Terms of Service

1.Acceptance

By using the Site you agree to these terms. If you do not agree, please do not use the Site — there is no account to cancel and nothing to delete on our side, so leaving is as simple as closing the tab.

2.What the Site provides

The Site offers free tools for belt drive planning: the belt length calculator with its exact tangent geometry, open and crossed drive modes, per-field unit mixing, V-belt section conversion, timing-belt tooth counting, speed and ratio math, stock designation matching, engineering warnings and a live drive diagram — plus a library of drive knowledge in the guides hub. All tools are provided "as is" without warranties of any kind, express or implied, including fitness for a particular purpose or accuracy of results. A result is a planning figure, and the disclaimer is part of these terms by reference.

3.Not mechanical engineering advice

Results produced by the Calculator are geometric planning references, not mechanical engineering deliverables. They do not establish power capacity, fatigue life, safety factors, bearing loads, shaft strength or code compliance, and they are not a substitute for a qualified engineer's judgment, a manufacturer's drive handbook, or the supplier who will stand behind the part. Real drives carry conditions no calculator sees — torque spikes, starts per hour, ambient heat, abrasive dust, the actual duty cycle. For high-power transmissions, safety-relevant machinery (flywheels, hoists, presses, elevating equipment), or any drive whose failure can injure someone, consult a mechanical engineer and the belt manufacturer's application engineering team. You assume full responsibility for any decision made using the Site's output, including what you purchase and what you build.

4.Acceptable use

5.Your content and your data

The Site stores nothing about you on our servers. Calculator inputs live in your browser only, and share links travel wherever you send them. Messages you send via the contact page are handled per the privacy policy. You retain all rights to anything you write to us; we retain the right to quote it (anonymized) when it corrects our reference data — section dimension and registry fixes have literally come this way.

6.Intellectual property

The Site's design, text, and code are owned by BeltCalculator.com or its licensors. The section registries and practical limits used by the Calculator summarize publicly available industry-standard references (RMA/IP-20 datum dimensions, ISO 4184 metric length series, ISO 5296 timing pitches, published drive design handbooks) and are offered for personal, non-commercial planning use. Belt and pulley designations remain the trademarks of their respective manufacturers. If you believe content here infringes your rights, write to us with specifics and we'll address it promptly.

7.Limitation of liability

To the maximum extent permitted by law, BeltCalculator.com and its operators are not liable for any indirect, incidental, or consequential damages arising from use of the Site, including parts purchases, machine downtime, equipment damage, or decisions made in reliance on calculator output. This clause is deliberately blunt: the tool is free, and its price in liability matches.

8.Changes & governing law

We may revise these terms at any time; continued use after changes constitutes acceptance, and the effective date above moves with any material revision. These terms are governed by the laws applicable at the operator's principal place of business, without regard to conflict-of-law rules. Questions about any clause are welcome at the contact page.