Free RV Towing Capacity Calculators Online
Except as noted, none of the other free web-based RV towing calculators below consider the manufacturer’s SAE J2807 TWR calculation methodology. When the SAE J2807 TWR standard is omitted, there is the potential for the maximum towing capacity range to exceed the vehicle’s safe towing capacity. In some cases, the max towing capacity is abnormally reduced. One should never exceed the TWR and neither the GVWR, GCWR, GAWRs, as well as the tire and hitch ratings.
- You are welcome to use any of the following listed calculators at your own risk.
- You get what you pay for.
http://towcalculator.com/
(For conventional trailers only.)
Assumes all conventional trailer tongue weights will be approximately 12.5%.
http://towingplanner.com/Calculators/TowingScaledWeights
(For conventional and 5th wheel trailers.)
Calculates towing capacity range based on available payload.
http://towingplanner.com/Calculators/TowingPayloadEstimate
(For conventional and 5th wheel trailers.)
Calculates towing capacity range based on vehicle’s sticker cargo carrying capacity (CCC).
https://www.canitowthis.com
(Not designated)
Calculates towing capacity using the GVW, GCWR and payload CCC.
http://mcneillsonwheels.com/trailer-towing-calculator
(Not designated)
Does not work.
https://towing-calculator.com
No calculator on the website as of 6/12/21.
https://brandonreid.github.io/truck-towing-capacity/index.html
(Not designated)
Does not calculate towing capacity based on tow vehicle weight inputs. Note: This calculator is based on the spreadsheet provided by Marc at https://www.keepyourdaydream.com/payload/
https://l2sfbc.com/towing-weights-calculator
(For conventional trailers only.)
This European model calculates towing capacity using the GVW, GCWR, and hitch capacity.
https://www.fifthwheelmagazine.com/new-tow-calc.aspx
(For fifth wheel trailers only.)
Calculates towing capacity using the GVW, GCWR, GVWR and payload.
http://changingears.com/rv-sec-calc-trailer-weight-tt.shtml
(For conventional trailers only.)
The only correct result is when selecting 10% tongue weight percentage. When selecting 11% or higher, the maximum trailer weight is reduced more than it should be. This calculator unnecessarily includes an input for GAWR. Includes TWR input.
http://changingears.com/rv-sec-calc-trailer-weight-fw.shtml
(For fifth wheel trailers only.)
Includes TWR input. This calculator unnecessarily includes an input for GAWR.
Do you know of an RV towing calculator not listed? Please let me know.
Last update: June 12, 2021