Dunk Calculator

Find the vertical jump needed to dunk a basketball.

Standing reach

Rim height

Clearance to dunk

Required vertical jump 80

Required vertical jump 31.496

Formula: jump = rim + clearance − standing reach

Step-by-step with your numbers:

1. Values used:

2. Standing reach = 240

3. Rim height = 305

4. Clearance to dunk = 15

6. Required vertical jump = 80

7. Required vertical jump = 31.496

Did we solve your problem today?

To dunk, your jump must lift your reach above the rim with room to push the ball through.

The math behind it

required jump = rim height + clearance − standing reach. A standard rim is 305 cm (10 ft).

240 cm reach, 305 cm rim, 15 cm clearance → 80 cm vertical needed.

What's a good clearance?

About 15 cm (6 in) lets you get your hand over the rim to dunk cleanly.