Your Vehicle
Enter a valid GVWR.
Found on door jamb sticker or owner’s manual
Enter a valid curb weight.
Empty vehicle weight with full fuel
Enter a valid GCWR.
Gross Combined Weight Rating (vehicle + trailer)
Passengers + cargo + aftermarket gear in vehicle
Your Trailer
Enter a valid trailer weight.
Loaded trailer weight (not dry weight)
Leave 0 to auto-calculate at 12% of trailer weight
Can I Tow This?
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⚠️ Safety Disclaimer: This calculator provides estimates based on manufacturer ratings. Actual safe towing capacity also depends on hitch class rating, trailer brake requirements, tire load ratings, axle weight ratings (GAWR), road conditions, and driver experience. Always verify with your vehicle owner’s manual. Never exceed any rated limit.
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Sources & Methodology
Towing formulas verified against Kelley Blue Book towing guide, Curt Manufacturing towing definitions, and ACV Auctions towing capacity guide.
Kelley Blue Book — Towing Capacity Guide 2026
GCWR − (curb weight + payload) = towing capacity. Safety buffer recommendation: stay below 80% of rated capacity. Hitch class definitions Class I–V. GVWR vs. towing capacity distinction.
Curt Manufacturing — Towing Capacity & GVWR Guide
GVWR, GCWR, GAWR, payload, tongue weight, and GTW definitions. Tongue weight target: 10–15% of trailer weight for travel trailers. Door jamb sticker location guide.
ACV Auctions — How to Calculate Towing Capacity
Step-by-step towing capacity calculation. 90% rule of thumb safety buffer. Payload &= Driver + Passengers + Cargo + Hitch weight formula.
Formulas: Payload Capacity = GVWR − Curb Weight. Available Payload = Payload Capacity − Current Payload − Tongue Weight. Max Tow (GCWR method) = GCWR − Curb Weight − Current Payload. Safe Tow = Min(Available Payload × (1/tongue_pct), Max Tow) × 0.80. Tongue weight = 12% of trailer weight if not provided. Vehicle passes if trailer weight ≤ Max Tow AND vehicle payload not exceeded.
⏱ Last reviewed: April 2026
How to Calculate Your Towing Capacity
Calculating safe towing capacity requires checking two separate limits simultaneously — most people only check one and get into trouble. Your vehicle has both a GCWR (maximum combined weight of vehicle + trailer) and a GVWR (maximum weight of vehicle alone including tongue weight). Both must be respected at the same time.
The most common mistake is loading up a truck with passengers, gear, and a heavy hitch, then adding a trailer that puts the trailer tongue weight over the remaining payload capacity. Your truck may technically be under the advertised tow rating while simultaneously being dangerously overloaded on payload and rear axle weight.
Towing Capacity Formula
Payload Capacity = GVWR − Curb Weight
Available Payload = Payload Capacity − (Passengers + Cargo + Accessories)
Max Tow (GCWR) = GCWR − Curb Weight − Current Payload
Tongue Weight = 10–15% of Trailer Weight
Example — half-ton pickup towing a travel trailer:
GVWR: 7,500 lbs | Curb Weight: 5,600 lbs | Payload Capacity: 1,900 lbs
Actual payload (driver 200 + passenger 180 + gear 300): 680 lbs
Available payload: 1,900 − 680 = 1,220 lbs remaining
8,000 lb trailer at 12% tongue = 960 lbs tongue weight
960 lbs tongue < 1,220 lbs available payload: ✅ Payload OK
GCWR: 14,500 − 5,600 − 680 = 8,220 lbs max trailer: ✅ GCWR OK
Safe tow at 80%: 8,220 × 0.80 = 6,576 lbs recommended max
GVWR: 7,500 lbs | Curb Weight: 5,600 lbs | Payload Capacity: 1,900 lbs
Actual payload (driver 200 + passenger 180 + gear 300): 680 lbs
Available payload: 1,900 − 680 = 1,220 lbs remaining
8,000 lb trailer at 12% tongue = 960 lbs tongue weight
960 lbs tongue < 1,220 lbs available payload: ✅ Payload OK
GCWR: 14,500 − 5,600 − 680 = 8,220 lbs max trailer: ✅ GCWR OK
Safe tow at 80%: 8,220 × 0.80 = 6,576 lbs recommended max
Common Vehicle Towing Capacities Reference — 2026
| Vehicle Type | Typical Tow Capacity | Typical Payload | Good For |
|---|---|---|---|
| Compact SUV | 1,500–3,500 lbs | 900–1,200 lbs | Small utility trailers, jet skis |
| Midsize SUV | 3,500–6,000 lbs | 1,200–1,600 lbs | Pop-up campers, small boats |
| Full-size SUV | 6,000–9,000 lbs | 1,500–2,200 lbs | Travel trailers, horses |
| Half-ton Truck (1/2) | 8,000–14,000 lbs | 1,500–2,300 lbs | Medium travel trailers, loaded equipment |
| 3/4-ton Truck | 14,000–20,000 lbs | 2,500–3,800 lbs | Heavy fifth wheels, large equipment |
| 1-ton Truck | 20,000–36,000 lbs | 4,000–7,000 lbs | Large fifth wheels, commercial trailers |
Hitch Class Reference
| Class | Max GTW | Max Tongue Weight | Typical Vehicles |
|---|---|---|---|
| Class I | 2,000 lbs | 200 lbs | Small cars, crossovers |
| Class II | 3,500 lbs | 350 lbs | Midsize cars, minivans |
| Class III | 8,000 lbs | 800 lbs | Most SUVs and trucks |
| Class IV | 10,000 lbs | 1,200 lbs | Heavy trucks |
| Class V | 20,000+ lbs | 2,000+ lbs | Heavy duty trucks, commercial |
💡 Safety tip: The 80% rule — always stay below 80% of your rated towing capacity as a safety buffer. Loads shift during travel, uphill grades increase strain significantly, braking distances increase dramatically at maximum load, and weight estimates are often inaccurate. Kelley Blue Book recommends not exceeding 80% of rated tow capacity. If your trailer GVWR is within 20% of your tow rating, upgrade to a heavier tow vehicle for a comfortable safety margin.
Frequently Asked Questions
Towing Capacity = GCWR − (Curb Weight + Current Payload). Find GCWR and curb weight on the door jamb sticker or owner’s manual. Subtract your actual vehicle load (people + cargo + tongue weight) from GCWR to get available trailer weight. Also verify the tongue weight does not exceed your remaining payload capacity. Use 80% of the result as your practical safe limit.
GVWR (Gross Vehicle Weight Rating) is the maximum total weight your vehicle can carry including its own curb weight plus passengers, cargo, AND the tongue weight of the trailer. It does not include the trailer weight itself. You must ensure both your vehicle does not exceed GVWR (payload check) AND the combined vehicle + trailer does not exceed GCWR (combined weight check). Both must be satisfied simultaneously.
GCWR (Gross Combined Weight Rating) is the maximum total weight of your fully loaded tow vehicle plus fully loaded trailer. Set by the manufacturer. Found in the owner’s manual or door jamb sticker. Example: GCWR 18,000 lbs, curb weight 6,000 lbs, 500 lbs passengers = 18,000 − 6,500 = 11,500 lbs maximum trailer weight per GCWR limit.
Tongue weight is the downward force the trailer coupler exerts on the hitch ball. Target 10–15% of loaded trailer weight for travel trailers (15–25% for fifth wheels). Too little tongue weight → trailer sway. Too much → overloads rear axle, reduces front steering control. Tongue weight counts against your vehicle’s payload capacity. Always verify tongue weight does not exceed remaining payload.
Payload Capacity = GVWR − Curb Weight. This is the maximum weight you can ADD to the vehicle including all passengers, cargo, aftermarket accessories, AND trailer tongue weight. Payload is often the true limiting factor — not the advertised tow rating. Many trucks have high tow ratings but limited payload (1,500–2,000 lbs), meaning loading up with passengers and gear can quickly exhaust available payload for tongue weight.
No. Experts recommend staying at 80–90% of rated towing capacity. Reasons: loads shift during travel, uphill grades increase effective weight, braking distances increase dramatically at maximum load, and trailer weight estimates are often inaccurate. KBB recommends not exceeding 80% of rated capacity. The margin protects against miscalculations and unexpected variables.
Both are on the certification label inside the driver-side door jamb. Also in your owner’s manual towing section and on the manufacturer’s website. Note that towing capacity varies significantly by trim level, engine, transmission, and towing package — always check your specific configuration, not a generic spec sheet. Many manufacturers have VIN-based towing lookup tools on their websites.
Hitch classes by max GTW: Class I (2,000 lbs) for small cars. Class II (3,500 lbs) for midsize cars. Class III (8,000 lbs) most common for SUVs and trucks. Class IV (10,000 lbs) for heavy duty trucks. Class V (20,000+ lbs) for commercial. Never exceed the hitch rating even if your vehicle can tow more — the hitch is always the limiting component in the safety chain.
Most states require trailer brakes when the loaded trailer exceeds 3,000 lbs (some at 1,500 lbs). Strongly recommended when the trailer weighs more than 50% of the tow vehicle weight. Electric brake controllers sync trailer brakes with the vehicle’s braking system and dramatically reduce stopping distances with heavy trailers. Check your state DMV for specific requirements.
A weight distribution hitch (WDH) uses spring bars to redistribute tongue weight from the rear axle across all axles, restoring level ride height and improving steering, braking, and handling. Most manufacturers require a WDH when tongue weight exceeds 10–15% of your vehicle’s payload capacity. Often integrated with sway control. Required by many trailer manufacturers for warranties when towing above certain weights.
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