Use our vertical jump calculator (also called a vertical calculator) to turn your height, standing reach, vertical, and rim height into clear results you can act on. It works in centimeters and inches, so it’s friendly everywhere in the world.
Dunk Calculator
Your Dunk Analysis
What the Vertical Jump Calculator Tells You
A dunk calculator is a simple vertical calculator that calculates how close you are to dunking a basketball. You enter your height, standing reach (or leave it blank and it’s estimated), vertical jump, rim height, and your ball/finish choice. The tool then compares how high you can reach with how high you need to reach, and shows a clear “can/can’t dunk” answer plus how much extra vertical you might still need. It works in both CM and Inches, so if you’re searching for a dunk calculator in CM, you’re covered.
The calculator adds your standing reach and your vertical jump to find your max touch. It then adds a small clearance to rim height (for the ball and your hand). If your max touch is higher than rim + clearance, you’ve got the numbers to dunk; if it’s lower, the difference is the extra jump you need to train for.
Key inputs: height, standing reach (optional), vertical jump, rim height, ball size, finish style. Key outputs: yes/no for dunking, current clearance above the rim, extra vertical required (if any).
How to Use Our Dunk Calculator
Pick CM or Inches at the top of the tool. Enter your height, your standing reach (or leave it blank and the calculator will estimate it), your vertical jump, the rim height (305 cm / 10 ft by default), and choose ball size and finish (just clear, flush, or power). Press Calculate and read the result like a quick conversation: “yes/no,” how much room you have above the rim, or how many centimeters/inches of jump you still need.
Interpreting the Dunk Calculator Result
If your reach + vertical is higher than rim + clearance, you’re in dunk territory. If not, the gap tells you exactly what to work on. That’s why this tool is so helpful: it turns a dream into a measurable target and a plan.
Frequently Asked Questions (FAQs)
Q1: How much vertical to dunk at 6 feet?
For a 6-foot (183 cm) athlete, typical standing reach is around 236–241 cm (7’9″–7’11”) depending on wingspan.
Touching the rim with no ball often needs ~27–30 in (69–76 cm). A clean one-hand dunk with a ball usually needs ~30–34 in (76–86 cm). Use the calculator with your own reach and finish style for your exact target.
Q2: Is the result exact?
It’s an estimate. Accuracy improves when you use a measured standing reach and a tested vertical. Technique, hand size, and timing also matter.
Q3: What rim height should I enter?
Regulation is 10 ft = 305 cm. If your hoop is different, change the rim height to match your setup before you calculate.
For Readers Who Prefer CM (Dunk Calculator CM)
If you live in a metric country, set the tool to CM and keep everything in centimeters, height, reach, vertical, rim height, and the final answer. It’s clean, consistent, and easy to track in your training log.