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Find how high you need to jump to dunk with a free dunk calculator. Enter height, standing reach, current vertical, and rim height — get required jump, rim-touch vertical, gap to close, and training difficulty based on real math, not guesswork.
Last updated: May 24, 2026
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Flat feet, one arm up — if blank we estimate height × 1.3
Regulation: 120 in
Required vertical (with clearance)
32.4 inches
Touch rim only: ~26.4 inches
Gap vs your vertical
+8.4 inches
Assessment
Long-term goal
8.4 inches is a large standing gap — prioritize consistent training and measured reach before expecting regulation dunks.
120.0 in rim − 93.6 in estimated reach (height × 1.3) + 6 in clearance = 32.4 in required vertical; gap 8.4 in vs your 24.0 in.
Running approaches add height beyond standing vertical. Measure reach on a wall for best accuracy.
Dunking on a regulation rim is mostly physics: your standing reach plus vertical jump must exceed the rim, with a few inches so the ball clears the cylinder. This tool uses required vertical = rim − reach + 6 in — the 6 inches account for getting the ball over the metal, not just touching net.
32.4"
6'0" default estimate
+8.4"
At 24" standing vertical
26.4"
No 6" dunk clearance
6'0" · 24" vert
+8.4"
need 32.4"
5'10" · 24"
+11"
need 35"
6'4" · 28"
0" gap
Can dunk (standing model)
5'7" · 40"
0" gap
Can dunk (standing model)
Required vertical = Rim height − Standing reach + 6 inches
120.0 in rim − 93.6 in estimated reach (height × 1.3) + 6 in clearance = 32.4 in required vertical; gap 8.4 in vs your 24.0 in.
| Height | Est. reach | Required vert. | Gap @ 24" |
|---|---|---|---|
| 5'7" (67 in) | 87.1" | 38.9" | +14.9" |
| 5'8" (68 in) | 88.4" | 37.6" | +13.6" |
| 5'10" (70 in) | 91" | 35" | +11" |
| 6'0" (72 in) | 93.6" | 32.4" | +8.4" |
| 6'4" (76 in) | 98.8" | 27.2" | +3.2" |
| Profile | Required | Gap | Difficulty |
|---|---|---|---|
| 6'0" · 24" vertical (default) | 32.4" | +8.4" | Long-term goal |
| 6'0" · 94" reach · 32" vertical | 32" | 0 (met) | Can dunk (standing model) |
| 5'10" · 24" vertical | 35" | +11" | Long-term goal |
| 6'4" · 28" vertical | 27.2" | 0 (met) | Can dunk (standing model) |
| 5'7" · 40" vertical | 38.9" | 0 (met) | Can dunk (standing model) |
This page models standing vertical — feet planted, no steps. Game dunks use approach speed; many players who need +8.4" standing can still throw down with a one- or two-step gather once timing and hip extension improve. Test both: wall stand-and-jump for the calculator, approach jump for on-court reality.
+8.4" to go
32.4" required · Long-term goal
Requirement met
32" required · Can dunk (standing model)
Requirement met
38.9" required · Can dunk (standing model)
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Suggested hashtags: #Basketball #Dunk #VerticalJump #Training #Hoops