Legal
Terms of Service
The rules for using this site, written in plain language. Browsing any page or using any calculator here means agreeing to what's below — there's nothing complicated hiding in it.
Agreement
Acceptance of These Terms
By visiting this site or using any of its calculators, you're agreeing to these terms. There's no account to create and no click-through box to check beyond browsing normally — if a page or feature doesn't sit right with you, the simplest option is just not to use it. These terms apply to everyone who arrives here, whether by a search result, a link from another page on the site, or a bookmark from an earlier visit, and they cover the site as a whole rather than any single page. They sit alongside, not in place of, the site's privacy policy, which covers data and cookies specifically.
Educational Use
Educational Purpose and No Warranty
Provided As Is, for Learning
Every calculator on this site exists to help you understand fraction and mixed-number arithmetic, not to serve as a certified reference for decisions that carry real consequences. Under the hood, the math runs on exact rational arithmetic — fractions are kept as numerator-and-denominator pairs and reduced algebraically, rather than converted to floating-point decimals that can quietly round wrong. That's a deliberate design choice, and it's a large part of why the results here tend to be reliable. Even so, no software is guaranteed bug-free, and these tools are offered "as is," without a warranty that every result, every edge case, and every future update will be perfect.
Not a Substitute for Professional Judgment
Don't treat any result here as the sole basis for a decision where being wrong would actually cost you — a financial calculation, a medical dosage, a legal filing, a construction measurement, or anything else safety-critical. Double-check numbers that matter against another source, and consult a qualified professional where the stakes call for one. That's just sensible practice for any free online tool, not a caution unique to this one.
Fair Use
Acceptable Use
Normal use is exactly what it sounds like: type numbers into a calculator, read the results, follow a link to another page, bookmark a tool you use often, or cite a worked example in your own homework or writing. All of that is welcome — it's what the site is built for, and referencing or linking to a page here needs no permission at all.
What isn't welcome is treating the site as raw material rather than a tool: scraping it aggressively enough to strain the servers, attempting to route malware or malicious scripts through it, or republishing entire pages word-for-word without permission. Quoting a short example or linking back is fine; copying whole pages and presenting them as your own isn't.
Ownership
Intellectual Property
The specific text, page design, and code that make up this site belong to its operator and aren't licensed for wholesale reuse elsewhere. That said, none of this touches the mathematics itself — nobody owns the rules of fraction arithmetic, and nothing here restricts you from teaching, learning, or writing about how to add, subtract, multiply, or divide fractions and mixed numbers in your own words. The ownership claim covers this particular expression of that math — the wording, examples, and interface — not the underlying subject.
No Accounts
No Accounts, No Purchases
There's currently nothing to sign up for and nothing to buy on this site: no accounts, no subscriptions, no in-app purchases, no premium tier behind a paywall. Because there's no payment step, there's also nothing to cancel and nothing to refund — every calculator here is free to use, in full, without creating a profile or handing over payment details.
Updates
Changes to These Terms
These terms may be updated occasionally as the site changes — new calculators, new pages, or just clearer wording. Whatever the current version says is what applies, and it's always readable at this same address, so there's no separate archive to dig through. Continuing to use the site after an update means accepting whatever the terms say at that time, which is why it's worth a quick re-read now and then rather than assuming nothing has moved.
Contact
Questions About These Terms
If anything here is unclear, or you want to ask about a specific use case before relying on it, reach out through the contact page or email contact@mixednumber-calculator.com. That's the fastest way to get a straight answer, and it's the same channel used for feedback on the calculators themselves.