The mmHg number on a compression stocking tells you how firm it is. mmHg stands for millimeters of mercury, a unit of pressure. A lower range such as 8-15 or 15-20 mmHg is a lighter, everyday level. 20-30 mmHg is firmer, and 30-40 mmHg is firmer still. Higher levels are usually worn on the advice of a doctor or other clinician, so follow their guidance on which level and style to buy. You can browse every option in our stockings collection.
Compression levels at a glance
| Level | How it is often described | What to know |
|---|---|---|
| 8-15 mmHg | Light | Often found in dress and casual socks, such as Jobst for Men over-the-calf socks. |
| 15-20 mmHg | Mild or moderate | A common everyday level. Many anti-embolism stockings are also in this range. See our 15-20 mmHg collection. |
| 20-30 mmHg | Firm | Often labeled "firm" or "surgical weight". Usually chosen on a clinician's advice. See our 20-30 mmHg collection. |
| 30-40 mmHg | Extra firm | Usually worn only when a clinician has recommended this level. |
Styles: knee-high, thigh-high and pantyhose
- Knee-high (below knee). Ends just below the knee. The easiest style to put on and the most common.
- Thigh-high. Ends at the upper thigh, often with a silicone band or "stay-up" top to hold it in place.
- Pantyhose and waist-high. Covers both legs to the waist.
- Open toe or closed toe. Open-toe styles leave the toes out, which some people find cooler or easier with certain shoes. Inspection-toe stockings have an opening under the toes.
How to measure for compression stockings
Brands such as Jobst and Blue Jay size their stockings by leg measurements, not just shoe size. Measure in the morning, before your legs have been on your feet for long, and use a soft tape measure.
- Ankle: the narrowest part, just above the ankle bone.
- Calf: the widest part of the calf.
- Length: for knee-highs, floor to the bend of the knee while seated with your foot flat.
- Thigh: for thigh-highs, the widest part of the upper thigh, plus the floor-to-thigh length.
Compare your numbers with the size chart on the product page. Many lines offer regular and long lengths, and some offer "full calf" sizes for a larger calf measurement.
Tips for putting them on
- Put stockings on in the morning, when it is usually easiest.
- Turn the stocking inside out to the heel, slide your foot in, then roll it up the leg.
- Rubber donning gloves, such as Jobst donning gloves, can help you grip the fabric.
- Smooth out wrinkles, and do not fold or roll the top band down.