Terms of Service

Last updated: February 17, 2026

Acceptance of Terms

By using ProCalc.ai, you agree to these terms. If you don't agree, please don't use the site.

Description of Service

ProCalc.ai provides free online calculators for construction, materials, and general calculations. Some features require a paid Pro account.

Accuracy Disclaimer

Calculations are provided for informational purposes only. While we strive for accuracy, ProCalc.ai is not a substitute for professional engineering advice. Always verify critical calculations with a qualified professional.

User Accounts

• You're responsible for maintaining the security of your account
• One account per person
• We may terminate accounts that violate these terms

Pro Accounts

• Billed monthly ($9.99/mo) or annually ($79/yr) via Stripe
• Cancel anytime — access continues through the end of your billing period
• No refunds for partial billing periods
• We reserve the right to change pricing with 30 days notice

Acceptable Use

Do not:

• Use automated tools to scrape calculators or content
• Attempt to circumvent rate limits or Pro feature gates
• Submit harmful, illegal, or abusive content through any input
• Reverse-engineer our AI or calculation systems

Intellectual Property

All content, design, and code on ProCalc.ai is our property. Calculator results are yours to use. Free users may share results with ProCalc.ai attribution.

Limitation of Liability

ProCalc.ai is provided "as is" without warranty. We are not liable for any damages resulting from the use of our calculators. Do not use our calculations as the sole basis for structural, safety-critical, or high-stakes decisions.

Sponsor Content

Sponsored content on ProCalc.ai is clearly labeled. We are not responsible for the products or services of our sponsors.

Changes to Terms

We may update these terms. Continued use after changes constitutes acceptance.

Governing Law

These terms are governed by the laws of the State of Florida, United States.

Contact

Questions? Email us at hello@procalc.ai.