Terms of Use
By using FiberCalc, you agree that calculators are provided “as is” for educational and planning purposes. Results are estimates and may not match a specific pattern, yarn lot, fabric width, or longarm shop requirement. Prefer a published pattern’s tested yardage or cutting chart when it conflicts with a tool output.
Planning estimates only
You are responsible for verifying critical measurements before cutting fabric or purchasing non-returnable supplies. We are not liable for project outcomes, material waste, dye-lot mismatches, or commercial losses. Tools do not provide legal, medical, or professional design advice.
Corrections policy
If you find a formula error, broken citation, or outdated Craft Yarn Council link, email hammadiqbal117@gmail.com with the page URL and inputs used. Material corrections are logged on the methodology correction log.
Content and embeds
Content is owned by FiberCalc unless otherwise noted. You may embed tools with credit per the embed instructions on each tool page. Do not scrape the site in ways that degrade service or violate applicable law. Do not remove attribution when republishing worked examples.
Privacy and cookies
Calculator math runs in your browser. Optional analytics and advertising cookies are described in the privacy policy. Accepting or declining the cookie bar does not change calculator results.
Advertising
The site may display Google AdSense ads after publisher approval. Ads are labeled and should not be clicked except intentionally. Do not encourage accidental clicks. Funding and cookie details are also summarized on About and Privacy.
Availability
Tools may change, move, or be withdrawn as formulas and sources are updated. We strive for accurate arithmetic and cited standards, but we do not warrant uninterrupted access or error-free estimates.
Governing scope
These terms apply to public use of FiberCalc calculators, guides, and reference charts. If a provision is found unenforceable, the remaining terms still apply. Continued use after a posted update means you accept the revised terms; the “Last updated” date above reflects the latest review.
Contact: hammadiqbal117@gmail.com · Contact form