Flexibility Test Calculator

Rate a sit-and-reach result in centimeters from Poor to Excellent using separate bands for men and women.

Gender

Reach Distance (cm)

How to Measure

Sit on the floor with legs extended straight ahead
Place a ruler or yardstick along your legs, with 0 at your toes
Reach forward slowly as far as possible with both hands
Record the distance past your toes (positive) or before (negative)
Repeat 3 times and use the best result

Note: The sit-and-reach test primarily measures hamstring and lower back flexibility. It does not represent overall body flexibility, and these general adult norms are not adjusted for age. Warm up first, move slowly without bouncing, and skip the test if you have back pain or a recent back injury.

Updated October 19, 2026 Formula covered by automated tests

The sit-and-reach test is the classic floor test of how far you can fold forward with straight legs. It mainly reflects the flexibility of the hamstrings and, to a lesser degree, the lower back, and it needs only a ruler or a sit-and-reach box. Enter your best reach in centimeters, measured from the soles of your feet, and the calculator rates it from Poor to Excellent using separate thresholds for men and women.

Coaches, physical education teachers and people returning to exercise use it as a quick baseline that is easy to repeat every few weeks. Because the measurement is simple, the most useful comparison is with your own earlier result, taken the same way, rather than with a stranger’s score.

The formula

Reach (cm) = fingertip position − foot position

Box reading conversion: reach = box reading − box value at the feet

Men: Excellent ≥ +17, Good +6 to < +17, Average 0 to < +6, Below average −8 to < 0, Poor < −8

Women: Excellent ≥ +21, Good +11 to < +21, Average +1 to < +11, Below average −7 to < +1, Poor < −7

reach: Distance in centimeters from the soles of the feet to the fingertips at full stretch; positive if past the feet, negative if short of them
box value at the feet: The scale mark that sits level with the soles on your box or yardstick, subtracted so that every result uses the feet as zero
thresholds: Lower limit of each rating band in centimeters, different for men and women because women score higher on average

Katharine Wells and Evelyn Dillon described the sit-and-reach in 1952 as a practical field test of trunk and hip flexion. It has since been built into school fitness batteries and adult test protocols, each with its own equipment. Some versions put the zero at the fingertips, some at the feet; the YMCA version, for example, places the 15-inch mark of a yardstick at the heels. That is why scores from different sources cannot be compared until they are converted to the same zero point.

The bands used here are general adult reference values that appear in many fitness-testing guides. They are not adjusted for age, and their original study population is not clearly documented, so the rating should be read as a rough indication. Age-specific tables from organizations such as the American College of Sports Medicine use their own protocols and are the better choice for formal assessments.

Worked example

Sam, a 34-year-old man, uses a sit-and-reach box whose scale reads 26 cm level with the soles of his feet. After warming up he records 32.5, 33.5 and 34 cm on three slow reaches.

1 Convert the first trial: 32.5 − 26 = 6.5 cm past the feet.
2 Convert the other two: 33.5 − 26 = 7.5 cm and 34 − 26 = 8 cm.
3 Keep the best: 8 cm.
4 Compare with the male bands: 8 is at least 6 and below 17, so the rating is Good.
5 Gap to the next band: 17 − 8 = 9 cm.

Result: Sam’s sit-and-reach score is +8 cm, rated Good for men. A woman with the same reach would be rated Average, because the female Good band starts at +11 cm.

Before you rely on the result

The test measures one movement. Shoulder, hip rotation and ankle flexibility are not assessed, and long arms or short legs can raise the score without any extra flexibility.
The rating bands are general reference values of uncertain origin and are not age-adjusted, so use them as a rough guide only.
Skip the test if you have a recent back injury, sciatica or have been told to avoid forward bending, and ask a physical therapist for a suitable alternative.

Frequently asked questions

Why can I touch my toes one day and not the next?

Muscle temperature, time of day, recent training and even how tense you feel all change the result by a few centimeters. Test at a similar time, after the same warm-up, and compare averages over several sessions rather than reacting to one score.

Is a poor sit-and-reach score a sign of back problems?

Not on its own. Research has found only a weak link between this test and low back pain. A low score mostly reflects tight hamstrings and limited hip flexion. Pain, numbness or tingling during the test is a reason to stop and see a doctor or physical therapist.

How quickly can I improve my score?

People who stretch the hamstrings and lower back several times a week often see a measurable change within a few weeks. Hold each stretch without bouncing and increase range gradually; forcing the movement raises the risk of strain.

Why does the calculator not ask for my age?

The thresholds it uses are a single set of adult values that do not change with age, so asking for age would suggest an adjustment that does not happen. If you need age-graded norms, use a published protocol with its own equipment and tables.

Sources

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