What compression rating in mmHg is recommended for healthcare compression socks?

For healthcare workers working standard 8 to 12-hour standing shifts, a graduated compression rating of 15 to 20 mmHg provides the optimal non-prescription balance of venous circulation support and all-day comfort.

Healthcare staff routinely spend up to 80% of a 12-hour shift standing or walking on hard hospital floors, which leads to blood pooling in the lower extremities, peripheral edema, and venous fatigue. Over-the-counter graduated compression garments counteract gravity-induced venous hypertension by applying calibrated pressure to keep blood returning efficiently toward the heart.

If you only do one thing: Select a 15–20 mmHg graduated compression sock for everyday shifts unless a physician prescribes a 20–30 mmHg clinical-grade garment for diagnosed venous insufficiency.

• 8–15 mmHg (Mild compression): Delivers light surface support suited for seated desk work or light activity, but it lacks sufficient mechanical tension to manage the vascular strain of 12-hour continuous standing.
• 15–20 mmHg (Over-the-counter standard): Provides moderate graduated tension—measured in millimeters of mercury (mmHg)—that prevents lower-leg fluid accumulation and reduces muscular fatigue without requiring a prescription.
• 20–30 mmHg (Class I firm medical grade): Offers firm therapeutic pressure designed to treat moderate varicose veins, manage post-surgical recovery, and prevent deep vein thrombosis (DVT), requiring precise limb measurement.
• 30–40 mmHg (Class II extra firm): Treats severe chronic venous insufficiency, active stasis ulcers, and lymphedema; this level must only be worn under direct physician oversight.
• Graduated compression profile: Applies 100% of the designated mmHg rating at the ankle, tapering to approximately 70% at the calf, which mechanically drives deoxygenated blood upward toward the femoral veins.

• Watch out for: Sizing socks exclusively by shoe size instead of measuring ankle and calf circumference, which causes improper pressure distribution or restrictive binding at the top band.
• Watch out for: Rolling or folding the top cuff down when a sock is too long, which doubles the local pressure at the upper calf and can restrict venous outflow.
• Watch out for: Using compression ratings of 20 mmHg or higher without clinical guidance if you have peripheral arterial disease or severe neuropathy; consult a physician for individual health advice.

Measure your ankle at its narrowest point and your calf at its widest point first thing in the morning, then select a 15–20 mmHg pair matching those exact dimensions.