Truck Payload Calculator
Find available payload from GVWR and curb weight, then subtract passengers and cargo.
What it does
Payload is the weight a truck can carry on top of its own weight. It covers people, cargo, tools, and anything bolted on after delivery. The number comes from two figures on the door jamb label: the gross vehicle weight rating (GVWR) and the curb weight. Subtract curb from GVWR and the result is the payload the manufacturer allows.
Curb weight is not the same as the weight of a bare chassis. It usually includes fuel, oil, coolant, and standard equipment. A heavy bumper, a winch, a bed rack, or a toolbox added by a dealer or owner reduces the remaining payload even though the GVWR stays the same. That is why two trucks with the same GVWR can have different real capacities.
The calculator takes the rated payload and subtracts passenger weight and cargo weight. A positive remainder is the capacity still available. A negative remainder means the truck is overloaded. The percentage shows how much of the payload the current load uses, which helps when planning a trip or comparing trim levels.
The GVWR is set by the manufacturer and is not the same as the sum of the axle ratings. A truck can be within its GVWR and still exceed one axle rating, especially when the load sits far behind the rear axle. For heavy loads, check the axle ratings and the tire load limits as well.
This page is for planning. The door jamb label for the specific vehicle is the final authority, and a commercial scale is the only way to know the real weight of a loaded truck.
How to use
- Choose imperial or metric units.
- Find the GVWR on the driver side door jamb label.
- Find the curb weight in the owner's manual or on the same label.
- Enter the combined weight of passengers and the driver.
- Enter the weight of cargo, tools, and accessories.
- Read the remaining payload or the amount by which the truck is over.
Formula
- GVWR
- Gross vehicle weight rating in lb or kg.
- curb
- Curb weight in the same unit as GVWR.
- people
- Combined passenger and driver weight.
- cargo
- Cargo, tools, and accessory weight.
A negative remaining value means the load exceeds the payload rating. The tool reports that as weight over rather than hiding it. Accessories added after the curb weight was measured should be counted as cargo for this estimate.
Worked example
Example: 7,000 lb GVWR with a 5,200 lb curb weight
Imperial defaults: GVWR 7,000 lb, curb weight 5,200 lb, passengers 300 lb, cargo 200 lb. The metric mirror is 3,175 kg, 2,359 kg, 136 kg, and 91 kg.
- Subtract curb weight from GVWR: 7,000 - 5,200 = 1,800 lb of payload rating.
- Add passengers and cargo: 300 + 200 = 500 lb of load.
- Subtract the load from the rating: 1,800 - 500 = 1,300 lb remaining.
- Divide the load by the rating: 500 / 1,800 = 0.2778, or 27.8 percent used.
- The tool shows a rating of 1,800 lb, 1,300 lb remaining, and 27.8 percent used.
- In metric mode the same truck shows 816 kg rated, 589 kg remaining, and 27.8 percent used.
- If cargo rises to 1,400 lb with 600 lb of passengers, the result becomes 200 lb over.
Reference table
| GVWR | Curb weight | Payload rating | Remaining after 500 lb |
|---|---|---|---|
| 6,000 lb | 4,800 lb | 1,200 lb | 700 lb |
| 7,000 lb | 5,200 lb | 1,800 lb | 1,300 lb |
| 8,500 lb | 6,100 lb | 2,400 lb | 1,900 lb |
| 10,000 lb | 7,200 lb | 2,800 lb | 2,300 lb |
| 14,000 lb | 9,000 lb | 5,000 lb | 4,500 lb |
Limits
- The estimate uses one payload number. It does not check the front and rear axle ratings, tire load limits, or trailer tongue weight.
- Curb weight varies with options, fuel level, and accessories. The figure in the manual may not match the actual truck on a scale.
- The calculator does not include the weight of a trailer, a hitch, or a weight distribution system.
- Payload rules differ for commercial vehicles, and local weight laws may be stricter than the manufacturer rating.
Common mistakes
- Treating the payload rating as cargo capacity and forgetting that passengers use part of it.
- Using the dry weight or shipping weight instead of the curb weight.
- Ignoring dealer or owner add-ons such as a winch, bumper, or bed drawer system.
- Adding a trailer tongue weight to the cargo without checking the hitch and rear axle rating.
- Assuming a higher GVWR always means more payload, when a heavier trim can cancel the gain.
Try it yourself
Quick checks. Answers sit tucked under each question.
A truck has a 6,500 lb GVWR and a 5,000 lb curb weight. With 400 lb of passengers and 600 lb of cargo, what remains?
500 lb remaining. The rating is 1,500 lb, the load is 1,000 lb, and 66.7 percent is used.
A truck has a 9,000 lb GVWR and a 6,800 lb curb weight. With 500 lb of passengers and 1,200 lb of cargo, what remains?
500 lb remaining. The rating is 2,200 lb, the load is 1,700 lb, and 77.3 percent is used.
A 7,000 lb truck with a 5,200 lb curb weight carries 600 lb of passengers and 1,400 lb of cargo. Is it overloaded?
Yes, by 200 lb. The rating is 1,800 lb and the load is 2,000 lb, which is 111.1 percent used.
Questions
Is payload the same as towing capacity?
No. Payload is weight carried on the truck. Towing capacity is the weight of a trailer the truck can pull, and it comes with its own ratings and conditions.
Does a full tank of fuel count against payload?
Fuel is normally included in the curb weight, so it does not come out of payload again. Aftermarket tanks and extra fuel cans do count.
Where do I find the GVWR?
It is on the certification label on the driver side door jamb, and it also appears in the owner's manual.
Can I increase payload with a suspension kit?
A suspension kit can change how the truck handles a load, but it does not change the manufacturer's GVWR or the legal payload rating.
Why is my payload lower than the brochure?
Brochure figures often describe a base trim with no options. A loaded trim, four wheel drive, and dealer accessories add weight and reduce the remaining payload.
Does tongue weight count as payload?
Yes. The downward force a trailer puts on the hitch is carried by the truck and counts against payload, even though the trailer itself is not in the bed.