Privacy Policy

1. Information we collect

CalculatorsPPM is designed so that ordinary calculator use does not require an account. We do not ask you to create an account simply to calculate a result.

Calculator information

Calculator fields may contain numerical values such as concentration, mass, volume, density, molecular weight, temperature, or pressure. These values are used to perform the calculation you request. Where calculations are performed in your browser, the entered values are processed as part of that browser session and are not intended to be stored as a personal profile by CalculatorsPPM.

Please do not enter confidential, proprietary, private client information, passwords, financial information, or other sensitive information into calculator fields. Use the calculators for the numerical inputs they are designed to accept.

Technical information

Like most websites, CalculatorsPPM may receive basic technical information through normal web requests, such as IP address, browser type, device information, operating system, referring page, requested URL, date and time, and basic server or security logs. This information may be used to operate, secure, troubleshoot, and improve the website.

Contact information

If you contact CalculatorsPPM through the Contact page, we may receive the name, email address, subject, and message you choose to provide. We use this information to respond to your request, investigate calculator or website issues, and communicate with you about your inquiry.

2. How we use information

Information may be used for legitimate website and business purposes, including:

• Providing calculator results and requested website functionality.
• Maintaining website security and preventing abuse or automated attacks.
• Responding to questions, corrections, feedback, and support requests.
• Understanding general website performance and usage when analytics are enabled.
• Supporting advertising and measuring advertising performance when advertising services are enabled.
• Improving calculator content, formulas, navigation, accessibility, and educational resources.

3. Cookies and similar technologies

CalculatorsPPM may use cookies, local storage, pixels, or similar technologies when required for website functionality, security, analytics, or advertising. Ordinary calculator calculations are intended to work without requiring a user account.

Cookies used by analytics or advertising providers may help measure visits, remember settings, prevent fraud, limit repetitive advertising, or deliver and measure advertisements. You can manage cookies through your browser settings. Blocking some cookies may affect certain website features.

For more information about this topic, see the Cookie Policy.

4. Advertising and Google AdSense

CalculatorsPPM may display advertising through third-party advertising providers, including Google AdSense, when advertising is enabled on the website. Third-party vendors, including Google, may use cookies or similar technologies to serve or measure ads based on a user's visits to this and other websites.

Where applicable, advertising providers may process information such as browser or device identifiers, approximate location, ad interactions, and browsing activity to provide, personalize, limit, or measure advertising. The availability and type of advertising may vary by location, device, consent choices, and provider settings.

Users may be able to control personalized advertising through Google's advertising settings and through available browser or device privacy controls. CalculatorsPPM does not control the privacy practices of third-party advertising providers and recommends reviewing the applicable provider privacy documentation.

5. Analytics and third-party services

CalculatorsPPM may use analytics, security, hosting, email, advertising, or other third-party services to operate and improve the website. These providers may process limited information according to their own privacy policies and the services configured by CalculatorsPPM.

Third-party services are not used to make the calculator results themselves more accurate. Formula behavior, assumptions, and limitations are explained on the individual calculator pages and in our Calculator Methodology and Scientific Accuracy resources.

6. Calculator library and internal links

CalculatorsPPM connects related calculators so you can move between compatible concentration methods without repeatedly searching the site. Examples include the PPM Calculator, mg/L to PPM, PPM to mg/L, PPM to Percent, Percent to PPM, and PPM Dilution Calculator.

For smaller concentration units, you can use PPM to PPB and PPB to PPM. For gas concentration and chemistry relationships, see PPM to µg/m³, µg/m³ to PPM, PPM to Molarity, and Molarity to PPM.

For solution preparation and mass relationships, related tools include the PPM Solution Calculator, PPM to Grams, Grams to PPM, Chemical Concentration Calculator, Serial Dilution Calculator, and PPM pH Calculator.

These links are provided to make the calculator library easier to navigate. Each tool has its own stated formula, assumptions, and limitations. See All PPM Calculators to browse the complete library.

7. Data sharing and disclosure

CalculatorsPPM does not sell personal information as a standalone data product. Information may be shared with service providers when reasonably necessary to host, secure, analyze, support, or operate the website, or when required by law.

If advertising or analytics providers are enabled, those providers may independently process information under their own terms and privacy policies. We do not control how a third-party provider processes information after it has been received by that provider.

8. Data retention

Information is retained only for as long as reasonably necessary for the purpose for which it was collected, including responding to inquiries, maintaining security records, complying with legal obligations, resolving disputes, or operating configured third-party services. Retention periods may differ depending on the type of information and the service involved.

9. Your privacy choices

Depending on your location and the services enabled on the website, you may have choices or rights concerning personal information, cookies, analytics, and personalized advertising. You can also contact us to ask about information submitted directly through the website.

You can control many cookie and privacy preferences through your browser or device settings. Where a consent or privacy-choice mechanism is provided on the website, you can use it to manage the available options.

10. Children's privacy

CalculatorsPPM is an educational website and is not intended to collect personal information from children. We do not knowingly request personal information from children through calculator forms. If you believe a child has submitted personal information to us, please contact us so the information can be reviewed and, where appropriate, removed.

11. Security

We use reasonable technical and administrative measures intended to protect the website and information submitted through it. No internet transmission or storage system can be guaranteed to be completely secure, so users should avoid submitting confidential information that is not necessary for the requested service.

12. Links to other websites

CalculatorsPPM may link to external websites, references, scientific resources, or third-party services. A link does not mean that CalculatorsPPM controls or endorses the privacy practices of that external website. Review the privacy policy of any third-party site before submitting information.

13. Changes to this Privacy Policy

This policy may be updated when the website, calculators, analytics, advertising, or data practices change. The updated version will be posted on this page with a revised “Last updated” date. Continued use of CalculatorsPPM after an update means that you are viewing the current version of this policy.

14. Contact CalculatorsPPM

If you have a privacy question, want to ask about information you submitted, or believe there is an issue with this policy, please use our Contact page. You can also review our Terms of Use, Disclaimer, and Cookie Policy for related information.