What compression level is best for your situation?
Choosing the right compression level is one of the most important steps in getting real benefits from compression socks or stockings. Too little compression may not help your symptoms, while too much can feel uncomfortable — or be inappropriate for everyday use.
Important: This article is for general educational purposes only and does not provide medical advice. Always consult a healthcare professional before starting or changing compression therapy, especially if you have a medical condition.
What does "mmHg" mean in compression socks?
Compression levels are measured in millimeters of mercury (mmHg), which indicates how much pressure a garment applies to the leg. Compression garments are designed to deliver graduated compression, meaning pressure is strongest at the ankle and gradually decreases up the leg to support venous return and circulation.
Compression levels explained (and who they're for)
8-15mmHg
Commonly used for:
- Mild leg fatigue
- Long periods of sitting or standing
- Travel and flights
- Everyday wellness and prevention1
This level is often chosen by people seeking gentle support and all-day comfort.
15-20mmHg
Commonly used for:
- Mild swelling (edema)
- Pregnancy-related leg discomfort
- Early varicose veins
- Standing professions
- Post-exercise recovery
This is one of the most widely worn compression levels for daily use.
20-30mmHg
Commonly used for:
- Moderate varicose veins
- Chronic venous insufficiency (CVI)
- Post-surgical recovery
- Moderate swelling
This compression range is frequently recommended by healthcare providers. Consultation with a medical professional is advised before use.
30-40mmHg
Commonly used for:
- Severe venous disease
- Lymphedema
- Severe or chronic swelling
Medical note: This level generally requires a prescription and ongoing medical supervision. It is not intended for general wellness use.
How to choose the right compression level for your situation
Standing all day
Most people choose 15-20mmHg
Pregnancy
Commonly 15-20mmHg, with healthcare provider guidance
Varicose veins
Often 15-20mmHg or 20-30mmHg
Travel / long flights
Often 8-15mmHg or 15-20mmHg depending on swelling risk
Diagnosed conditions
Compression level should be determined by a healthcare professional
Is higher compression always better?
No. Higher compression is not always more effective and may reduce comfort or wear compliance. Clinical guidance emphasizes using the lowest compression level that effectively addresses symptoms, based on individual needs and tolerance.
Fit matters as much as compression level
Even the correct compression level may be ineffective if the fit is incorrect. Proper sizing and measurement are essential to ensure graduated compression works as intended.
For best results:
- Measure your legs according to manufacturer instructions
How to measure for compression socks
- Measure earlier in the day when swelling is minimal
- Follow sizing charts carefully
Sizing charts
Is higher compression always better?
No. Higher compression is not always more effective and may reduce comfort or wear compliance. Clinical guidance emphasizes using the lowest compression level that effectively addresses symptoms, based on individual needs and tolerance.
Fit matters as much as compression level
Even the correct compression level may be ineffective if the fit is incorrect. Proper sizing and measurement are essential to ensure graduated compression works as intended.
For best results:
- Measure your legs according to manufacturer instructions
How to measure for compression socks
- Measure earlier in the day when swelling is minimal
- Follow sizing charts carefully
Sizing charts
When you should talk to a healthcare professional
Consult a healthcare provider before using compression if you:
- Have diabetes or neuropathy
- Have peripheral arterial disease
- Experience sudden or severe swelling
- Have open wounds, ulcers, or skin infections
- Are unsure which compression level is appropriate
References & sources
1. Cleveland Clinic. Compression Therapy: Types and Benefits.
https://my.clevelandclinic.org/health/treatments/23449-compression-therapy
2. Mayo Clinic. Varicose Veins: Diagnosis and Treatment.
https://www.mayoclinic.org/diseases-conditions/varicose-veins/diagnosis-treatment/drc-20350649
3. Mayo Clinic. Edema: Diagnosis and Treatment.
https://www.mayoclinic.org/diseases-conditions/edema/diagnosis-treatment/drc-20366532
4. Mayo Clinic News Network. Tips for Using Compression Stockings.
https://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-tips-for-using-compression-stockings/
5. Cleveland Clinic. Chronic Venous Insufficiency.
https://my.clevelandclinic.org/health/diseases/16872-chronic-venous-insufficiency-cvi
6. Mayo Clinic. Lymphedema: Diagnosis and Treatment.
https://www.mayoclinic.org/diseases-conditions/lymphedema/diagnosis-treatment/drc-20374687
7. Partsch H, et al. Graduated Compression Stockings.
Journal of Vascular Surgery: Venous and Lymphatic Disorders
https://pmc.ncbi.nlm.nih.gov/articles/PMC4081237/
Medical disclaimer: This content is provided for general educational purposes only and does not constitute medical advice, diagnosis, or treatment. Compression therapy may not be appropriate for everyone. Always consult a qualified healthcare professional regarding your specific health needs.