Free Athletic Performance Tools

Know YourNumbers

Free calculators that show exactly where your vertical jump, sprint speed, squat strength, and broad jump rank — from the general population to elite athletes and pros.

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The Calculators

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Vertical Jump Percentile

Enter your vertical jump and instantly see where you rank against the general population, high school athletes, college players, and pros.

  • Male & female norms
  • 4 age groups
  • Inches or centimeters
  • Compare to NBA, college, HS averages
  • Training tip based on your level
Calculate My Vertical →
Calculator
Sprint Speed Percentile

Enter your 40-yard dash, 100m time, or top speed in mph and find out how you rank against athletes at every level — from recreational to elite.

  • 40-yd, 100m, or mph input
  • Auto-converts all speed formats
  • Compare to NFL combine averages
  • Male & female norms
  • Personalized speed training tip
Calculate My Speed →
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Calculator
Squat Strength Predictor

Enter your squat max and bodyweight to predict your vertical jump and sprint speed — and see exactly what getting stronger will do for your athleticism.

  • Predicts vertical jump & 40-yd dash
  • Strength-to-bodyweight ratio
  • "What if" strength milestone table
  • Back, front, or box squat
  • lbs or kg
Predict My Performance →
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Calculator
Can I Dunk?

Enter your height and vertical jump to find out instantly — and if not, exactly how many inches away you are and what it will take to get there.

  • Instant yes or no answer
  • Accounts for arm length & wingspan
  • One-foot vs two-foot takeoff
  • Progress bar showing how close you are
  • Personalized training timeline
Can I Dunk? →
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Calculator
Broad Jump Speed Predictor

Enter your broad jump distance to predict your 40-yard dash time and see how your horizontal power ranks against athletes at every level.

  • Predicts 40-yard dash & mph
  • Feet/inches or cm input
  • Compare to NFL combine averages
  • Male & female norms
  • Personalized training tip
Predict My Speed →

Training Articles

Science-backed guides
How Much Do You Need to Squat to Dunk?

Squat targets by height and bodyweight, a 16-week training plan, and the most common mistakes keeping people from their first dunk.

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Average NBA Vertical Jump by Position

Average and elite NBA verticals by position, all-time records, how today's stars compare, and exactly how you stack up.

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NFL Combine Scores Explained

Every combine test broken down — what scouts look for, averages by position, all-time records, and how you compare.

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What Is a Good Vertical Jump for My Age?

Average vertical jump norms for every age group, sport, and position — with percentile breakdowns for male and female.

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Average 40 Yard Dash Times by Sport and Position

How does your 40 time compare to athletes at your position? Every major sport covered from high school to NFL combine.

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Does Squat Strength Improve Sprint Speed?

The science behind relative strength and speed — what the research shows and how to train for both at the same time.

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How to Run a Faster 40 Yard Dash

Stance, first step mechanics, sled training, and an 8-week program to drop your 40 time by 0.2 to 0.3 seconds.

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Relative Athletic Score (RAS) Explained

What RAS is, how it's calculated, what scores mean at every position, and why Tom Brady's 1.0 RAS is the most important number in draft history.

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How Fast Is the Average Person in MPH?

Walking, jogging, and top sprint speeds for every age group — plus how you compare to NFL players, Olympic sprinters, and Usain Bolt.

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What Vertical Jump Do You Need to Dunk?

Exact vertical required at every height from 5'5 to 6'8 — with arm length adjustments, approach bonus, and a free dunk calculator.

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Average Vertical Jump for a 14 Year Old

Full percentile breakdown for 14-year-old males and females — by sport, activity level, and how much training can add at this age.

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Vertical Jump for Basketball by Position and Level

Average, good, and elite vertical jump for every basketball position — from high school to NBA. What scouts look for and how you compare.

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AJ Dybantsa Vertical Jump — 2026 NBA Combine Results

Dybantsa posted a 42-inch max vertical at the 2026 combine. Full results for every top prospect — and how these numbers compare to NBA history.

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Victor Wembanyama's Vertical Jump — Why 32 Inches Is Misleading

Wemby's vertical is below average for an NBA wing. Here's why that number barely matters and what measurement actually explains his dominance.

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How Fast Is Shai Gilgeous-Alexander?

SGA's speed in mph, 7-foot wingspan, 36-inch vertical, and why his athletic profile is unlike any other guard in the NBA — and how he matches up with Wemby.

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Dylan Harper Height, Wingspan & Athleticism

Harper stands 6'4.5" with a 6'10.5" wingspan — almost identical to SGA. Here's why his measurements explain his historic 2026 playoff performances.

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LeBron James Vertical Jump & Athletic Profile

A reported 44-inch vertical at 250 pounds. Why LeBron's combination of size, explosiveness, and wingspan has no historical parallel in NBA history.

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Jalen Brunson Height, Wingspan & Athletic Profile

His wingspan ranked 1,679th out of 1,812 NBA prospects ever tested. His height ranked 1,617th. He is in the NBA Finals. Here is what the numbers actually mean.

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2026 NBA Finals Athleticism Breakdown

Full measurements for every key Finals player — Wembanyama, Brunson, KAT, Harper. The most extreme physical contrast in recent Finals history, explained.

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Why Athlete Calc?

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Real Data

Our percentile norms are based on published sports science research, NFL combine data, and NCAA testing records — not guesses.

Instant Results

No signup. No email required. Enter your numbers and get your results in under 10 seconds. Always free.

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Actionable

Every result comes with a personalized training tip and comparison to real athletic benchmarks — not just a number.

Ready to Know Where You Rank?

Pick a calculator and get your results in under a minute. Free, instant, no signup required.

Vertical Jump → Sprint Speed → Squat Strength → Can I Dunk? → Broad Jump →