Terms of Use

Acceptance of terms

By accessing and using Archery Calculators (archerycalculators.com), you accept and agree to be bound by these Terms of Use. If you do not agree to these terms, do not use this website.

These terms apply to all visitors, users, and others who access or use the service. Your use of the website constitutes your agreement to these terms, our Privacy Policy, and any other policies referenced herein.

Use of calculators

Permitted use: You may use our calculators for personal, non-commercial purposes to help determine arrow spine, draw length, draw weight, and other archery specifications. You may share links to our calculators with others.

Prohibited use: You may not:

• Copy, reproduce, or republish our calculators or content on other websites without permission
• Frame or embed our calculators in other websites to make it appear they are your own
• Reverse engineer, decompile, or attempt to extract source code from our calculators
• Use automated tools (bots, scrapers) to access the site in ways that burden our servers
• Use our calculators for any illegal purpose or in violation of any laws
• Attempt to interfere with or disrupt the service or servers

Commercial use: If you wish to integrate our calculators into a commercial product, embed them on a commercial website, or use them in ways not covered by personal use, please contact us to discuss licensing.

Disclaimers and warnings

No warranties

THE CALCULATORS AND CONTENT ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

We do not warrant that:

• The calculators will be accurate, reliable, or error-free
• The service will be uninterrupted or available at all times
• Any errors or defects will be corrected
• The calculators are suitable for your specific bow, arrows, or shooting style

Estimates only

All calculator results are estimates based on industry-standard formulas and general principles. Actual specifications needed for your specific setup may vary based on:

• Your individual shooting form and technique
• Bow tuning and condition
• Arrow component variations (nocks, inserts, vanes)
• Environmental conditions (temperature, altitude)
• Manufacturing tolerances in your equipment

Not professional advice

These calculators do not constitute professional archery advice, coaching, or equipment recommendations. We are not certified archery instructors, pro shop technicians, or bow manufacturers. Our calculators provide mathematical estimates based on your inputs, not personalized professional guidance.

Always verify with professionals

Before purchasing equipment or making significant changes to your archery setup, consult with a certified archery pro shop or coach. They can:

• Physically measure your draw length and draw weight
• Watch you shoot and identify form issues
• Test arrows with your specific bow
• Tune your equipment properly
• Provide hands-on expertise our calculators cannot

Safety warnings

Archery involves inherent risks. Improperly matched arrows can:

• Shatter on release, causing injury
• Fly erratically and strike unintended targets
• Damage your bow or equipment
• Fail to penetrate game animals humanely (hunting)

Always follow manufacturer safety guidelines. Check arrows for cracks or damage before each use. Never shoot arrows that are too short, too light, or damaged. Wear appropriate safety equipment when shooting.

Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, ARCHERY CALCULATORS, ITS OPERATORS, CONTRIBUTORS, AND AFFILIATES SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS OR REVENUES, WHETHER INCURRED DIRECTLY OR INDIRECTLY, OR ANY LOSS OF DATA, USE, GOODWILL, OR OTHER INTANGIBLE LOSSES RESULTING FROM:

• Your use or inability to use the calculators
• Any errors or inaccuracies in calculator results
• Equipment purchased based on calculator recommendations
• Injuries sustained while using equipment selected with our calculators
• Damage to property or equipment
• Any other matter relating to the service

You assume all risks associated with using our calculators and any actions you take based on the results. This includes purchasing equipment, adjusting bow settings, selecting arrows, or making any archery-related decisions influenced by our calculators.

Some jurisdictions do not allow the exclusion of certain warranties or limitation of liability for incidental or consequential damages. In such jurisdictions, our liability will be limited to the maximum extent permitted by law.

Accuracy and errors

We strive to provide accurate calculators based on industry-standard formulas from manufacturers' spine charts, AMO standards, and physics-based calculations. However:

• Formulas may be simplified for general use
• Manufacturer spine charts vary between brands
• New bow technologies may require updated calculations
• Errors or bugs may exist in our code
• Your inputs may not match standard assumptions

If you discover an error: Please contact us with specific details (calculator name, inputs used, expected vs. actual result). We investigate all reported errors and fix confirmed issues promptly. However, we make no guarantee that all errors will be corrected immediately or that the service will be error-free.

No guarantee of results: Even with accurate calculations, there is no guarantee that:

• Recommended arrow spine will be perfect for your bow
• Calculated draw length will be ideal for your form
• Estimated arrow speed will match your actual chronograph readings
• Hunting setups will meet your specific state's legal requirements

Test before you trust: Always buy sample arrows (3-6 arrows) in the recommended spine to test before purchasing a full dozen. Verify all measurements with professional tools. Confirm hunting setups meet your state's regulations.

Third-party links and affiliates

Affiliate relationships

This website contains affiliate links to Lancaster Archery, 3Rivers Archery, Bass Pro Shops, Cabela's, Archery Country, Amazon, and other retailers. When you click these links and make purchases, we may earn commissions at no extra cost to you.

Affiliate links are clearly marked. We provide links to multiple retailers so you can compare prices and selection. Our calculator recommendations are not influenced by which retailers pay higher commissions.

No endorsement of products

Links to products or retailers do not constitute endorsements. We provide links for convenience based on calculator results (e.g., linking to 500 spine arrows after calculating 500 spine recommendation). We do not personally test every product linked or guarantee its quality, safety, or suitability.

Third-party terms apply

When you click affiliate links and visit retailer websites, you are subject to those retailers' terms of use, privacy policies, and return policies. We are not responsible for:

• Product quality, availability, or pricing
• Shipping issues or delivery delays
• Customer service problems with retailers
• Returns, refunds, or exchanges
• Privacy practices of third-party websites

Purchase at your own risk. Read product descriptions, reviews, and specifications carefully before buying. Verify that products meet your needs and your state's legal requirements (especially for hunting equipment).

Intellectual property

The content on this website, including calculators, text, graphics, logos, and software, is owned by or licensed to Archery Calculators and is protected by copyright and trademark laws.

You may:

• Use the calculators for personal purposes
• Share links to our calculators on social media, forums, or websites
• Reference our calculators in blog posts or articles with proper attribution

You may not:

• Copy calculator code or functionality for your own website
• Republish our content without permission
• Remove or alter copyright notices or attributions
• Create derivative works based on our calculators

Interested in licensing? If you want to integrate our calculators into your commercial product or website, contact us to discuss licensing options.

Changes to terms

We reserve the right to modify these Terms of Use at any time. Changes will be posted on this page with an updated "Last updated" date. Significant changes will be noted prominently on the website.

Your continued use of the website after changes are posted constitutes acceptance of the modified terms. If you do not agree to the new terms, stop using the website.

We recommend reviewing this page periodically to stay informed of any changes, especially if you use the calculators frequently or rely on them for important equipment decisions.

Governing law

These Terms of Use shall be governed by and construed in accordance with the laws of the United States and the state in which Archery Calculators is operated, without regard to conflict of law provisions.

Any disputes arising from these terms or your use of the website shall be resolved in the courts of competent jurisdiction in that location. By using this website, you consent to the jurisdiction of such courts.

Severability

If any provision of these Terms of Use is found to be invalid or unenforceable by a court of law, the remaining provisions shall remain in full force and effect. The invalid provision shall be replaced with a valid provision that most closely matches the intent of the original provision.

Contact

Questions about these Terms of Use? Contact: [email protected]