Your data

Below is a plain account of the data that is, and is not, collected when you use Percentage Increase Calculator at percentage-increase-calculator.org. Everything below applies across the site, from the tool to the help articles.

The short version

• You never need an account.
• Your inputs are processed on your device, not on our server.
• Analytics (Yandex Metrica and Microsoft Clarity) and third-party ads use cookies.
• You stay in control through your browser settings and by emailing us.

About us and this policy

The website percentage-increase-calculator.org is operated under the name Percentage Increase Calculator and offers a free percentage increase calculator. Questions about personal data go to the site's operator, who reads the mailbox [email protected]. Under European data protection law, the operator is the controller of the limited data described below.

What we collect — and what we don't

You do not need to sign up to use the percentage increase calculator: there are no accounts, logins or passwords on the site. The tool's code runs in your browser, so the values you type into the percentage increase calculator stay on your device. The only information collected is technical, coming from server logs, analytics and advertising, and each kind is explained below.

About cookies

Like most websites, percentage-increase-calculator.org involves cookies and similar technologies, small pieces of data your browser keeps for a site. Our own pages do not set cookies. Cookies on percentage-increase-calculator.org come from analytics and advertising providers. You can block or delete cookies in your browser settings; the percentage increase calculator will keep working, although ads may become less relevant.

Technical logs

Our web server automatically records each request in standard log files. Each log line records the IP address, browser user agent, time and requested page. They help us block abuse, fix problems and count traffic.

Analytics

Use of percentage-increase-calculator.org is measured with Yandex Metrica and Microsoft Clarity. They collect information such as the pages you view, how long you stay, the referring site, your device and browser, and an approximate location derived from your IP address.

Both offer session replay and heatmaps, which record clicks, scrolling and mouse movement so we can see where the layout confuses people. They set their own cookies, and Yandex and Microsoft handle the data under their own privacy statements. We look at the results in aggregate and do not use them to identify individual visitors.

Advertising

Percentage Increase Calculator is free because it shows ads. The networks that deliver ads may place cookies or use device information so that they can select ads, limit repeats and report on how ads perform.

Where permitted, networks may personalise ads using your browsing on other sites as well as this one. The networks act under their own privacy policies, and we do not pass them your tool inputs. You can opt out of personalised ads from many networks at optout.aboutads.info and youronlinechoices.eu, and you can block third-party cookies in your browser.

Legal grounds under the GDPR

If you are in the European Economic Area or the United Kingdom, we rely on the following legal bases:

• Consent for analytics and advertising cookies where the law requires it; you can withdraw it at any time.
• Legitimate interests for server logs, security and general usage statistics, where your rights do not override them.
• Replying to you: if you write to us, we process your email to deal with it.

Processing outside your country

The services we use, including hosting, analytics and advertising providers, may process data in countries other than your own. The level of legal protection there may differ from that of your home country.

How long data is kept

Information is kept only while it serves its purpose; server logs are rotated out after a limited period unless they are needed to investigate misuse. Correspondence is kept while it is needed to answer you and handle any follow-up. Yandex, Microsoft and the ad networks apply their own retention periods.

Your choices and rights

Depending on where you live, you may have the right to access, correct or erase the personal data we hold about you, to restrict or object to its processing, and to data portability. Where we rely on consent, you can withdraw it at any time. Because we hold very little data and no accounts, we may need details such as your IP address and the approximate time of your visit to find anything relating to you. If you are unhappy with how we handle your data, you can complain to the supervisory authority in your country. To exercise any of these rights, email [email protected].

California (CCPA/CPRA)

If you are a California resident, the CCPA, as amended by the CPRA, gives you the right to know what personal information is collected about you, to request its deletion or correction, and to opt out of the sale or sharing of your personal information. We do not sell personal information in the ordinary sense, and visitor data is not exchanged for payment. Advertising cookies, though, can amount to “sharing” for cross-context behavioural advertising as California law defines it.

Opting out is possible through the Global Privacy Control setting in supporting browsers, through your browser's cookie settings, or by writing to us. You will not be discriminated against for exercising any of them.

Use by children

The site is meant for a general audience and is not aimed at children under 13 (under 16 in the EEA and UK). We do not knowingly collect data from children. If a child has given us personal information, for instance in an email, please let us know so that we can delete it.

Security measures

The site is served over HTTPS, so traffic between your browser and percentage-increase-calculator.org is encrypted. Access to the server and its logs is limited to the people who run the site. No system is perfectly secure; still, your tool inputs stay on your device.

Changes

This policy is updated when our practices change. The text on this page is the version in force.

Contact

If you have a question about this policy or want to make a privacy request, email [email protected]. We answer privacy requests within the time limits that apply under data protection law.