What unit should I measure grip strength in?

Most hand dynamometers report in kilograms (kg). Some consumer devices report in pounds (lbs). The tool accepts both — use the unit toggle to match your device. Do not mix units within the same session.

Which hand should I test?

Standard protocol uses the dominant hand (the hand you write with). Some assessments average both hands or use the stronger hand. This tool assumes dominant-hand norms, which is the most widely published reference. If you measured your non-dominant hand, expect your percentile to read slightly lower than your true dominant-hand percentile.

Where do the norms come from?

The reference values are derived from large population studies including NHANES data and published grip strength norm tables used in clinical and sports science research. Values represent approximate population percentile thresholds for healthy adults and should not replace a clinical assessment.

What is a normal grip strength?

For healthy adults in their 30s, average grip strength is roughly 44–48 kg for men and 27–31 kg for women. Values decline gradually with age. The 50th percentile score shown by this tool reflects that population average for your specific age group and sex.

Can grip strength predict health outcomes?

Population studies associate low grip strength with higher risk of cardiovascular disease, slower recovery from illness, and earlier mortality. It is one of the simplest functional fitness tests used in clinical settings. However, a single reading is not diagnostic — consult a healthcare provider for any health concerns.

How often should I test grip strength?

For general fitness tracking, testing every 8–12 weeks captures meaningful change from training. For clinical or rehab monitoring, follow your provider's recommended schedule. Always test at the same time of day and with the same dynamometer for consistent comparisons.

Grip Strength Norms

Enter your grip strength measurement and age to see how you compare to population norms, with a percentile rank and strength classification.

Your Measurements

Sex

Age Group

Unit

Grip Strength (kg)

Dominant hand, best of 3 attempts

Enter your grip strength to see how you compare

Your Percentile

th percentile

0 25th 50th 75th 100th

Reference Norms —

Classification	Percentile	Threshold (kg)

Values are approximate thresholds based on population studies (NHANES & clinical grip strength databases). Your reading: .

Summary

Grip strength is a well-researched marker of overall muscular strength and long-term health. Population norms come from large-scale studies including the Southampton Hand Assessment Procedure (SHAP) dataset and the National Health and Nutrition Examination Survey (NHANES), stratified by age group and sex. Enter your dominant-hand dynamometer reading in kilograms or pounds to see your percentile rank and classification from below average through superior.

How it works

Select your sex — male and female norms use separate reference tables.
Choose your age group from the dropdown to match the correct reference population.
Enter your grip strength reading in kilograms (kg) or pounds (lbs) using the unit toggle.
The tool interpolates your value within the norm table for your age/sex group.
Results display your percentile rank, classification label, and a visual bar showing where you sit in the distribution.

Use cases

Athletes tracking forearm and hand strength as part of an overall fitness profile.
Older adults monitoring grip strength as a functional health indicator.
Physical therapists documenting baseline and progress after hand or wrist rehab.
Strength coaches assessing grip relative to population norms before programming.
Researchers comparing an individual result to published reference ranges.
Anyone who recently took a hand dynamometer test and wants context for the number.

Frequently Asked Questions

Last updated: 2026-06-19 · Reviewed by Nham Vu