The DunkMeter blog
Jump records, dunk guides and training plans. Every article has a tool you can play with, built on official NBA numbers.
Keon Johnson's 48 inch leap is still the record. See every measured jump of 44 inches or more through the 2026 combine, and the famous numbers nobody ever measured.
Record wall4 min read
There is no height cutoff. With average arms, every inch shorter costs about 1.33 inches of jump. See how rare that jump is at your height, and who proved it can be done.
Height lab3 min read
Stand against a wall, stretch out level and measure from middle fingertip to middle fingertip. Then see how your number compares with NBA prospects.
Wingspan twin finder4 min read
Measure how far your hand is from the dunk line, then work up from a tennis ball to a full size ball. NBA combine numbers show what a run up should add.
First dunk ladder4 min read
Studies show about 5 to 10% more jump height after a solid program. Build a 2 or 3 day week below, then log your tests to watch your progress.
Jump week builder4 min read
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