How jack stand sizing works
Half-GVWR estimate, 1.5 margin, and safety limits.
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Jack stand size calculator
Enter vehicle GVWR. Get minimum pair rating ((GVWR ÷ 2) × 1.5), then a 3 / 6 ton class (6,600 / 13,000 lb) — or NO_MATCH. Never work under a jack alone.
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Result
Required pair rating ≈ (GVWR ÷ 2) × 1.5. Classes: 3 ton = 6,600 lb · 6 ton = 13,000 lb. Above 13,000 lb → NO_MATCH. A jack lifts; stands hold.
From measurement to decision
Open the full calculator
Same tool with room for examples.
3t vs 6t classes
When each class fits — and when none do.
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