Boat trailer payload audit calculator

Calculate loaded trailer mass and trailer mass margin with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use loaded trailer mass and trailer mass margin to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Boat actual mass (kg)
1500
Trailer actual tare (kg)
450
Gear aboard (kg)
150
Trailer plated total mass limit (kg)
2200
Tow vehicle entered towing limit (kg)
2500
Loaded trailer mass (kg)
2100
Trailer mass margin (kg)
100
Tow-limit margin (kg)
400

Try another scenario

Boat actual mass (kg)
1650.0000000000002
Trailer actual tare (kg)
450
Gear aboard (kg)
150
Trailer plated total mass limit (kg)
2200
Tow vehicle entered towing limit (kg)
2500
Loaded trailer mass (kg)
2250
Trailer mass margin (kg)
-50
Tow-limit margin (kg)
250
Calculation method

Calculation method

Loaded trailer mass (kg)

Actual combination=boat+trailer+gear; subtract from supplied limits.

Trailer mass margin (kg)

Actual combination=boat+trailer+gear; subtract from supplied limits.

Tow-limit margin (kg)

Actual combination=boat+trailer+gear; subtract from supplied limits.

Symbols and units
a
Boat actual mass (kg)
b
Trailer actual tare (kg)
c
Gear aboard (kg)
d
Trailer plated total mass limit (kg)
e
Tow vehicle entered towing limit (kg)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • No axle, nose weight, license, braking or vehicle train-weight certification. Supported limits: All required fields must be finite values of the exact declared type and within displayed bounds. Lists contain1–1000 finite numbers. JSON tables are numeric rectangular rows, at most100 rows and30 columns; individual tools have stricter shape/domain constraints. No axle, nose weight, license, braking or vehicle train-weight certification.
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