30-Second Sit-to-Stand Test Calculator (Rikli & Jones)

Q: What is a good score on the 30-second sit-to-stand test for my age?

\"Good\" means falling at or above the average range published by Jones, Rikli & Beam (1999) for your age bracket and sex. For men, the average range is 14-19 reps at 60-64, 12-18 at 65-69, 12-17 at 70-74, 11-17 at 75-79, 10-15 at 80-84, 8-14 at 85-89, and 7-12 at 90-94. For women it is 12-17 at 60-64, 11-16 at 65-69, 10-15 at 70-74 and 75-79, 9-14 at 80-84, 8-13 at 85-89, and 4-11 at 90-94. Scoring above the top of your bracket is \"Above Average\"; scoring more than 2 reps under the bottom of the bracket is flagged as elevated fall risk by 30-Second Sit-to-Stand Test Calculator (Rikli & Jones). See the full cited table in the Background & Theory section below.

Q: How do I perform the 30-second chair stand test correctly at home?

Use a stable, armless chair with a straight back and a seat height of about 43 cm (17 in); push it against a wall so it can't slide. Sit in the middle of the seat, feet flat on the floor about shoulder-width apart, arms crossed at the wrists against your chest. On \"go,\" stand up completely — knees and hips fully extended — then sit back down until your seat touches the chair, and immediately stand again. Each full stand-sit cycle is one repetition; a stand more than halfway up when the 30-second timer ends still counts. Enter your total reps, age, and sex into the calculator above to see how you compare to normative data.

Q: What are the limitations of the 30-second sit-to-stand test?

The test doesn't isolate which muscle group is weak — a low score can reflect quadriceps or hip-extensor weakness, joint pain, poor balance, or cardiovascular limitations. Results are also sensitive to chair height: 30-Second Sit-to-Stand Test Calculator (Rikli & Jones)'s norms assume the standard 43 cm (17 in) seat used in the original Rikli & Jones research, so a taller or lower chair will skew your count. People with severe arthritis, acute pain, or significant cognitive impairment may not be able to perform it safely, and the underlying normative sample was primarily North American, so cross-population comparisons should be made cautiously. Use this score alongside — not instead of — a full clinical assessment.

Score the 30-second chair stand test against age- and sex-adjusted norms to screen lower-body strength and fall risk.

Reviewed by Rahul Singh, Health & Wellness Specialist

Formula

Score = Number of complete sit-to-stand cycles in 30 seconds

The test counts full repetitions of standing from and sitting back onto a standard chair (43cm seat height) within 30 seconds. Scores are compared against age and gender normative data established by Jones, Rikli & Beam (1999). Power is estimated as (mass x gravity x displacement x reps) / time.

Worked Examples

Example 1: Active 70-Year-Old Male

Problem:A 70-year-old male weighing 80 kg completes 14 sit-to-stand repetitions in 30 seconds. Assess his performance.

Solution:Step 1 - Look up the norm band: age 70 rounds to the 70-74 bracket, male.\nJones, Rikli & Beam (1999) average range for men 70-74 = 12-17 reps (below-average cutoff: 11; above-average cutoff: 18).\nStep 2 - Classify the score: 12 < 14 < 18, so 14 reps sits inside the average band -> \"Normal Range\".\nStep 3 - Fall-risk flag: 14 is not below the below-average cutoff (11), so risk = Low.\nStep 4 - Power output = (mass x g x displacement x reps) / time = (80 x 9.81 x 0.35 x 14) / 30 = 128.2 W.\nStep 5 - Rate = 14 reps / 30 s = 0.47 reps/second.

Result:14 reps = Normal Range (norm 12-17) | Fall Risk: Low | Power: 128.2 W

Example 2: Sedentary 80-Year-Old Female

Problem:An 80-year-old female weighing 65 kg completes 5 repetitions in 30 seconds. Assess her performance.

Solution:Step 1 - Look up the norm band: age 80 rounds to the 80-84 bracket, female.\nJones, Rikli & Beam (1999) average range for women 80-84 = 9-14 reps (below-average cutoff: 8; above-average cutoff: 15).\nStep 2 - Classify the score: 5 < 8, so the score falls below the average band -> \"Below Normal Range\".\nStep 3 - Fall-risk flag: 5 is more than 2 reps under the below-average cutoff (8 - 2 = 6, and 5 < 6), so risk = Elevated.\nStep 4 - Power output = (65 x 9.81 x 0.35 x 5) / 30 = 37.2 W.\nStep 5 - Rate = 5 reps / 30 s = 0.17 reps/second.

Result:5 reps = Below Normal Range (norm 9-14) | Fall Risk: Elevated | Recommend supervised strength program

Frequently Asked Questions

What is a good score on the 30-second sit-to-stand test for my age?

\"Good\" means falling at or above the average range published by Jones, Rikli & Beam (1999) for your age bracket and sex. For men, the average range is 14-19 reps at 60-64, 12-18 at 65-69, 12-17 at 70-74, 11-17 at 75-79, 10-15 at 80-84, 8-14 at 85-89, and 7-12 at 90-94. For women it is 12-17 at 60-64, 11-16 at 65-69, 10-15 at 70-74 and 75-79, 9-14 at 80-84, 8-13 at 85-89, and 4-11 at 90-94. Scoring above the top of your bracket is \"Above Average\"; scoring more than 2 reps under the bottom of the bracket is flagged as elevated fall risk by 30-Second Sit-to-Stand Test Calculator (Rikli & Jones). See the full cited table in the Background & Theory section below.

How do I perform the 30-second chair stand test correctly at home?

Use a stable, armless chair with a straight back and a seat height of about 43 cm (17 in); push it against a wall so it can't slide. Sit in the middle of the seat, feet flat on the floor about shoulder-width apart, arms crossed at the wrists against your chest. On \"go,\" stand up completely — knees and hips fully extended — then sit back down until your seat touches the chair, and immediately stand again. Each full stand-sit cycle is one repetition; a stand more than halfway up when the 30-second timer ends still counts. Enter your total reps, age, and sex into the calculator above to see how you compare to normative data.

What are the limitations of the 30-second sit-to-stand test?

The test doesn't isolate which muscle group is weak — a low score can reflect quadriceps or hip-extensor weakness, joint pain, poor balance, or cardiovascular limitations. Results are also sensitive to chair height: 30-Second Sit-to-Stand Test Calculator (Rikli & Jones)'s norms assume the standard 43 cm (17 in) seat used in the original Rikli & Jones research, so a taller or lower chair will skew your count. People with severe arthritis, acute pain, or significant cognitive impairment may not be able to perform it safely, and the underlying normative sample was primarily North American, so cross-population comparisons should be made cautiously. Use this score alongside — not instead of — a full clinical assessment.

References

Reviewed by Rahul Singh, Health & Wellness Specialist · Editorial policy