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Practice Management Tips
Grip strength norms
Free PDF 7 pages, print-ready Clinician-reviewed
Grip strength norms are population reference values, split by age and sex, that show where a patient's hand grip force sits against healthy peers. The most cited Jamar dataset comes from Mathiowetz and colleagues in 1985. Between 20 and 39, right-hand grip averages about 54 to 55 kg for men and 32 to 36 kg for women. Values then fall with each age band, to about 30 kg and 19 kg at 75 and over. A score only compares fairly with a norm when it is measured the same way. This guide covers the reference values, the test protocol and how to read a result.
Template details
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Download your free pinch grip test
A pinch strength form with patient details and setup instructions for lateral, three-point and tip-to-tip pinch. Each pinch type has three trials and an average for each hand, plus a notes field.
What’s inside
- Patient details: date, name, physician's name, age and sex
- Lateral (key) pinch: setup instructions, three trials and an average per hand
- Three-point (three-jaw chuck) pinch: setup instructions, three trials and an average per hand
- Tip-to-tip (two-point) pinch: setup instructions, three trials and an average per hand
- Dominant and non-dominant results recorded separately for every pinch type
- A notes field after each pinch test for observations
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Key takeaways
Grip strength norms are age- and sex-specific, so always compare a score against the matching band.
In the Mathiowetz Jamar data, right-hand grip peaks at 30 to 34, at about 55 kg for men and 36 kg for women.
Jamar values are the most cited clinical reference, and readings from other dynamometers are not interchangeable.
Under EWGSOP2, grip strength below 27 kg for men or 16 kg for women counts as low.
Pabau’s digital forms store each score with its device and hand, so progress stays comparable over time.
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Why the norms matter in clinical practice
Grip strength norms give a fixed point of comparison, so a single measurement becomes a clinical finding rather than an isolated number. Hand therapists, physical therapists, occupational therapists, geriatricians and hand surgeons all use them for baseline assessment and tracking change.
- Rehabilitation baseline: A measured score at intake shows how far recovery has to go after injury or surgery.
- Sarcopenia screening: Low grip strength is one indicator that clinicians consider when assessing muscle health in older adults.
- Occupational health: Norms help set expectations for manual work tasks and return-to-work decisions.
- Surgical planning: Pre-operative scores document function before a procedure affecting the hand or wrist.
How to measure grip strength for a valid comparison
A norm is only as reliable as the measurement behind it. Standard protocols from the American Society of Hand Therapists (ASHT) set the seated position, elbow angle and handle setting used for testing. The Jamar norms in this guide were collected in that standard position.
- Seat the patient upright with the shoulder adducted, elbow at 90 degrees, forearm in neutral and wrist between 0 and 30 degrees of extension.
- Set the Jamar handle to the second position, the setting used for the published norms.
- Test the right and left hands in turn, allowing rest between trials.
- Record three trials per hand and use the average, documenting which hand and which device was used.
Dynamometry gives a continuous score in kilograms, where manual muscle testing grades strength on a 0 to 5 scale. That makes small gains during rehabilitation visible between visits.
Grip strength norms by age and sex (Jamar)
Jamar dynamometer values are the reference most clinicians recognize, and the device is widely treated as the clinical standard. Readings from other dynamometers can differ, so compare like with like. The table gives mean grip strength for each hand, in kilograms and pounds, from a study of 638 adults (Mathiowetz et al., 1985).
Each value is a group mean, and the spread around it is wide. Men aged 20 to 24 averaged 54.9 kg with the right hand, but individual scores ran from about 41 to 76 kg. The study reports right and left hands rather than dominant and non-dominant, because only 7% of its subjects were left-handed.
Means stay close to their peak until the mid-40s, then fall with each age band. The chart sets that decline for the right hand against the low-grip cut-points covered further down.
Percentile rankings place a score within the population. A patient at the 25th percentile is stronger than about a quarter of the reference population and weaker than about three quarters. A single percentile does not diagnose a condition.
Reference values for children and adolescents
Pediatric grip strength changes quickly through childhood and differs by sex from adolescence onward. The adult table above starts at age 20, so it does not apply to younger patients. Pediatric norms come from smaller, older studies, so note the sample size and population before applying them to a patient.
Low grip strength cut-points and sarcopenia screening
Clinical cut-points for low grip strength come from named consensus groups, not from a single universal number. The EWGSOP2 consensus (Cruz-Jentoft et al., 2019) uses sex-specific thresholds as one part of a sarcopenia assessment.
- EWGSOP2 treats grip strength under 27 kg for men and under 16 kg for women as low.
- AWGS and FNIH publish their own cut-offs, which do not always match EWGSOP2.
- A low result is a prompt for further clinical review, not a diagnosis on its own.
Set those thresholds against the table and the margin in older patients is narrow. A man in his 70s who scores well below his age-band mean may already sit under 27 kg. When that happens, a structured plan of resistance training for seniors is a common next step after the clinical review.
Pinch strength norms in hand therapy
Pinch strength is measured separately from grip, and lateral, three-point (palmar/three-jaw chuck) and tip-to-tip pinch each have their own reference values. The same 1985 study reports adult means for all three pinch types alongside grip.
Hand therapists often record both, using the free Pinch Grip Test form on this page, so grip and pinch results sit in the same record. Our pinch grip test guide covers positioning, scoring and interpretation for each pinch type.
How to interpret a patient’s score
Interpretation starts by matching the patient to the right age and sex band. Compare the score with the mean for that band, then decide whether follow-up is needed.
- Confirm the device, handle setting and hand tested.
- Locate the matching age and sex band in the reference table.
- Compare the average of three trials against the band’s mean for that hand.
- Flag scores at or below the relevant cut-point for clinical follow-up.
Grip strength tells you how hard the hand can squeeze, not how well the patient manages daily tasks. Pair it with a patient-reported measure such as the QuickDASH outcome measure, so strength and function are tracked together.
Pro Tip
Record the dynamometer model, handle position and dominant hand on every test. Without these details, a score cannot be fairly compared to a norm months later.
Factors that shift a score away from the norm
Several factors shift a result away from the norm even when the patient is well. Note them in the record so outliers are read in context.
- Handedness: Dominant hands are usually stronger, so record which hand was tested.
- Body size and BMI: Larger hands and heavier builds can change readings.
- Physical occupation: Manual workers may sit above typical values.
- Pain or inflammation: Acute pain can reduce effort and trial consistency.
- Testing position: Any change from the standard seated protocol affects comparability.
How Pabau keeps grip and pinch scores comparable across visits
Paper assessment sheets make results hard to compare across visits, because the device, handle setting and hand tested often go unrecorded. Digital forms keep every assessment in the same structure, so the protocol details are captured with each score.
Pabau, the practice software we build, turns a grip and pinch form into a template your team completes on a tablet. As a physical therapy EMR, it saves each result to the patient record next to the treatment notes.
At the next session, the clinician opens the previous score in the same record and compares like with like. Change over months then shows up as a series of dated results instead of loose sheets.
See how Pabau keeps assessment records in one place
Pabau’s clinical documentation and digital forms let your team store measured scores, track change over time and reference them at the next session.
Conclusion
Treat a grip score as meaningful only when the device, handle setting and hand match the source table. A Jamar reading set against the Mathiowetz means is comparable. A reading from another dynamometer is not, however close the numbers look.
The trade-off is reach. The 1985 sample is modest and came from one US metro area, so newer or local norms may fit some patients better. Pick one source, name it in the record and keep it for every follow-up. The norms then support clinical judgment instead of replacing it.
Book a demo to see how Pabau keeps each grip and pinch result in one record, ready for the next comparison.
Continue your research
Want the full pinch protocol? Pinch grip test explains positioning, scoring and interpretation for each pinch type.
Mapping where the hand hurts? Hand pain diagrams let patients mark pain locations before you test grip.
Grading strength without a dynamometer? MRC scale for muscle strength records 0 to 5 grades for each muscle group.
Is weak grip a nerve problem? Hand nerve tests cover median, ulnar and radial nerve exams.
Testing strength beyond the hand? Muscular strength test gives a structured form for whole-body strength checks.
Frequently asked questions
What are grip strength norms?
Grip strength norms are reference values for hand grip force, usually split by age and sex. They show how a patient’s score compares with a healthy population.
Are grip strength norms different in kg and pounds?
The strength is the same, but the unit changes the figure. Always use a table published in the same unit as your device output to avoid rounding errors.
Which dynamometer do the norms come from?
Jamar dynamometer norms are the most cited in clinical literature. Readings from other devices can differ, so note the device used.
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