Free tool
Truck Camper Payload Calculator
One job, done fast: the payload math on your specific rig. Enter your truck’s payload, your camper’s real loaded weight, and your people and gear — and see exactly how much payload you use, your remaining margin, and whether you land safe, tight, or overloaded.
Your truck
Payload auto-fills from our database (typical values). For your exact number, check the yellow Tire and Loading Information sticker on your driver’s door jamb — it beats any database.
Your camper
Use the manufacturer’s dry weight — we’ll add the real-world extras below. (Dealers advertise dry weight. Nobody camps dry.)
People and gear
Food, clothes, chairs, tools, recovery gear, the dog — it adds up fast. When in doubt, overestimate.
How the payload math actually works
Dry weight lies. The brochure number is the camper before water, propane, batteries, people, food, and gear — everything that makes it a camper you can actually use. Real payload math adds all of it:
Loaded weight = dry weight + water (8.3 lbs/gallon) + propane (~40 lbs for two 20-lb tanks) + batteries (~65 lbs each for lead-acid) + people + gear + food
Then: payload used = loaded weight ÷ door-sticker payload × 100. Under 85% is comfortable. 85–100% is the tight zone — doable, but weigh the rig and watch your tire ratings. Over 100% is overloaded, full stop.
A real-world example
A 3/4-ton truck with a 2,800 lb door-sticker payload and a hard-side camper with a 1,900 lb dry weight looks fine on paper — 900 lbs to spare. Now load it for a real trip:
- Water: 20 gallons × 8.3 = 166 lbs
- Propane: two full 20-lb tanks ≈ 40 lbs
- Batteries: two lead-acid ≈ 130 lbs
- Two adults ≈ 360 lbs
- Gear, food, and extras ≈ 300 lbs
Loaded weight: 2,896 lbs — 96 lbs over the truck’s payload, from a camper that looked 900 lbs safe in the brochure. That surprise is exactly what this calculator exists to catch: run your own numbers above before you buy or load up.
Still shopping? Different tool, different question.
This calculator runs the payload math on a specific rig you already have in mind. If you haven’t picked a camper yet and want to know which campers fit your truck — with GVWR analysis, rear-axle warnings, and class-based recommendations — that’s the Compatibility Checker’s job:
Open the Truck Camper Compatibility Checker →
Keep learning: Truck Camping: How to Start · Winterize Your Camper · Lightweight Campers
Payload questions, answered
What is truck payload capacity?
Payload is the maximum weight your truck can carry in the cab and bed — passengers, cargo, and a truck camper combined. It’s calculated as GVWR minus the truck’s curb weight, and your exact number is printed on the driver’s door jamb sticker.
Payload calculator vs Compatibility Checker — which one do I need?
Different questions, different tools. Use this payload calculator when you have a specific truck and camper in mind and want the hard numbers — payload used, remaining margin, safe/tight/overloaded. Use the Compatibility Checker when you’re still shopping: it analyzes GVWR, rear-axle limits, and recommends camper types that suit your truck class.
Why does payload matter more than towing for truck campers?
A truck camper sits in the bed, so nearly 100% of its weight counts against payload — unlike a trailer, where only tongue weight does. A truck rated to tow 12,000 lbs might only carry 1,800 lbs of payload.
How much does water really weigh?
Fresh water weighs 8.3 lbs per gallon. A typical 20-gallon tank adds 166 lbs before you load a single sock. That’s why this calculator adds water on top of dry weight.
What happens if I exceed my payload?
Overloading strains suspension, brakes, and tires, worsens handling and stopping distance, can void your warranty, and may create legal liability in an accident. Aim to stay under 85% of rated payload for a real-world safety margin.
Estimates only. Truck payloads in our database are typical values — configurations vary. Always confirm your exact payload on the door jamb sticker and follow your vehicle and camper manufacturers’ ratings.