Copyright notice
Last updated: 3 November 2026
Ownership
© 2026 CalculStore. All rights reserved. The CalculStore name and logo, and the site's design, text, explanations and code, belong to us unless stated otherwise.
What you're welcome to do
- Use the calculators for personal or business purposes, free of charge.
- Link to any page on the site.
- Quote a short passage, with a link back to the page it came from.
- Use, keep and share your own results and the reports you download.
What needs our permission
- Copying the site, or large parts of its text or code, onto another website or product.
- Using the CalculStore name or logo in a way that suggests we endorse you.
- Selling or relicensing anything from the site.
To ask for permission, please contact us.
Formulas and methods
The mathematical formulas and published methods our calculators use belong to everyone. Each calculator's page names the people or sources behind its method where they're known.
Third-party material
The site uses these open-source works under their own licenses:
- Inter, Manrope and DM Mono fonts, under the SIL Open Font License.
- Lucide icons, under the ISC License.
Reporting a copyright concern
If you believe something on the site infringes your copyright, please contact us and choose the Copyright category. Tell us which page and material you mean, and show that you own the rights, and we'll look into it promptly.