What is a good sit-and-reach score for your age and sex?

Sit-and-Reach Norms by Age Group (cm)

The table below shows the widely published sit-and-reach classification bands for adults, consistent with ACSM's health-related physical fitness assessment guidelines. Scores are the distance reached past the toes in centimeters. "Excellent" means flexibility above the top category threshold; "Poor" is below the bottom threshold. In this protocol the zero point sits level with your feet, so a positive number means you reached past your toes.

To convert your score from inches to centimeters, multiply by 2.54. Eleven inches is about 28 cm. Scores below zero are possible in some protocols (you do not reach your toes) but are almost always scored against the chair or box baseline.

What the Sit-and-Reach Test Actually Measures

The sit-and-reach is a hamstring test dressed up in gym-class clothes. When you reach forward from a seated position with straight legs, the thing that stops you is almost always the back of your thighs. Short hamstrings pull your pelvis into a backward tilt, which rounds your lower back and ends your reach early. What the score reflects, then, is the combined extensibility of your hamstrings and your lumbar spine. It says nothing about your ankles, your shoulders, or your hip flexors.

The test was designed in 1952 by Wells and Dillon for exactly this purpose: back and leg flexibility, nothing more. Seven decades later it is still the most common flexibility test in schools, gyms, and sports medicine clinics, largely because it needs almost no equipment and takes about a minute to run.

Reading Your Score

The rating follows a simple ladder. Excellent and Good mean your reach sits in the top bands for your age and sex, which is common among people who stretch, dance, or train flexibility regularly. Average is exactly what it sounds like, the middle of the pack. Fair and Poor show below-average extensibility, which is ordinary in sedentary adults and no cause for alarm.

• Excellent / Good: above-average hamstring and lumbar extensibility, common in regularly active adults.
• Average: a typical healthy level. Roughly half of adults your age sit in this band.
• Fair / Poor: below-average extensibility. A poor rating is common in desk workers and runners who skip the posterior chain. It responds to work, not worry.

One honest caveat: the number is a snapshot of two tissues, not a verdict on your whole body. Use it to track change, not to compare yourself against the class prodigy.

How to Administer the Test With a Sit-and-Reach Box

Administration is simple enough that you can run it on yourself in a hallway. You need a flat floor, shoes off, and either a sit-and-reach box or a ruler taped down. With the box, sit with both legs fully extended and the soles of your feet flat against the vertical face. The box should be about 30 cm (12 inches) tall, and the zero mark of its scale sits level with your feet, so anything you reach past your toes reads as a positive number.

1. Sit on the floor with legs fully extended and feet flat against the box, shoes off.
2. Place one hand on top of the other, middle fingertips aligned. Exhale as you reach forward along the scale.
3. Hold the end position for two seconds while a partner reads the number. Do not bounce or lunge.
4. Complete three trials with a short rest between them and record the best score.
5. If you are using a floor ruler instead of a box, set the zero at your toe line; reaching short of your toes gives a negative value.

Inches to centimeters: multiply by 2.54. A reach of 11 inches equals 27.9 cm. Do not let anyone push you farther, and never let one hand creep ahead of the other, because both invalidate the result.

The V-Sit and Chair Versions

Not every program uses the box. The V-sit reach, used in some school fitness tests, has you sit with your legs spread about 30 cm (12 inches) apart, heels on a marked line, and reach forward between your ankles. The measurement is taken past the heel line, and for most people the score lands close to the box version. The chair sit-and-reach is the senior-friendly variant. You sit on the front edge of a chair with one leg extended and the other bent, reaching toward your toes while your back stays supported.

The chair version was validated as part of the Senior Fitness Test battery (Jones et al., 1998) and is the one you will see in physical therapy clinics and senior centers, because it removes the balance and lower-back demands of the floor version. Scores from the three versions are not interchangeable. If you are tracking yourself, pick one protocol and stick with it.

Why Scores Slip With Age

Flexibility is not fixed. Muscle tissue loses some elasticity as you age, intervertebral discs dry out, and years of sitting shorten the hamstrings into whatever length your chair demands. The published bands drop by roughly 1-2 cm per decade, so a score that was good at 25 reads as merely average by 55. Women consistently score 2-3 cm higher than men of the same age, mostly because of proportionally longer trunks and more compliant hamstring tissue. None of this is irreversible, which is the point of the training section below.

How the Research Judges the Test

The evidence base is stronger than you might expect for a gym-class staple. Mayorga-Vega, Merino-Marban and Viciana (2014) pooled 46 studies in a meta-analysis and concluded that the sit-and-reach and its variants show moderate to high validity for estimating hamstring extensibility, with weaker support for lumbar extensibility on its own. In plain terms, a low score reliably tells you the hamstrings are tight, but it is a poorer judge of the lower back in isolation.

Hui and Yuen (2000) showed that the modified back-saver version, which tests one leg at a time, matches the validity of the full test while reducing stress on the lower back. The chair version proved itself in the Senior Fitness Test battery (Jones et al., 1998). Together these papers explain why the test endures after seven decades: it is cheap, fast, and its numbers mean something.

Limitations to Keep in Mind

• Limb proportions matter. Longer arms and a shorter torso let you reach farther for the same amount of hamstring flexibility. A long-legged person is punished by the geometry, not by their muscles.
• Two joints, one number. The test mixes hamstring and lumbar extensibility into a single score, so it cannot tell you which one is the limit.
• Not a diagnostic. A low score is not a red flag on its own. It predicts tight hamstrings, not injury or back pain.
• Tracking, not absolutes. Run it the same way every time and changes over months mean something real, even if the absolute number is a rough guide.

Training to Reach Farther

The fastest path to a better score is consistent hamstring work. Hold a standing forward fold for 30-60 seconds per leg, add single-leg hamstring stretches with the heel propped on a bench, and do two or three sets most days. The movement pattern matters too. Practice hinging at the hips with a straight back, because the reach is as much about pelvic tilt as it is about raw muscle length. Most people move up one category within 4-8 weeks of daily stretching.

Pair the flexibility work with strength and endurance and you get a more durable result. The curl-up test and beep test respond to the same core and cardiovascular training, and the whole set of tests belongs to the FitnessGram battery used in schools. For another window into how mobility changes with age, see where your walking speed ranks against clinical norms.