What this tool answers
You need a first-pass floor-jack capacity before buying a low-profile hydraulic jack for a passenger car, crossover, or light truck. The calculator estimates minimum rating from GVWR × 0.75, then names the smallest class on this site’s ladder (4,400, 6,613, or 8,800 lb — labeled 2 / 3 / 4 ton) that clears the estimate. It is not a lift procedure, axle-weight study, or substitute for manufacturer instructions.
The 3/4 GVWR screening rule
Consumer floor-jack guidance often screens capacity at about three-quarters of Gross Vehicle Weight Rating — required_lb ≈ GVWR × 0.75. That rule appears in VEVOR capacity education and mirrors common “size up for safety margin” advice from garage-tool media. Always use GVWR from the door sticker when available, not empty curb weight alone.
Why jack stands still matter
A floor jack is a lifting device, not a support. Hydraulic seals can fail; a jack can creep down. Before you put any part of your body under a raised vehicle, place rated jack stands under solid jacking points on firm, level ground and lower the vehicle onto the stands. Keep the jack as a redundant support only if the manufacturer allows it — never as the sole support.
Class ladder on this site
Classes are rated capacities expressed in pounds: 2 ton = 4,400 lb, 3 ton = 6,613 lb, 4 ton = 8,800 lb. The tool picks the smallest class whose rated_lb is greater than or equal to required_lb. Terrain is not used — only GVWR in pounds.
When the answer is NO_MATCH
If required capacity exceeds 8,800 lb (for example GVWR 12,000 → required 9,000), this site returns NO_MATCH for its published class ladder. Typical next steps: a higher-rated shop jack or professional lift equipment. Do not force an undersized consumer floor jack.
Safety notes
Lift only at manufacturer-approved points. Chock wheels. Work on solid, level pavement — not soft asphalt in hot weather if the stands can sink. Keep people clear of the vehicle path. This site does not certify lifts or stand placements.
Sources
VEVOR US floor-jack capacity education using the 3/4 GVWR screening pattern. Garage and automotive media discussing jack capacity vs vehicle weight (including AutoMedian-style capacity explainers). Warn Industries and other manufacturer safety culture around rated equipment and not relying on improvised supports — applied here as a jack-stand disclaimer, not as winch sizing. VEVOR US product pages for rated classes dated in products.json (checked 2026-09-10).