Complete ASCE 7-compliant wind load analysis in 2–15 minutes. A 100% permit-approval record across 24 years. Used by thousands of engineers, architects, and contractors since 2002.
Three exclusive capabilities that solve your biggest compliance headaches.
The ONLY wind load calculator that knows what certifications YOUR state requires AND tracks your manufacturers/models to verify compliance automatically. Stop juggling spreadsheets and missing certifications.
Never miss a local wind requirement again. We cross-reference every U.S. ZIP code against ASCE 7, state amendments, county ordinances, and special wind regions so your design meets every applicable standard.
24 years in business, online since 2006. A 100% permit-approval record. Built by the engineers who pioneered online wind load calculation — and backed by our in-house Florida P.E. Real people who know ASCE 7 cold.
Professional ASCE 7-22 calculators organized by component type. Subscribe to what you need.
Components & cladding for vertical walls and openings.
All roof configurations and slopes (C&C analysis).
Photovoltaic systems and mounting configurations.
Full MWFRS analysis — directional & envelope methods.
Unique structures and special applications.
Try before you subscribe — every U.S. ZIP, no signup.
From project setup to permit-ready report in minutes.
Enter basic project information and location. Takes 30 seconds.
Automatic design wind speed detection from project location, or enter manually.
Define building dimensions. Smart validation prevents errors.
Specify mean roof height. The calculator selects the correct ASCE figures.
Add hills or escarpments if applicable. Skip if flat terrain.
Instant zone-by-zone pressures. All load cases calculated automatically.
Verify component compliance. Generate a permit-ready report in one click.
Fast, accurate calculations with complete documentation. Spend less time on repetitive calcs and more on complex design.
Professional reports for permit sets without hiring consultants. Verify manufacturer specs quickly during design.
Easy-to-use interface requires no engineering degree. A guided workflow ensures code compliance.
Verify supplier certifications before purchase. Catch compliance issues early to avoid costly delays.
Quickly assess product compliance for projects and show customers why your products meet requirements.
Provide value-added wind load analysis to clients. Professional reports enhance your credibility.
See the workflow tailored to your role: Engineers · Architects · Consultants · Contractors
See why professionals are switching to our calculator.
| Feature | Our Calculator Best | Manual Method | Other Software |
|---|---|---|---|
| Time per project | 2–15 minutes | 4–8 hours | 1–2 hours |
| Learning curve | < 1 hour | Months | Days |
| ASCE 7-22 compliance | 100% current | Error-prone | May be outdated |
| Automatic code updates | Included | Buy new books | Additional cost |
| State certifications | FL, LA, NC, SC, HI | Manual tracking | None |
| Wind speed lookup | By address / ZIP | Manual maps | Manual |
| GCp coefficient calc | Logarithmic interpolation | Manual interpolation | Table values only |
| Critical pressure ID | Automatic highlight | Manual review | Limited |
| Product database | Unlimited storage | Paper / spreadsheet | None |
| Cloud-based access | Any device | Office only | Desktop only |
| Professional reports | PDF, Excel, CSV | Create manually | Basic output |
| Engineering support | PE-licensed engineers | Hire a consultant | Tech support only |
| Coefficient citations | 100% — every value | None | Partial |
| Permit approval record | 100% over 24 years | Varies | Varies |
| Free trial | 7 days, full access | N/A | Limited demo |
No paid testimonials — just a verifiable 24-year track record.
Subscribe by category and access unlimited calculations.
12 calculators • Unlimited calculations • Engineering Reports (PDF, Excel, CSV, print)
15+ calculators • All roof types • Engineering Reports (PDF, Excel, CSV, print)
6 calculators • All mounting types • Engineering Reports (PDF, Excel, CSV, print)
No. The calculator is designed for engineers, architects, designers, and contractors. The interface guides you through each step with clear explanations and built-in ASCE 7-22 code references.
Yes — it works for all locations in the USA and its territories. We have special certification modules for Florida (FL# Product Approval, Miami-Dade NOA), Louisiana, North Carolina, South Carolina, and Hawaii. All other states use standard ASCE 7-22 provisions.
Our reports have a 100% permit approval rate across 24 years of operation. Building officials recognize and trust our professional format and complete documentation, and PE sign-and-seal is available for Florida projects on request.
Most users complete their first project within an hour. The intuitive step-by-step interface guides you through each calculation. Video tutorials are available if needed, but most find them unnecessary.
Automatic updates are included with your subscription. When new code provisions are released, we update the calculator. You always have access to the latest ASCE standards at no additional cost.
Yes — a 7-day free trial with full access to all features. No credit card required. Complete real projects and export reports during the trial to verify it meets your needs.
Yes — all plans include email support from licensed structural engineers with a guaranteed 24-hour response time. We provide code interpretation guidance and help with complex projects. Phone support is available with premium plans.
Yes — export to PDF, Excel, CSV, or print from any local printer. Unlimited exports are included — no per-report fees. Add your company logo for professional branding. Reports include an executive summary and detailed calculations.
Your projects are stored securely in the cloud with strong encryption. Multi-device access means you can work from desktop, tablet, or phone. We never share your data with third parties.
A 30-day money-back guarantee. If you're not satisfied for any reason, we'll refund your subscription — no questions asked. You can also cancel anytime with no penalties or long-term commitments.
Yes — each category is a separate subscription. Subscribe to Windows + Roofs + Solar, or just the categories you need. Mix and match based on your project types. Bundle pricing will be available soon.
Three key differentiators: (1) automatic wind speed lookup from the project location saves hours, (2) state-specific certification modules (FL#, NOA, etc.) that no competitor offers, and (3) product certification management with automatic compliance verification — plus 24 years of proven results.
Join the engineers, architects, and contractors using our ASCE 7-22 calculator since 2002. Start your free 7-day trial today — or run our free wind speed lookup first to verify a ZIP's design wind speed.
Our free wind speed lookup handles every U.S. ZIP and applies Florida Building Code jurisdictional overrides for Miami-Dade, Broward, and Collier counties. No signup. No meter.
Try the free calculator →