Terms of Service

Introduction

Welcome to LeverLab (“we,” “our,” or “us”). These Terms of Service (“Terms”) govern your use of our website at worldlever.com and all associated calculators, tools, and services (collectively, the “Service”).

By accessing or using our Service, you agree to be bound by these Terms. If you disagree with any part of these terms, then you may not access the Service.

Acceptance of Terms

By accessing, browsing, or using LeverLab, you acknowledge that you have read, understood, and agree to be bound by these Terms and our Privacy Policy, which is incorporated herein by reference.

We reserve the right to update or modify these Terms at any time without prior notice. Your continued use of the Service after any such changes constitutes your acceptance of the new Terms.

Informational Use & Verifying Results

LeverLab provides estimates and tools for general educational and informational purposes only. Calculator results, worked examples, and technical information on the Service model idealized, frictionless (or simplified-friction) physics and may not reflect every real-world factor, and the Service is not a substitute for advice from a qualified engineer. Real machines, materials, and loads depend on many factors. By accessing or using the Service, you agree to treat results as general educational content rather than a guarantee of results, and to verify any load-bearing, safety-critical, or commercial figure with a qualified engineer or the equipment’s manufacturer before you rely on it. All content on this site is general informational and educational content only and is NOT professional engineering advice; results vary.

Description of Service

LeverLab provides free, practical simple-machine calculators and educational resources, including:

• Lever mechanical-advantage calculator
• Pulley mechanical-advantage calculator
• Gear ratio calculator
• Inclined plane force calculator
• Wheel and axle torque calculator and screw mechanical-advantage calculator
• Educational content, worked examples, and best practices

All tools are provided free of charge. We reserve the right to modify, suspend, or discontinue any part of the Service at any time.

User Responsibilities

Appropriate Use

Users of our tools and website agree to:

• Use the tools in good faith and for legitimate educational or personal-project purposes
• Provide accurate information when using our calculators
• Not attempt to disrupt or compromise the website’s functionality
• Not use automated systems to access our tools excessively
• Respect intellectual property rights
• Not use the tools for any illegal or unauthorized purpose

Check With a Professional When Needed

You are responsible for using your own judgment, and for seeking advice from a qualified engineer, before applying calculator results to a real, load-bearing, or safety-critical build. Our tools are designed to assist and inform, not to replace professional engineering advice or your own judgment.

Tool Accuracy and Disclaimers

Calculation Accuracy

Our calculators and tools are provided for informational and educational purposes only. While we strive for accuracy, we cannot guarantee that all calculations will be error-free or suitable for your specific needs. Results are estimates based on standard, idealized mechanics formulas and the figures you enter; actual outcomes may vary based on real-world friction, material properties, wear, and manufacturing tolerances.

No Guarantee of Results

LeverLab makes no warranties, expressed or implied, and disclaims all other warranties including implied warranties of merchantability, fitness for a particular purpose, or non-infringement of intellectual property or other violation of rights.

Engineering & Safety Decisions

Calculator output is general and informational only and is not a substitute for advice from a qualified engineer. Real machines, materials, and loads depend on many factors. Always treat results as general guidance, not a guarantee of results, use your own judgment, and verify any load-bearing or safety-critical figure with a qualified professional before you build, buy, or rely on a mechanism.

Intellectual Property Rights

All content on this website, including but not limited to text, graphics, logos, tools, calculators, and software, is the property of LeverLab or its content suppliers and is protected by applicable copyright laws.

You may use our tools for personal, non-commercial purposes only. Under this license you may not modify or copy the website materials, use them for any commercial purpose or public display, attempt to reverse engineer any software, or remove any copyright or proprietary notations.

Privacy and Data Protection

Your use of our website and tools is also governed by our Privacy Policy. All tool calculations happen in your browser and are not transmitted to us.

Limitation of Liability

In no event shall LeverLab or its suppliers be liable for any damages (including, without limitation, damages for loss of data, materials, or project costs) arising out of the use or inability to use the materials on LeverLab’s website or tools, even if LeverLab or an authorized representative has been notified orally or in writing of the possibility of such damage.

Third-Party Links

LeverLab has not reviewed all of the sites linked to its website and is not responsible for the contents of any such linked site. The inclusion of any link does not imply endorsement by LeverLab. Use of any such linked website is at your own risk.

Prohibited Uses

You may not use our website or tools:

• For any unlawful purpose or to solicit others to perform unlawful acts
• To violate any international, federal, or local regulations, rules, laws, or ordinances
• To infringe upon or violate our intellectual property rights or those of others
• To submit false or misleading information
• To upload or transmit viruses or any other type of malicious code
• To collect or track the personal information of others
• To spam, phish, spider, crawl, or scrape

Governing Law

These terms and conditions are governed by and construed in accordance with the laws of the United States, and you irrevocably submit to the exclusive jurisdiction of the courts in that jurisdiction.

Modifications

LeverLab may revise these Terms of Service at any time without notice. By using this website and our tools, you are agreeing to be bound by the then-current version of these Terms.

Contact Information

If you have any questions about these Terms of Service, please contact us:

• By email: support@worldlever.com
• Via our contact page