Elevating your feet, cutting back on salt, wearing compression socks, and staying moving are the most effective ways to reduce swelling in your feet. Most foot swelling happens because excess fluid pools in the tissue beneath your skin, driven by gravity, prolonged sitting or standing, or your body retaining more water than it should. The good news: mild to moderate swelling often responds well to simple changes you can start today.
Why Your Feet Swell
Swelling in the feet and ankles, called peripheral edema, happens when fluid leaks out of your blood vessels and collects in the surrounding tissue. This can result from several overlapping mechanisms: increased pressure inside your blood vessels (from standing all day or heart issues), your body holding onto extra salt and water, weakened vein valves that let blood pool in your lower legs, or sluggish lymphatic drainage that can’t clear fluid fast enough.
Common everyday triggers include sitting or standing for long stretches, eating a high-sodium meal, hot weather, pregnancy, and certain medications like blood pressure drugs, hormones, or anti-inflammatory painkillers. In most of these cases, the swelling is temporary and responds to the strategies below.
Elevate Your Feet Above Your Heart
Elevation is the simplest, fastest way to move fluid out of your feet. Gravity is what pulled it down there, so reversing the angle helps it drain back toward your core. Lie on your back and prop your feet on a couple of pillows, a cushion, or the arm of a couch so they rest above the level of your heart. Research on post-surgical patients found that even modest elevation on a pillow produced satisfying swelling reduction, and studies measuring leg volume have shown measurable changes in as little as 20 minutes.
Try to elevate for 20 to 30 minutes several times a day, especially after long periods on your feet. If you work at a desk, a footstool that gets your legs at least parallel to the floor can help during the day, though lying down with your feet truly above heart level is more effective.
Do Ankle Pumps Throughout the Day
Your calf muscles act as a pump for the veins in your lower legs. Every time they contract, they squeeze blood and fluid upward. When you sit still for hours, that pump shuts off and fluid accumulates. Ankle pumps are a simple exercise you can do anywhere to restart it.
Sit or lie with your legs extended. Point your toes toward your knees as far as you can, then point them away from you as far as you can. Alternate back and forth for two to three minutes, and repeat two to three times per hour. NewYork-Presbyterian recommends this routine for patients recovering from surgery, but it works just as well for everyday swelling from sitting at a desk or on a long flight. Walking, even briefly, activates the same calf pump, so getting up for a short walk every hour is another reliable option.
Cut Your Sodium Intake
Salt makes your body hold onto water. When you eat a sodium-heavy meal, your kidneys retain extra fluid to keep your blood chemistry balanced, and that fluid often ends up pooling in your feet and ankles. The FDA and the Dietary Guidelines for Americans recommend keeping sodium below 2,300 milligrams per day, roughly one teaspoon of table salt. Most Americans consume well over that.
The biggest sources aren’t the salt shaker on your table. Packaged foods, restaurant meals, deli meats, canned soups, sauces, and bread account for the majority of sodium in a typical diet. Reading nutrition labels and choosing lower-sodium versions of the foods you already eat can make a noticeable difference in how much fluid your body retains. If your swelling consistently worsens after meals, sodium is a likely contributor.
Try Compression Socks
Compression stockings apply graduated pressure to your lower legs, squeezing tightest at the ankle and gradually loosening toward the knee. This helps push fluid upward and prevents it from pooling. They come in different pressure levels measured in millimeters of mercury (mmHg), and the right level depends on how much swelling you’re dealing with.
- 15 to 20 mmHg (mild): Good for very early or mild swelling, prevention during air travel, or building tolerance if you’ve never worn compression before. Often not enough for swelling that rebounds throughout the day.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for mild to moderate lower-leg swelling. Balances effectiveness and comfort for daily wear, post-injury swelling, and maintenance after treatment.
- 30 to 40 mmHg (firm): Used for more persistent or severe swelling, especially when moderate compression isn’t holding the swelling down by end of day. Legs need higher pressure than arms because of the greater gravitational load.
You can buy 15 to 20 mmHg stockings over the counter at most pharmacies. Higher levels are also available without a prescription, but it’s worth talking to a provider to make sure you’re choosing the right pressure, especially if you have circulation problems or diabetes. Put them on first thing in the morning before swelling builds up during the day.
Stay Hydrated and Keep Moving
It sounds counterintuitive, but drinking enough water actually helps reduce fluid retention. When you’re dehydrated, your body responds by holding onto more sodium and water. Staying consistently hydrated signals your kidneys to release excess fluid rather than hoard it.
Regular physical activity is one of the best long-term strategies for preventing foot swelling. Walking, cycling, swimming, or any exercise that engages your leg muscles improves circulation and strengthens the vein-and-muscle pump system that moves fluid out of your lower legs. Even gentle daily walks can make a meaningful difference if you currently spend most of your day sedentary.
What About Epsom Salt Soaks?
Epsom salt foot baths are a popular home remedy, and they may offer some relief, but the evidence is thin. Some research suggests Epsom salt soaks can reduce inflammation, and there are anecdotal reports of benefits for aches and swelling. However, as experts at Henry Ford Health note, not much scientific research has been done to confirm these effects. The warm water itself may improve comfort and blood flow, but don’t rely on Epsom salt soaks as your primary strategy if your swelling is persistent.
When Swelling Is a Warning Sign
Most foot swelling is harmless and temporary, but certain patterns signal something more serious. Pay attention if your swelling is only in one leg, particularly if that leg is also warm, red, or painful. This combination can indicate a blood clot in the deep veins, which needs prompt medical attention.
Swelling that comes with shortness of breath, a rapid or irregular heartbeat, or swelling in your abdomen may point to heart, kidney, or liver problems. These organs play central roles in managing your body’s fluid balance, and when they struggle, fluid backs up in predictable ways.
If you’re pregnant, sudden or worsening foot swelling, especially alongside severe headache, vision changes, upper abdominal pain, or nausea, can be a sign of preeclampsia and warrants immediate care.
Medical Treatment for Persistent Swelling
When home strategies aren’t enough, a provider may prescribe diuretics, commonly called water pills. These medications work by telling your kidneys to flush extra salt and water into your urine, which reduces the overall fluid volume in your body and brings swelling down. They’re commonly used when swelling is related to heart failure, kidney disease, or high blood pressure.
Diuretics are effective, but they’re treating the symptom rather than the root cause. Your provider will typically investigate why you’re retaining fluid in the first place, checking your heart function, kidney health, and vein circulation. The treatment plan depends on what’s driving the swelling. For venous insufficiency, compression therapy and exercise may be the primary approach. For heart-related fluid retention, managing the underlying condition is key to keeping swelling under control long term.