Legal
Last updated: 2026-08-30
Using numerosaletras.org ("the site") means accepting these terms. They are short, and they say what you would expect.
A set of free online tools that convert numbers into words and back, generate code for spreadsheets and documents, and perform some related text operations. Everything runs in your browser. There is no account, no registration and no charge.
You may use the tools freely for personal, educational, professional or commercial purposes. The results — the words a converter produces, the code a generator writes — are yours to use without attribution or restriction.
What you may not do is attempt to disrupt the site, use automated systems to place unreasonable load on it, or present a copy of it as your own service.
The tools and the explanations on this site are provided for information. They are careful and they are tested, and they are still not a substitute for checking a document yourself. The site is provided as is, without warranty of any kind.
Conventions differ between countries, institutions and style guides, and they change. What a particular bank, registry, court or publisher will accept is a question about them, not about this site.
To the fullest extent permitted by law, we accept no liability for any loss arising from use of the site or reliance on its output. On a check, a contract, a filing or anything else that binds you, read the amount before you sign it.
The design, the written explanations and the source code of the site belong to their authors. You may quote and link to the pages; reproducing a page wholesale is not permitted.
The output of the tools is a different matter. A number written in words is not copyrightable, and the code a generator produces is yours to paste wherever you like, including in commercial work.
We aim to keep the site up and make no promise about it. It may be unavailable for maintenance, because of a problem at the host, or for reasons outside our control. Since everything runs in your browser, a page already loaded keeps working even if the site itself goes down.
Some pages link to external sites for reference. We do not control them and are not responsible for their content or their privacy practices.
The site carries advertising, which is what pays for it. Ads are served by Google AdSense and we do not select them individually. An ad appearing here is not an endorsement.
These terms may change; the date at the top of the page changes with them. Continuing to use the site after a change means accepting the revised terms.
Questions about these terms: hola@numerosaletras.org. The privacy policy covers what is and is not collected.