Methodology guide
Limits, weld-on disclaimer, and when to stop shopping this ladder.
Calculator
Trailer tongue jack capacity calculator
Enter tongue weight in pounds. Get minimum jack rating (tongue × 1.25) and a 5000 / 8000 / 12000 lb class or NO_MATCH. Confirm rating type; weld-on needs competent welding.
Result
Required ≈ tongue_lb × 1.25. Worked check: 3000 × 1.25 = 3750 → 5000 lb class. Confirm dynamic vs static rating on the listing.
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