About RV TowCalc
We built the towing calculator we wished existed when we started RVing—one that does not just give you a single number, but shows you exactly where you stand on every critical safety dimension.
Our Mission
Every year, thousands of RV owners hit the road without fully understanding whether their truck can safely handle their trailer. The result: white-knuckle driving, premature equipment wear, insurance claim denials, and in the worst cases, accidents.
The problem is not that the information does not exist—it is that it is scattered across door jamb stickers, owner's manuals, manufacturer towing guides, and forum posts. And even when you find the numbers, figuring out what they mean for your specific setup is a math problem most people get wrong.
RV TowCalc exists to solve that. We consolidate the key specifications—towing capacity, payload, GVWR, GCWR, and tongue weight—into one place, run the math for you, and give you a clear, honest safety assessment with a simple traffic-light system: green means go, yellow means pay attention, red means stop.
What Makes Us Different
Real vehicle data, not generic estimates
Our vehicle database includes trim-level specifications sourced directly from manufacturer towing guides. A Ford F-150 XLT with the 3.5L EcoBoost has very different towing capabilities than an XL with the 2.7L—we reflect that. Most online calculators give you a single "F-150 can tow 13,000 lbs" number, which is misleading.
Six-dimensional safety analysis
Towing capacity alone is not enough. We check all five critical dimensions: towing capacity, payload capacity, GVWR (truck weight), GCWR (combined weight), and tongue weight percentage. Payload is the #1 blind spot for RV owners—many trucks that "can tow 13,000 lbs" run out of payload at 8,000 lbs of trailer.
SAE J2807 compliant methodology
Our calculations follow the SAE J2807 standard, which is the industry-accepted methodology for determining trailer weight ratings. We use conservative safety thresholds: 80% of tow rating for the "safe" zone on towing capacity, and 90% for payload, GVWR, and GCWR. These buffers account for real-world variables like wind, grades, and emergency maneuvers.
Independent and honest
We are not affiliated with any vehicle manufacturer, RV dealer, or towing equipment brand. We do not sell anything. If your numbers come back red, we tell you. We would rather lose a user to honesty than gain one through false confidence.
Who We Serve
RV TowCalc is built for anyone who tows a trailer behind a truck or SUV and wants to know—with confidence—that their setup is safe. That includes:
- First-time RV buyers trying to figure out if their current truck can handle the trailer they are considering.
- Experienced RVers who want to verify their numbers after adding gear, passengers, or upgrading to a heavier trailer.
- Truck shoppers comparing payload and towing specs across trim levels to find the right vehicle for their towing needs.
- Fifth wheel owners dealing with the more complex pin weight and payload calculations that conventional travel trailer calculators do not handle well.
How We Make Money
RV TowCalc is a free tool. We plan to sustain the site through advertising (Google AdSense) and, in the future, affiliate partnerships with retailers of towing-related equipment. We will never accept payment from manufacturers to alter, inflate, or selectively present vehicle specifications.
Advertising does not influence our calculations or safety assessments. The math is the math—it runs the same way whether you click an ad or not.
Contact
Found a bug? Have a suggestion for a vehicle we should add to the database? Want to report a data error? We want to hear from you.
Reach us at: contact@rvtowingcalc.com
Important:RV TowCalc is an informational tool, not a substitute for professional advice. Always verify your numbers against your vehicle's door jamb sticker and confirm actual weights at a CAT scale. See our Disclaimer and Data Sources pages for details.