How to Measure Your Vertical Jump (at Home and in the Gym)

Here is the whole thing in one line: your vertical jump is how high you touch at the peak of a jump, minus how high you can reach standing still. That part is simple. The part that almost everyone gets wrong is measuring it accurately, because a sloppy standing reach, a different arm swing, or a new method every time will yield a number that means nothing. A vertical is only useful if you can trust it, and trust comes from measuring the same way, every time.

So this guide covers two things. How to obtain a precise measurement tonight with a wall and a piece of chalk, and how to avoid the mistakes that render most home measurements inaccurate. Then, once you have your number, how do you tell whether it is any good?

Vertical, touch, and reach are not the same thing

Get these three straight before you measure anything, because mixing them up is the most common mistake there is.

• Standing reach is how high you can touch flat-footed, arm fully extended. It never changes much.
• Touch is how high you can touch at the top of a jump.
• Vertical is the gap between the two. It is what your training actually changes.

Here is why the difference matters. Picture two players who can both touch exactly 9 feet at the top of their jump. The first has a 7-foot standing reach, so his vertical is 24 inches. The second has a 7-foot-6 reach, so the same 9-foot touch is only an 18-inch vertical. Same touch, six inches of difference in vertical.

If you want to brag about your hops, touch is the fun number. If you want to know whether your training is working, vertical is the only one that tells the truth, because it strips out your height and arm length and measures pure jumping ability.

Keep that distinction in your head for the rest of this article. Everything below measures your vertical.

The free method: a wall and some chalk

You do not need a Vertec or an app to start. The classic wall-and-chalk test, sometimes called the Sargent test after the coach who popularized it more than a century ago, needs almost nothing and gives a perfectly good baseline.

Grab these: a tall, flat wall with clear space above you (an outdoor brick wall is ideal because chalk shows up and wipes off), a piece of chalk or a small ball of tape, a tape measure, and a friend if you can find one. A partner makes this far easier and far more accurate.

Step 1: Measure your standing reach (the number everyone rushes)

This is the step people blow through, and it wrecks everything downstream, because every error here carries straight into your final number.

Stand side-on to the wall with your dominant shoulder next to it. Feet flat, no tiptoes. Reach up with your dominant hand and push as high as you physically can: arm pinned against your ear, shoulder shrugged up toward it, fingers stretched.

That last shrug is worth a full inch that most people leave on the table. Mark the highest point your fingertips reach. That mark is your baseline, and if you lowball it here, your vertical will read artificially high and you will be lying to yourself.

Step 2: Chalk up and jump

Rub chalk on the fingertips of your jumping hand. Stand next to the wall, dip fast into a quarter-squat, and explode straight up, slapping the wall at the very top with your chalked fingers. Snapping down into that dip quickly matters, because a fast dip loads your muscles like a spring and adds height. Do it three times, rest between reps, and keep the best mark.

Measure from your standing-reach mark up to your best jump mark. That distance is your vertical jump. Write it down with the date and the method, because that note is what lets you compare fairly in eight weeks.

One safety note. If you want to measure a running jump later, do not sprint at a wall. Use a basketball backboard as your target instead. Running full speed into a flat wall is how you break a finger or a nose.

Which jump are you measuring? Because it changes your number a lot

“Vertical jump” is not one test, it is several, and they produce very different numbers for the same person. This is exactly why comparing your chalk mark to someone else’s combine number is often meaningless.

Three variables move the needle:

Arm swing. Swinging your arms up as you jump adds real height. A widely cited 2004 reliability study in the Journal of Strength and Conditioning Research found a full arm swing can add roughly 3 to 6 inches compared to keeping your hands on your hips. So decide up front: are you testing with a swing or without? Both are valid. Just never compare one to the other.

Countermovement vs no countermovement. A countermovement jump (that fast dip before you launch) is the normal, athletic way you jump in a game. A squat jump starts from a held, dead-stop crouch with no dip. The same study found the countermovement version runs about 2 to 4 inches higher, because the quick stretch loads elastic energy your muscles then release. For a basketball number, test the countermovement jump. It is what you actually do on the court.

Standing vs approach. A standing jump uses no steps. An approach jump uses a running start, which converts your speed into extra lift. The gap is big: NBA players typically jump about 5 to 7 inches higher off a running approach than from a standstill.

For hoopers, there is one more wrinkle worth measuring separately. You jump off two feet to grab a rebound and often off one foot on a layup or an approach dunk, and those are different engines. Measure your two-foot standing countermovement jump with a full arm swing as your main “vertical,” the number you track over time. Then, if you care about dunking, separately measure your one-foot approach jump off a backboard, because that is the jump you will actually throw one down with.

The other ways to measure, from cheap to lab-grade

The wall works, but it leans hard on your technique. As you move up the ladder, you trade money and complexity for speed, consistency, and richer data.

A Vertec uses the same jump-and-reach idea as the wall, except you swat a stack of rotating plastic vanes and read the highest one you moved. It kills the guesswork of eyeballing a chalk smudge, which is why it is a fixture at the NFL and NBA combines.

Phone apps are the convenient middle ground, and they deserve an honest warning. Most of them calculate your jump from hang time, the fraction of a second you spend in the air, then run that through physics to estimate height. That math is only as clean as your form. Tuck your knees up or land on your toes and the app thinks you were airborne longer than you were, so it overestimates. Film in slow motion and the numbers break entirely. If you use an app, film at a high frame rate (240 frames per second on a modern phone), land the way you took off, and treat the result as a trend line rather than gospel.

Jump mats (also called contact mats or switch mats) measure ground contact and flight time directly, run a whole team through fast, and often report ground contact time and reactive strength index alongside jump height. Cheaper Velcro or magnetic wall boards run about $45 to $70; full contact mats climb toward $1,000.

Force plates are the laboratory gold standard. They measure the actual force you put into the ground hundreds of times per second and spit out a deep set of metrics. They are also expensive, tied to a facility, and far more than any recreational player needs.

The protocol that makes your number trustworthy

None of the methods above matter if you run them differently every time. Consistency is the whole game. A test you perform one way today and another way next month tells you almost nothing about whether you improved. Lock these down and your number becomes a real measurement instead of a guess:

1. Same method every time. Never compare a chalk number to an app number to a Vertec number. They produce different values by design. Pick one and trend it against itself.
2. Same arm-swing rule. Full swing or hands on hips. Choose one and stick to it forever.
3. Same countermovement. Always the fast-dip jump, or always the dead-stop squat jump. Not a mix.
4. Same shoes, same surface. Basketball shoes on a gym floor jump differently than socks on carpet.
5. Warm up first. A cold vertical reads low. Do a few submaximal jumps before your real attempts.
6. Best of three. Take your best clean rep, not your first or your average, and rest between them.
7. Log the date and method. Future you needs to know exactly how past you measured.

The two errors that quietly ruin home measurements are a lazy standing reach and mismeasuring the gap between the marks. Nail those and the wall method gets you within a respectable margin of far pricier gear.

Is your number any good?

Now the question everyone asks the second they see their result. First, the honest caveat, because the standard benchmark charts are more misleading than they look. Every “average vertical jump” number was collected with some specific protocol, and if it does not match yours, you are comparing two different things. A combine number measured on a Vertec with a full arm swing will look huge next to your no-swing chalk test even if your legs are stronger. Match the protocol, then compare.

With that said, here are the rough ranges. Untrained adult men land around 16 to 20 inches, and women around 12 to 16, with NHANES data putting the average standing vertical for men aged 20 to 49 near 17.7 inches. High school athletes tend to sit around 18 to 22, trained athletes climb into the mid-20s and up, and college players often land in the 24 to 30 range.

NBA players average roughly 28 inches from a standstill and 34 to 36 off an approach, with the most explosive players clearing 40. The famous outlier, Michael Jordan, is usually quoted around a 48-inch leap, though that was never measured under modern testing and sports scientists peg his tested max closer to 40 to 46. Your vertical also peaks in your late teens and early twenties and slowly declines after about 30 as fast-twitch power fades, which is why age matters when you read any chart.

If your number sits below average, do not sweat it. Vertical is one of the most trainable qualities there is, and beginners tend to gain the fastest. Read best vertical jump program for basketball.

Turn your number into a dunk target

Here is the payoff most measurement guides forget. Once you know your standing reach and your vertical, you can work out exactly how far you are from throwing one down.

Flip the formula around: your touch equals your standing reach plus your vertical. A rim sits at 10 feet, which is 120 inches, and you need your hand a few inches above it to actually push the ball through, so aim for a 126-inch touch. Subtract your standing reach from 126, and whatever is left is the vertical you need.

Run the numbers for a 6-foot player with roughly an 8-foot standing reach: 126 minus 96 leaves 30, so about a 30-inch vertical gets a clean dunk. Shorter arms push that higher, longer arms pull it lower. This is also why standing reach matters as much as hops. A very tall player with a huge reach can dunk on a modest vertical, while a shorter player needs serious spring. Measure both, do the subtraction, and you will know your real target instead of guessing.

Frequently asked questions

How do I measure my vertical jump at home without equipment?

Use the wall-and-chalk method. Mark your standing reach flat-footed, chalk your fingers, jump and slap the wall at the top, and subtract the reach from the jump mark. Best of three. That is your vertical.

What is the most accurate way to measure a vertical jump?

A force plate in a lab is the gold standard. For a practical, repeatable option outside a lab, a contact or jump mat is excellent. For most people at home, wall and chalk done consistently is plenty accurate to track progress.

Are phone apps accurate for measuring vertical jump?

They are convenient but imperfect. Most estimate height from your hang time, so they overestimate if you tuck your knees or land on your toes, and slow-motion video throws the math off. Film at a high frame rate, land how you took off, and use the app for trends rather than exact inches.

What is the difference between vertical and touch?

Touch is how high you reach at the peak of a jump. Vertical is that touch minus your standing reach. Two players with the same touch can have very different verticals if their reach differs, so vertical is the honest measure of jumping ability.

Should I use an arm swing when I test?

For a basketball-relevant number, yes, because you swing your arms when you jump in games. The only rule that matters is consistency: pick swing or no swing and use the same choice every single time you test.

Standing or approach vertical, which one matters?

Both, for different reasons. The standing jump is the cleaner, more comparable number and the one most charts use, so track that over time. The approach jump is higher and closer to how you actually dunk, so measure it separately if dunking is the goal.

What counts as a good vertical jump?

Above roughly 20 inches puts you past the untrained average, the mid-20s is solidly athletic, and 28-plus is genuinely explosive. Just make sure the number you are comparing against was measured the same way yours was.

The bottom line

Measuring your vertical takes a wall, some chalk, and five minutes. Measuring it well takes discipline: an honest standing reach, one fixed protocol, and the patience to test the same way every time. Get your baseline today, write it down, and retest every four to six weeks. The single number is almost meaningless on its own. The trend, measured consistently, is the thing that tells you whether all that training is actually paying off.

Research sources

• Topend Sports, Vertical Jump Norms and Test Results by Sport (testing-norms reference, established 1997): https://www.topendsports.com/testing/norms/vertical-jump.htm
• Marathon Handbook, Average Vertical Jump by Age and Sex (with peer-reviewed citations): https://marathonhandbook.com/average-vertical-jump/
• Markovic, G., Dizdar, D., Jukic, I., & Cardinale, M. (2004), Reliability and factorial validity of squat and countermovement jump tests, Journal of Strength and Conditioning Research: https://pubmed.ncbi.nlm.nih.gov/15320660/
• Vertical jump (methods, Sargent test, kinematics), Wikipedia: https://en.wikipedia.org/wiki/Vertical_jump