In 2015, researchers publishing in The Lancet followed 139,691 adults across 17 countries for a median of four years and found something that should reframe how you think about a $30 gadget: for every 5kg decline in grip strength, the risk of dying from any cause rose 16%, cardiovascular disease risk rose 17%, and heart attack risk rose 7% — after adjusting for age, smoking, physical activity, and other standard risk factors. Grip strength turned out to be a stronger predictor of mortality in that cohort than systolic blood pressure.
That single study (Leong et al., PURE) helped turn a simple squeeze test into one of the most-cited biomarkers in aging research. A 2018 meta-analysis in the Journal of the American Medical Directors Association confirmed the pattern held across dozens of cohorts for all-cause mortality, cardiovascular disease, and cancer. This guide covers what the research actually says, what a good grip strength looks like at your age, how to test yourself correctly, and which home dynamometer is worth buying.
TL;DR
- A 2015 Lancet study of ~140,000 people found each 5kg drop in grip strength raised all-cause mortality risk by 16% — a stronger association in that cohort than blood pressure.
- Clinical guidelines (EWGSOP2) use grip strength below 27kg (men) or 16kg (women) as a screening cutoff for further muscle health assessment.
- The Jamar hydraulic dynamometer is the closest thing to a validated clinical standard — it’s the device used in most of the underlying research.
- For casual home tracking, a budget digital dynamometer (Camry EH101, ~$25-35) is a reasonable, far cheaper alternative — just don’t expect clinical-grade precision.
- Testing posture matters: seated, elbow at 90 degrees, is the standard protocol behind these norms. Standing with a straight arm inflates your number.
Quick Verdict
- Closest to the clinical research standard: Jamar Hydraulic Hand Dynamometer (5030J1) — the actual device used in most published grip strength studies, including much of the data behind the norms in this article.
- Best digital alternative to the hydraulic standard: Jamar Plus Digital — same brand pedigree as the hydraulic gold standard, in an electronic display format.
- Best mid-tier digital option: Handexer — higher capacity (120kg vs. the budget cluster’s 90kg), FDA-registered, backlit display; a step up in build quality without reaching Jamar pricing.
- Best budget digital option: the Camry/Handeful/GripX budget cluster — inexpensive, LCD readout, widely used as a lower-cost stand-in for clinical testing.
- Who can skip this entirely: if you already get grip strength measured as part of a broader biomarker panel, DEXA visit, or physical therapy assessment, you don’t need a separate home device just to track the same number.
Grip Strength and Longevity: What the Research Actually Shows
The headline finding — each 5kg decline in grip strength associated with a 16% higher risk of all-cause mortality — comes from the Prospective Urban Rural Epidemiology (PURE) study, a genuinely large, multi-country cohort, not a small pilot study. The size and geographic spread of PURE (17 countries, varying income levels) is part of why the finding got taken seriously: this wasn’t an effect isolated to one population or healthcare system.
Grade A for the underlying grip strength–mortality association — it’s now been replicated across multiple large prospective cohorts and confirmed in a dedicated meta-analysis (JAMDA, 2018) covering all-cause mortality, cardiovascular disease, and cancer outcomes, not just the original PURE finding.
Clinically, this research has already been converted into an actual screening threshold. The European Working Group on Sarcopenia in Older People’s second consensus statement (EWGSOP2, 2019) recommends grip strength below 27kg for men or 16kg for women as a trigger for further muscle health and frailty assessment — a concrete, guideline-backed number rather than a wellness-industry approximation.
Grade C for the idea that grip strength alone tells you your “biological age” or predicts your individual longevity with precision — it’s a real, population-validated risk marker, not a personal diagnosis. Treat a low or declining number as a reason to look closer (strength training, protein intake, a conversation with a clinician), not as a verdict.
Grip Strength Norms by Age and Sex
Peer-reviewed normative data (Wang et al., Journal of Orthopaedic & Sports Physical Therapy, 2018) established reference values for US adults aged 18 to 85. The pattern: grip strength peaks in the late 20s, holds relatively steady through the late 30s, then declines gradually — with the rate of loss accelerating after age 60.
| Age range | Men — average | Women — average |
|---|---|---|
| 25–29 (peak) | ~49.7 kg | ~29.6 kg |
| 40–44 | ~46.7 kg | ~29.9 kg |
| 60+ | Declining ~2–3%/year from peak | Declining ~2–3%/year from peak |
| 75+ | ~60–65% of peak values | ~60–65% of peak values |
Clinical screening cutoff (EWGSOP2): below 27kg for men, below 16kg for women — a level associated with meaningfully elevated risk of frailty and adverse outcomes, regardless of age.
These are population averages, not targets to hit exactly — your own trend over time matters more than how you compare to a stranger’s average. Full percentile breakdowns by decade are available in the Wang et al. 2018 study, cited in Sources.
How to Test Your Grip Strength Correctly
The posture you test in changes your number, so consistency matters more than any single reading:
- Sit upright in a chair with no armrests, feet flat on the floor.
- Elbow bent at 90 degrees, upper arm against your side, wrist in a neutral (not bent) position. This is the standard clinical posture used in most of the research behind these norms — standing with a straight arm tends to inflate your reading.
- Squeeze as hard as you can for 2–3 seconds. Don’t jerk the device; a smooth maximal squeeze is more reliable than a quick snap.
- Rest 15–30 seconds, then repeat — 2–3 trials per hand is standard. Record your single best trial per hand, not the average.
- Test the same time of day and same protocol if you’re tracking a trend — grip strength fluctuates somewhat with fatigue, time since your last workout, and hydration.
Curious what else is worth tracking for healthy aging, beyond a single squeeze test? Answer a few quick, non-identifying questions and get personalized guidance across the biomarker and screening categories ScanGlean covers. Take the Fit Check →
Comparison Table
| Device | Price (approx., 2026) | Type | Accuracy tier | App/tracking | Best for |
|---|---|---|---|---|---|
| Jamar Hydraulic Hand Dynamometer | ~$278 | Hydraulic (fluid gauge) | Closest to research/clinical standard | None (manual reading) | Anyone who wants the actual device used in the underlying studies |
| Jamar Plus Digital Hand Dynamometer | ~$300–350 | Digital (strain gauge) | Same brand pedigree, electronic readout | Basic digital display | Those who want an easier-to-read alternative without leaving the Jamar line |
| Handexer Digital Hand Dynamometer | ~$45–65 | Digital (strain gauge) | Mid-tier; FDA-registered, higher 120kg capacity | Backlit LCD display, no app | Those who’ve outgrown a bargain-bin gauge but don’t need clinical-hydraulic pricing |
| Budget Digital Hand Dynamometer (Camry / Handeful / GripX / GD DYNO-200) | ~$20–35 | Digital (strain gauge) | Budget consumer-grade; shows reasonable agreement with Jamar in independent comparisons | LCD display, no app | Casual home tracking on a budget |
Prices are approximate market rates as of publication and change frequently — confirm current pricing on the linked product page before buying. Links above go to Amazon; ScanGlean may earn a commission on qualifying purchases (see Disclosure below).
Jamar Hydraulic Hand Dynamometer (5030J1)
The Jamar hydraulic dynamometer isn’t a wellness-industry product that adopted clinical language — it’s the actual instrument used in most of the peer-reviewed grip strength research, including a large share of the normative and mortality studies cited in this article. If you want a number that maps as closely as possible to what’s in the published literature, this is the device that produced it.
What it is. A hydraulic, fluid-filled gauge with an adjustable handle (five grip positions) and a peak-hold needle that stays at your maximum squeeze until manually reset.
Tradeoffs. No digital display, no app, no automatic logging — you read a dial and write the number down yourself. It’s also the most expensive option here by a wide margin.
ScanGlean take. Grade A for measurement pedigree — this is the closest a consumer can get to the actual research-grade instrument. Worth the price if you want your home number to be genuinely comparable to published studies, not just internally consistent.
Jamar Plus Digital Hand Dynamometer
The digital sibling to the hydraulic classic, aimed at people who want the Jamar name and general design without reading an analog dial.
What it is. Strain-gauge based digital dynamometer with an LCD display, adjustable handle, and typically a peak-hold function similar to the hydraulic version.
Tradeoffs. Digital Jamar models are not always validated as interchangeably accurate with the hydraulic gold standard across every study — some research finds small systematic differences between hydraulic and digital readings even within reputable brands. It’s also priced close to, or above, the hydraulic version.
ScanGlean take. Grade B — genuinely reputable brand and build quality, but individual accuracy versus the hydraulic standard is a “check before assuming” rather than a guarantee.
Handexer Digital Hand Dynamometer
A step up from the bargain-bin cluster below, aimed at people who want more headroom and a more clinical-feeling build without paying Jamar prices.
What it is. A strain-gauge digital dynamometer with a 120kg (265lb) capacity — noticeably higher than the 90kg budget-cluster devices, which matters if you’re a strong lifter who can max out a lower-capacity gauge — plus a backlit LCD for easier reading.
Tradeoffs. “FDA-registered” (as stated on the listing) means the device and manufacturer are listed with the FDA, not that the FDA has reviewed or certified its measurement accuracy — a distinction worth understanding rather than treating registration as an accuracy guarantee. We didn’t find independent published accuracy comparisons against the Jamar hydraulic standard specific to this brand.
ScanGlean take. Grade B for build quality and headroom over the ultra-budget cluster; Grade C for the “FDA-registered” claim as a proxy for measurement accuracy, which it isn’t.
Budget Digital Hand Dynamometer (Camry / Handeful / GripX / GD DYNO-200)
The budget pick, and the one most likely to show up in casual “best grip strength tester” roundups aimed at home users rather than clinicians. Worth knowing going in: this specific design — 198lb/90kg capacity, auto-capturing LCD readout, adjustable handle — is sold under several different Amazon storefront names (Camry’s EH101 is the best-known, alongside listings branded Handeful, GripX, and GD DYNO-200). They’re built to the same basic spec, so which one you buy matters less than confirming current reviews and stock on the listing you pick.
What it is. A lightweight digital dynamometer with an LCD readout, adjustable grip, and auto-capture of your peak reading, at roughly a tenth of the price of the Jamar hydraulic.
Tradeoffs. Independent clinical comparisons of the Camry-branded version against Jamar have found reasonably close agreement with a small, consistent bias — closer than you’d expect at this price point, but still not a validated clinical instrument. We haven’t seen independent accuracy testing specific to the Handeful, GripX, or GD DYNO-200 listings, though the underlying hardware appears to be the same design.
ScanGlean take. Grade B for accuracy-for-price — a sensible choice if your goal is tracking your own trend over months rather than producing a number for a clinical record.
Bonus: If You Want to Train Grip Strength, Not Just Measure It
Everything above is a measurement instrument — you squeeze it once, read a number, and put it away. If your actual goal is building grip strength over time rather than just tracking it, that’s a different product category: adjustable-resistance grip trainers.
JTHEW Adjustable Grip Strength Trainer (~$20–30) is an example of this category — a spring-loaded hand gripper with adjustable resistance up to 180kg and a built-in digital counter. It’s worth being clear-eyed about what the counter on a device like this is for: it’s a rep/rough-force gauge to make training feel more like a game, not a calibrated instrument comparable to the Jamar-standard research behind the norms in this article. Don’t use its readout to compare yourself against the age/sex tables above — use one of the measurement devices for that, and a resistance trainer like this one for the actual strength-building work in between tests.
ScanGlean take. Grade C for measurement accuracy (it’s not built or validated as a testing instrument), but a reasonable, low-cost option if your goal is progressive grip training rather than tracking a research-comparable number.
Who Should Actually Buy One
- You’re strength training and want an objective number beyond “the weights felt heavier” — grip strength correlates with overall muscular strength and is a fast, five-minute proxy worth tracking alongside your main lifts.
- You’re over 50 and curious about a guideline-backed frailty screening number — the EWGSOP2 cutoffs (27kg men, 16kg women) give you something concrete to compare against, though a single low reading should prompt a conversation with a clinician, not self-diagnosis.
- You already track other longevity biomarkers (VO2 max, biological age tests, CGM data — we’ve covered the evidence behind several of these) and want a cheap, five-minute addition to that routine.
- Who can skip it: if grip strength is already part of a physical you get annually, or a DEXA/InBody visit that includes it, a dedicated home device is redundant unless you want more frequent tracking between visits.
The Bottom Line
The research behind grip strength as a longevity marker is unusually solid for something you can test with a $30 handheld gadget — a large multi-country prospective cohort, a confirming meta-analysis, and an actual clinical guideline built on the cutoffs. That’s a different category of evidence than most of what gets marketed under the “biohacking” umbrella.
What you buy to measure it matters less than the research pedigree language might suggest for casual home use. If you want a number that’s genuinely comparable to the published studies, the Jamar hydraulic is the real research instrument. If you just want an honest, cheap way to watch your own number move over months, any of the budget digital dynamometers will tell you that story well enough — the value here is mostly in testing consistently, not in which specific device sits in your drawer.
Frequently Asked Questions
Is grip strength really linked to longevity?
Yes, and the evidence is unusually strong for a single physical measurement. A 2015 study in The Lancet followed nearly 140,000 adults across 17 countries and found each 5kg decline in grip strength was associated with a 16% higher risk of all-cause mortality, a 17% higher risk of cardiovascular disease, and a 7% higher risk of heart attack — independent of age, smoking, physical activity, and other risk factors. A 2018 meta-analysis in the Journal of the American Medical Directors Association confirmed the association held across all-cause mortality, cardiovascular disease, and cancer outcomes.
What is a good grip strength for my age?
Grip strength peaks in the late 20s to mid-30s for both sexes, then declines gradually. Peer-reviewed normative data (Wang et al., 2018) puts average grip strength for men aged 25-29 around 49.7kg and for women in the same range around 29.6kg, declining slowly through midlife before a steeper drop after 60. Clinically, the European Working Group on Sarcopenia in Older People (EWGSOP2) uses 27kg for men and 16kg for women as cutoffs below which further muscle health assessment is recommended.
What’s the difference between a hydraulic and a digital dynamometer?
Hydraulic dynamometers (like the Jamar 5030J1) use a fluid-filled gauge and are the device used in most published grip strength research, making them the closest thing to a validated clinical standard. Digital dynamometers use a strain-gauge sensor and an electronic display, and are generally lighter, cheaper, and easier to read, but individual models vary in how closely they track hydraulic readings — accuracy studies exist for some specific digital models and not others.
Can a smartwatch or app-connected grip trainer accurately measure grip strength?
Bluetooth-connected consumer grip trainers are useful for tracking your own trend over time and can be genuinely motivating for building a testing habit, but they generally haven’t been validated against the Jamar hydraulic standard the way some clinical digital dynamometers have. Treat the absolute number from a consumer smart trainer as a rough estimate, and use it primarily to track relative change in your own grip strength over months, not as a clinically precise reading.
How should I test my grip strength at home?
Sit upright with your shoulder adducted, elbow bent at 90 degrees, and forearm and wrist in a neutral position — this is the standard clinical posture used in the research behind these norms. Squeeze the dynamometer as hard as you can for 2-3 seconds, rest at least 15-30 seconds, and repeat 2-3 times per hand, recording your best single trial per hand. Testing while standing with a straight arm tends to produce higher readings than the seated clinical protocol, so keep your method consistent if you’re tracking a trend over time.
This article is for general educational and informational purposes only. It is not medical advice, and it is not a substitute for diagnosis, treatment, or guidance from a licensed physician or other qualified healthcare provider. Pricing and product details referenced in this article reflect our research as of publication and are subject to change — see our Methodology page for how we research and update comparisons like this one. This article does not constitute a personal recommendation to buy or avoid any specific product.
Disclosure
ScanGlean is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by linking to Amazon.com. As an Amazon Associate, we may earn a commission from qualifying purchases made through links in this article, at no additional cost to you. Affiliate relationships never influence a product’s evidence grade or its inclusion in a comparison — see our Methodology page for how we research and grade claims independently of how we’re compensated.
Sources
- Leong DP, et al. Prognostic value of grip strength: findings from the Prospective Urban Rural Epidemiology (PURE) study. The Lancet, 2015. Available via The Lancet.
- Association of Grip Strength With Risk of All-Cause Mortality, Cardiovascular Diseases, and Cancer in Community-Dwelling Populations: A Meta-analysis of Prospective Cohort Studies. Journal of the American Medical Directors Association, 2018.
- Wang YC, et al. Hand-Grip Strength: Normative Reference Values and Equations for Individuals 18 to 85 Years of Age Residing in the United States. Journal of Orthopaedic & Sports Physical Therapy, 2018.
- Cruz-Jentoft AJ, et al. Sarcopenia: revised European consensus on definition and diagnosis (EWGSOP2). Age and Ageing, 2019.
- ScanGlean. VO2 Max Testing for Longevity: What the Evidence Shows.