Tow Calculators

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Trailer Weight Calculator

Dry weight is not loaded trailer weight. Add only loads excluded from dry/UVW, then optionally compare the estimate with trailer GVWR.

Build a loaded trailer estimate

Units: lb

What does your dry/UVW starting figure already include? Check its manufacturer definition, then add only excluded cargo, equipment and consumables below.

Check exactly what the manufacturer’s figure includes before adding anything.

Gear, food and supplies not included in dry/UVW. Enter 0 if none.

Only options, batteries and other equipment excluded from the starting figure. Enter 0 if none.

Enter their combined weight in lb, not gallons. Add only amounts excluded from dry/UVW. Enter 0 if none.

Optional

From the trailer label. Leave blank for a weight estimate without a rating check.

Enter 0 for loads you are not adding. Results stay in this page.

Results

Your focused comparison appears here.

Enter the values above, then select Calculate. An estimate will remain labeled as an estimate.

Dry / UVW is a starting point, not trip weight.

A trailer’s dry or unloaded vehicle weight (UVW) describes a manufacturer-defined unloaded condition. Your loaded trailer can also carry cargo, water, propane and added equipment. Verify the inclusions for the exact figure you enter: brochure weights and the as-built trailer label may not describe the same condition.

Formula and weight basis

Added load = trailer cargo + excluded equipment + excluded fluids/consumables

Estimated loaded trailer weight = dry/UVW starting weight + added load

Trailer GVWR remaining = trailer GVWR − estimated loaded trailer weight

Only add things omitted from the starting figure. Enter water, propane and other consumables as their combined weight in pounds, not as gallons or tank capacity. This version performs no fluid conversion. Trailer GVWR is optional: leaving it blank produces a weight estimate and a clearly unchecked rating comparison.

Worked example

A 5,200 lb dry starting value plus 600 lb of cargo, 100 lb of excluded equipment, and 300 lb of excluded fluids gives an estimated 6,200 lb loaded trailer. Added load is 1,000 lb; an entered 7,000 lb trailer GVWR leaves 800 lb. This assumes none of the additions are already in the starting figure.

Illustrative scenario, not a manufacturer specification or approval.

How to interpret the result

The result is an estimate, even if the dry figure came from a manufacturer. It does not measure the trailer or determine how added cargo changes tongue weight. Compare a trip-ready scale weight with the trailer label, then check vehicle and hitch ratings separately.

Common mistakes

  • Using GVWR as if it were measured loaded trailer weight.
  • Adding propane, batteries or options already included in the starting weight.
  • Entering gallons into a field labeled lb.
  • Leaving out cargo carried in tanks or storage compartments.

Full Tow Calculator — compare the available vehicle, trailer and hitch limits together.

Browse all towing calculators
  • Dry Weight vs GVWRTurn an unloaded starting weight into a trip estimate and compare it with the trailer’s rating.
  • What Is UVW on a Trailer?Decode an RV weight label and check what the unloaded figure actually includes.
Browse all towing guides

Frequently asked questions

Does dry weight include propane or batteries?

Check your manufacturer’s definition and the specific trailer label. Inclusions vary with the starting figure. This tool does not silently assume those items are included or excluded.

Can I enter water in gallons?

Not in this version. Enter the additional water weight in lb, along with other excluded fluids and consumables. No hidden gallons-to-weight conversion is performed.

What if I already have a loaded scale weight?

Use that value in the full Tow Calculator or a tongue/pin estimate. This tool is for building an estimate from an unloaded starting point.

Sources and scope

Primary guidance reviewed September 28, 2026. Manufacturer labels and the manuals for your exact equipment take precedence.