits can be counted without counting the same person twice. | 400 days |
_ga_04JPFJHJQN |
Google Analytics 4 (first-party) | Analytics: keeps track of the current visit (session) for this site's analytics property. | 400 days |
__gads |
Google AdSense (first-party) | Advertising: measures how ads on this site perform and limits how often the same ad is shown. | 13 months |
__gpi |
Google AdSense (first-party) | Advertising: works with __gads to serve and measure ads on this site. |
13 months |
__eoi |
Google AdSense (first-party) | Advertising: helps Google detect invalid traffic and ad fraud. | 6 months |
FCCDCF |
Google consent message (first-party) | Consent: stores the choice you made in Google's consent message, where one is shown. | 13 months |
FCNEC |
Google consent message (first-party) | Consent: records whether the consent message has been shown and how it was answered, for consent reporting. | 1 year |
All of these are set only on the live site, never while the site is being developed.
Google may also set its own third-party cookies on Google domains (such as
doubleclick.net) when an ad is shown; those are controlled by Google and
described in how
Google uses cookies. What Google Analytics and AdSense record alongside these cookies is
described in the privacy policy.
What the site does not use
- No cookies for the calculators. What you type is processed in your browser and is not
stored in cookies,
localStorageor any other browser storage. - No cookies from our host. standarddeviationcalculator.net is served by Cloudflare, which sets none on these pages.
- No cookies for the typeface, which is served from this site.
How to block or delete them
- In your browser. Every browser can block cookies for one site or for all sites, and delete the ones already set, from its privacy or site settings. Blocking them does not affect any calculator.
- Google Analytics only. Google's opt-out browser add-on, or any content blocker that blocks analytics scripts, stops the analytics cookies above being set on this and every other site.
- Personalised ads. Turn them off in Google's My Ad Center, or for other vendors at aboutads.info. Where a consent message is shown, you can also decline there; delete this site's cookies to see it again and change your answer.
Changes to this policy
If the site starts setting any other cookie, for example from a new ad partner, this page and the privacy policy will be updated before it happens, and the date at the top will change.
Questions
See the about page.