Terms & Conditions

Introduction

Welcome to calpercentage.com. These Terms and Conditions ("Terms") explain the rules for using this website, including all calculators, tools, and blog posts.

Please read these Terms before using the site. By using calpercentage.com, you agree to follow these rules and our Privacy Policy. If you disagree with any part, please stop using the site.

Definitions

Here's what some words in this document mean:

• "Site" means calpercentage.com and everything on it.
• "User," "you," or "your" means anyone who visits or uses the site.
• "We," "us," or "our" means calpercentage.com and the people who run it.
• "Content" means everything on the site — text, calculators, articles, and more.
• "Services" means the percentage calculators and tools on the site.
• "Results" means the numbers the calculators give you.

Acceptance of terms

By visiting or using calpercentage.com, you confirm that you are at least 13 years old (or 16 in some countries) and that you agree to follow these Terms.

If you use the site for a company or organization, you confirm you have permission to agree to these Terms on their behalf.

If we update these Terms, continuing to use the site means you accept the new version. Check this page occasionally for any changes.

Description of the service

calpercentage.com offers free online percentage calculators for everyday use, learning, and personal math. The tools include:

• Percentage Calculator — find P% of a value, what percentage X is of Y, or recover a base value when you know the percentage and the result.
• Percentage of Number Calculator — determine what percentage one number represents of another.
• Percentage Increase / Decrease Calculator — calculate the percentage change between two values, or find the new value after applying a percentage shift.
• Discount Calculator — find the final price after single or stacked discounts, or reverse-calculate the original price from a sale price.
• Tip Calculator — calculate tip amounts, total bills, and per-person splits for restaurant checks.

All calculations happen in your browser — nothing is sent to a server. The site is completely free: no sign-up, no subscription, no login. We may add or remove features at any time.

Permitted and prohibited use

You're welcome to use calpercentage.com for free, personal use — like homework, everyday math, or sharing links with friends.

You may not:

• Use the site for anything illegal.
• Try to break or slow down the site.
• Use bots or automated tools to copy large amounts of content.
• Copy or sell any part of the site — its design, code, or articles — without our permission.
• Upload viruses or harmful software.
• Try to hack into the site or its systems.
• Present the site's results as official figures from a government, bank, doctor, or school.
• Embed the site inside another website or app without our permission.
• Do anything that could harm the site or its users.

If you break these rules, we may block your access and report it to the authorities.

Accuracy and reliability of calculations

Our calculators use standard math formulas and are designed to give you accurate results. We fix any errors we find quickly.

However, the results are for information and learning only. They should not replace advice from a professional for important decisions.

In particular:

• Talk to a financial advisor or accountant before making big money decisions.
• Check your school grades against your school's official records.
• Use proper payroll software for business pay calculations.
• Check any health-related percentages with a doctor.
• Confirm legal or contract percentages with a lawyer.

We do not guarantee that results are always perfect. You are responsible for how you use them.

Intellectual property

Everything on calpercentage.com — the design, articles, code, and calculators — belongs to us and is protected by copyright law.

You are allowed to use the site for your own personal, non-commercial use. You may not:

• Copy or download the code or content to sell or share.
• Modify or create new products based on our work.
• Sell or rent access to any part of the site.
• Remove our copyright notices.
• Copy large sections of our articles onto other sites without permission.

Note: the math formulas themselves (like "percentage change = ((new − old) / old) × 100") are not copyrighted — they're just math. But our explanations, design, and how we present them are our own creative work.

You're welcome to quote or reference our content with a link back to us. For anything else, please ask us first.

Disclaimer of warranties

calpercentage.com is offered "as is" — meaning we provide it as-is, without any promises or guarantees. We do not guarantee:

• That the site will always be fast, secure, or error-free.
• That the site or its results will meet your specific needs.
• That the site is free from viruses or bugs.
• That results are always 100% accurate or complete.

Some countries' laws may still give you additional rights even when a site says this.

Limitation of liability

As far as the law allows, we are not responsible for any losses or problems caused by using this site. This includes:

• Lost money, business, or earnings.
• Losses from trusting the calculator results.
• Lost or damaged data.
• Damage to your reputation or savings.
• Errors in the site's content or calculator results.
• Unauthorized access to our servers.
• Viruses sent through the site by someone else.
• The site going offline or shutting down.

This applies no matter the reason — even if we were told something might go wrong.

Indemnification

If your use of the site breaks these Terms and causes a legal problem for us (including legal costs), you agree to cover those costs. This includes misusing results or violating someone else's rights.

External links

Our site may link to other websites. These links are just for convenience — we don't own or control those sites and are not responsible for what's on them. Visiting any linked site is your own choice and subject to that site's own rules.

Service availability

We try to keep calpercentage.com online all the time, but we can't guarantee it will always be available. The site might go down for maintenance, technical issues, or reasons out of our control. We may change or shut down the site at any time without warning.

Accessibility

We work to make calpercentage.com easy to use for everyone, including people with disabilities. We aim to follow the Web Content Accessibility Guidelines (WCAG) 2.1 Level AA — for example, making the site work with keyboards and screen readers. If you find anything hard to use, please let us know.

Changes to these terms

We may update these Terms at any time. When we do, we'll update the date at the top of this page. If you keep using the site after changes are posted, you accept the new Terms. If you disagree, please stop using the site.

Governing law and dispute resolution

These Terms follow the law. If you're in a place where using this site is not allowed, please don't use it.

If there's ever a disagreement about these Terms or how you used the site, we ask that you contact us first to sort it out. If we can't resolve it within 30 days, either side can take it to the appropriate legal process.

These Terms don't take away any rights you already have under your country's consumer or data protection laws.

Entire agreement

These Terms and our Privacy Policy together are the full agreement between you and calpercentage.com about how you use the site. They replace any earlier agreements we may have had.

Contact

If you have questions about these Terms, spotted a problem, or need help understanding anything, please reach out via our contact page. We aim to reply within 5 business days.