Terms of Use

1. About CalculatorsPPM

CalculatorsPPM is an educational website that provides calculators and explanatory resources for Parts Per Million (PPM), concentration, unit conversion, dilution, molarity, solution preparation, gas concentration, and related chemistry topics. The website is designed to make common calculations easier to understand and check.

Our calculator library includes the PPM Calculator, mg/L to PPM, PPM to mg/L, PPM to Percent, Percent to PPM, and PPM Dilution Calculator.

2. Educational purpose

CalculatorsPPM provides general educational information and mathematical tools. Calculator results are not professional advice and are not a substitute for laboratory procedures, engineering analysis, safety procedures, regulatory requirements, product specifications, or qualified professional judgment.

Before relying on a result, check the relevant Calculator Methodology, Scientific Accuracy information, formula, units, assumptions, and limitations shown on the applicable calculator page.

3. Calculator results and assumptions

Each calculator uses a defined mathematical relationship. Some calculations are direct unit conversions, while others depend on assumptions such as density, molecular weight, temperature, pressure, concentration basis, or chemical behavior.

For example, the relationship between PPM and mg/L can depend on density, while gas concentration conversions may depend on temperature and pressure. Solution and dilution calculations may also require careful attention to the concentration basis and units.

Related tools include PPM to PPB, PPB to PPM, PPM to µg/m³, µg/m³ to PPM, PPM to Molarity, and Molarity to PPM.

4. Your responsibility to verify results

You are responsible for confirming that the selected calculator, units, input values, concentration basis, and assumptions are appropriate for your particular situation. Important results should be independently checked before being used in a real-world decision.

For preparation and chemistry workflows, you may also review the PPM Solution Calculator, PPM to Grams, Grams to PPM, Chemical Concentration Calculator, and Serial Dilution Calculator.

5. Acceptable use

You may use CalculatorsPPM for lawful personal, educational, research, workplace, and informational purposes. You agree not to:

• Attempt to disrupt, damage, overload, or interfere with the website or its infrastructure.
• Bypass authentication, security controls, access restrictions, or other protective measures.
• Submit malicious code, abusive automated requests, or traffic intended to degrade service.
• Use the website to misrepresent CalculatorsPPM, its calculations, or its relationship with another organization.
• Use automated extraction or copying methods in a way that materially harms the availability or operation of the website.

6. Content and intellectual property

Unless otherwise stated, CalculatorsPPM website content, original calculator interfaces, explanatory text, graphics, branding, and software are provided by CalculatorsPPM and may be protected by applicable intellectual property laws.

You may read, use, and reference the calculators and public educational content for lawful purposes. Do not reproduce substantial portions of the website, present CalculatorsPPM content as your own, or redistribute proprietary website material without appropriate permission.

7. Links and third-party services

CalculatorsPPM may contain links to external websites, scientific references, analytics services, advertising providers, or other third-party resources. These services operate under their own terms and policies. A link does not necessarily mean that CalculatorsPPM controls, guarantees, or endorses the external service.

If advertising is enabled, third-party advertising providers may display advertisements on the website. For information about information handling and advertising-related technologies, see our Privacy Policy and Cookie Policy.

8. Availability and changes

We aim to keep CalculatorsPPM available and useful, but we do not promise that every calculator, page, feature, or resource will always be available, uninterrupted, or error-free. We may update, improve, replace, restrict, or remove website features and content when reasonably necessary.

We may also revise these Terms when the website or its services change. The latest version will be posted on this page with a revised update date.

9. No warranty

CalculatorsPPM calculators and educational content are provided for general informational and educational use. To the extent permitted by applicable law, CalculatorsPPM does not guarantee that every result will be suitable for a particular application, sample, process, material, regulatory requirement, or professional purpose.

Mathematical correctness under a stated formula does not guarantee that the underlying assumptions accurately represent a real-world system.

10. Limitation of responsibility

To the extent permitted by applicable law, CalculatorsPPM is not responsible for losses, damages, decisions, or outcomes resulting from reliance on a calculator result, website content, an unavailable feature, a third-party service, or an external resource. Users should perform appropriate independent verification whenever a result could affect safety, compliance, cost, product quality, or other consequential outcomes.

11. Privacy

Your use of the website is also subject to the Privacy Policy, which explains how information may be handled, including calculator-related technical information, contact submissions, cookies, analytics, and advertising.

12. Contact

If you have a question about these Terms, a calculator, website content, or acceptable use, please use the Contact page. You can also review our Disclaimer, Methodology, and Scientific Accuracy pages for additional information.