Compression socks for swelling and foot pain: choosing the right pair

How compression socks work

Compression socks squeeze your legs most firmly at the ankle and a little less further up. This is called graduated compression. The squeeze helps your calf muscles push blood and fluid back up toward your heart, so less of it pools around your ankles as the day goes on.

The strength is measured in millimeters of mercury (mmHg), the same unit used for blood pressure. The higher the number, the firmer the squeeze.

Compression socks don’t cure the cause of swelling or pain. They manage symptoms while you wear them, which is why they work best worn every day, along with moving often and raising your feet. If you don’t know why your feet swell, our guide to what causes swollen feet and ankles explains the common causes and the warning signs to watch for.

What compression socks help, and what they don’t

Swelling, heavy legs and vein problems

This is where compression works best. It reduces everyday swelling from long periods of standing or sitting, and it eases the aching, heaviness and swelling that come with weak leg veins (chronic venous insufficiency) and varicose veins. It won’t make varicose veins you already have go away, but it can make them much less uncomfortable.

For lymphedema, long-lasting swelling caused by a damaged lymph system, compression is a core treatment. It’s usually fitted by a specially trained therapist.

Long flights and car trips

On trips of about 4 hours or more, knee-high socks of 15 to 20 mmHg help keep your ankles from swelling. Studies of long-haul flights found that people who wore compression stockings had less ankle swelling and fewer small, symptom-free clots in the leg. Keep moving too. Our guide on how to reduce swelling fast has travel tips and a routine for after work.

Pregnancy

Swollen feet and ankles are common later in pregnancy, and 15 to 20 mmHg socks or maternity compression tights can help. Mention the swelling to your doctor or midwife, and call right away if it’s sudden or severe, or comes with a headache, vision changes or swelling of your face or hands.

Exercise and recovery

Many runners wear compression socks or calf sleeves. Studies suggest they may slightly reduce muscle soreness after hard exercise, but they make little or no difference to performance.

Do compression socks help with foot pain?

Some kinds. Compression helps pain that comes from swelling or tired legs. It doesn’t help pain from a problem in the bones, tendons or nerves of the foot.

If bunion rubbing is your main problem, a sock made for it, such as OrthoSleeve Bunion Relief Socks, has a split toe and padding over the joint to cut friction. It won’t reduce swelling or correct the bunion. This is an Amazon link, and we may earn a small commission if you buy.

Which compression strength do you need?

If you’re new to compression and your swelling is mild, start with 15 to 20 mmHg. Stronger isn’t better if you can’t get the socks on or can’t stand wearing them. A pair you wear every day does more than a firmer pair left in the drawer.

Anti-embolism stockings, sometimes called TED hose, are a different product. They’re designed for people lying in bed, for example after surgery, and aren’t meant for everyday swelling while you’re up and about.

How to choose the best compression socks for swelling

Once you know the strength, look at the length, toe style, fabric and fit. Getting these right matters more than the brand.

Length

• Knee-high socks suit most people with swollen feet and ankles, and they’re the easiest to put on.
• Thigh-high stockings and compression tights are for swelling that goes above the knee, some vein problems and pregnancy, usually on a doctor’s advice.
• Ankle and foot sleeves squeeze only the foot and ankle. They can feel supportive, but they don’t help swelling in the legs.

Open toe or closed toe

• Closed toe is warmer and looks like a normal sock.
• Open toe is cooler in hot weather and lets you see your toes. That helps if you need to keep an eye on the color of your toes, or you have a toe problem such as an ingrown nail.

Fabric

• Nylon and spandex blends are the most common. They last well and hold their squeeze.
• Cotton, merino wool or bamboo-based blends can feel softer and help with sweaty feet. Thinner knits are easier to wear in the Florida and Texas heat.
• Copper-infused socks are widely sold, but there’s no good evidence that the copper adds anything to the compression.

Features worth looking for

• an mmHg range on the label or box. Socks sold only as “compression” or “support”, with no number, may be much lighter than you need.
• graduated compression, firmest at the ankle
• a soft, wide top band that doesn’t dig in
• wide-calf sizes if your calves are large compared with your ankles
• a seamless toe and a cushioned sole if you have sensitive skin or stand all day

How to measure for compression socks

Shoe size alone isn’t enough. Compression socks are sized by your leg measurements, and a pair that’s too tight or too loose won’t work well.

1. Measure first thing in the morning, before swelling builds.
2. Ankle: measure around the narrowest part, just above the ankle bones.
3. Calf: measure around the widest part.
4. Length, for knee-high socks: sit with your feet flat on the floor and your knees bent at a right angle, and measure from the floor to just below the bend of your knee.
5. Compare your numbers with the brand’s size chart. Charts differ between brands, so check again whenever you switch.

If your measurements fall across two sizes, or your calves are much larger than your ankles, look for wide-calf socks or get measured by a fitter at a medical supply store. Firmer compression, 20 to 30 mmHg and up, is best fitted professionally.

How to put on compression socks

Firm socks take some practice. These steps make it easier:

1. Put them on first thing in the morning. If you put them on later in the day, lie down with your feet up for 10 to 15 minutes first.
2. Make sure your legs are dry. Use moisturizer at night rather than in the morning, because damp or oily skin makes socks hard to pull up.
3. Reach inside the sock, grab the heel and turn the sock inside out down to the heel.
4. Slide your foot in and settle your heel into the heel pocket.
5. Ease the rest of the sock up your leg a little at a time. Don’t yank on the top band.
6. Smooth out any wrinkles. The top should sit about two finger widths below the bend of your knee.
7. Never fold or roll the top over. That makes a tight band that can trap fluid below it.

If it’s a struggle:

• Wear rubber dishwashing gloves for a better grip.
• Try a donning aid, a frame or slippery sleeve that holds the sock open while you slide your foot in.
• Open-toe socks often come with a slippery foot sleeve that helps them glide on.
• If you still can’t manage, ask your doctor about a lighter strength or adjustable wraps that close with hook-and-loop straps.

How long to wear compression socks each day

• Wear them through the day and take them off at bedtime, unless your doctor tells you otherwise. Lying down takes gravity out of the picture, so most people don’t need them at night.
• If you’re new to them, start with a few hours and build up to all day over about a week.
• For travel, put them on before you set off and take them off once you’ve arrived and can move around.
• Check your skin each evening, especially over the ankle bones and shins.

Most people feel less heaviness within a few days. A visible drop in swelling usually takes 2 to 4 weeks of daily wear.

Light sock marks that fade soon after you take the socks off are normal. Take them off right away if you notice:

• numbness, tingling or pain
• toes that turn pale, blue or cold
• deep grooves, blisters or broken skin

Check the fit, and talk to your doctor before you try them again.

How to wash and care for compression socks

• Wash them after every wear. Washing removes skin oils and helps the fabric spring back into shape.
• Hand wash or use a gentle cycle in cool or lukewarm water with a mild detergent. A mesh laundry bag protects them in the machine.
• Skip bleach and fabric softener, which break down the elastic.
• Air dry them flat or hanging, away from direct heat, unless the label says a low-heat dryer is fine. Don’t wring them out.
• Keep at least two pairs, so one can dry while you wear the other.
• Replace them every 4 to 6 months with daily wear, or sooner if they slide down, feel loose, or have runs or holes.

Who should check with a doctor first

Compression socks are safe for most people, but they can cause harm in some situations. Ask your doctor or podiatrist before you use them if you have:

• Poor circulation in your legs (peripheral artery disease). Signs include cold or pale feet, calf pain when walking that eases when you stop, weak pulses in your feet and sores that won’t heal. Compression can reduce blood flow even more. A simple test comparing the blood pressure at your ankle and your arm can check.
• Diabetes, especially with numb feet. Diabetes raises the risk of poor circulation, and numb feet may not feel a sock that’s too tight. Mild compression is often fine once your circulation has been checked. Diabetic socks are a different product: loose, seamless socks that protect the feet rather than squeeze them. Our guide to diabetic foot care explains more.
• Heart failure. Pushing fluid back up the legs can add strain on a weak heart.
• A skin infection, fragile skin, open sores or leg ulcers. Compression may still be part of your treatment, but your care team should set it up.
• Nerve damage (neuropathy) that affects the feeling in your feet.
• A recent blood clot or surgery. Follow the plan your doctor gives you.

Swelling from heart, liver or kidney disease needs its cause treated, not just compression. If you have kidney disease, or your doctor suspects it, Evolve Health offers nephrology and kidney care.

When to see a doctor about swelling or foot pain

Call 911 if swelling comes with chest pain, chest pressure or trouble breathing.

Get seen the same day if:

• one leg suddenly swells, especially with calf pain, warmth or redness (possible blood clot)
• your leg or foot is red, hot and painful, or you have a fever
• your foot or toes turn cold, pale or blue
• you have diabetes and notice a new sore or a change in skin color

Book a visit if:

• swelling doesn’t go down overnight, keeps coming back or leaves a dent when you press it
• swelling started after a new medicine
• you’ve worn compression every day for 2 to 4 weeks and the swelling hasn’t improved
• foot pain lasts more than a week or two
• you’re not sure which strength or size is right for you

A podiatrist can check the circulation and skin of your feet before you start compression, find the cause of foot pain, and tell you whether compression is likely to help. You can find a podiatrist near you and book online. For other over-the-counter products our providers often suggest, see our recommended products.