Swollen feet usually respond well to a combination of elevation, movement, and dietary changes. Most cases stem from fluid pooling in the lower legs after long periods of sitting or standing, excess sodium intake, or hormonal shifts. The relief strategies below work for everyday, gravity-related swelling. If your swelling is sudden, painful, or only in one leg, skip to the red flags section at the end.
Elevate Your Legs Above Your Heart
The fastest way to move fluid out of swollen feet is to let gravity do the work in reverse. Lie down and prop your legs on pillows or a cushion so they sit above the level of your heart. Keep them there for about 15 minutes, and aim for three to four sessions throughout the day. A recliner or a stack of couch pillows works fine. The key is that your feet need to be genuinely higher than your chest, not just slightly raised on an ottoman.
This works because fluid accumulates in your feet partly due to hydrostatic pressure. When you’re upright all day, blood and lymph fluid have to fight gravity to return to your core. Elevating your legs eliminates that resistance and lets excess fluid drain back toward your circulatory system naturally. You’ll often notice your shoes fit more comfortably after just one session.
Move Your Ankles and Calves Regularly
Your calf muscles act as a pump for your veins, squeezing blood upward with each contraction. When you sit still for hours, that pump shuts off and fluid pools in your feet. Ankle pumps are the simplest fix: point your toes toward your knees as far as you can, then point them away from you. Alternate back and forth for two to three minutes, and repeat two to three times per hour.
Walking is even better if you can manage it. A short 10-minute walk activates the entire chain of muscles in your lower legs. If you work at a desk, set a reminder to stand and walk around every 30 to 60 minutes. Even shifting your weight from foot to foot while standing in a kitchen helps keep fluid circulating.
Cut Back on Sodium
Sodium makes your body hold onto water. The World Health Organization recommends less than 2,000 mg of sodium per day, which works out to just under a teaspoon of table salt. Most people eat well beyond that, largely from processed foods, restaurant meals, canned soups, deli meats, and salty snacks. Bread is another surprisingly heavy contributor.
Reducing sodium doesn’t mean food has to taste bland. Season with herbs, citrus, garlic, and spices instead. Read nutrition labels for a few days to get a sense of where your sodium is really coming from. Many people are shocked to find a single frozen meal contains over 1,000 mg. Cutting your intake closer to the recommended range can produce a noticeable reduction in foot swelling within a few days.
Eat More Potassium-Rich Foods
Sodium and potassium work together to regulate your body’s fluid balance. When potassium is low relative to sodium, your body retains more water. Eating more potassium-rich foods helps counteract excess sodium and encourages your kidneys to release fluid. Good sources include bananas, oranges, melons, potatoes, sweet potatoes, cooked spinach, and broccoli. Seafood and dairy products also contribute.
For most people, getting potassium through food is safer and more effective than supplements. A diet that’s naturally high in fruits and vegetables tends to be lower in sodium and higher in potassium at the same time, hitting both targets.
Try Compression Socks
Compression socks apply graduated pressure to your lower legs, tightest at the ankle and looser toward the knee. This prevents fluid from settling into your feet in the first place. They come in different pressure levels measured in millimeters of mercury (mmHg), and picking the right level matters.
- 15 to 20 mmHg (mild): Good for prevention, light daily swelling, or long flights. This is the level you’ll find at most pharmacies without a prescription. It’s often not enough for swelling that persists throughout the day.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for everyday swelling that doesn’t respond to mild compression. Works well for post-injury or post-surgical swelling and mild to moderate fluid retention in the legs.
- 30 to 40 mmHg (firm): Reserved for more stubborn swelling, chronic venous problems, or cases where lower levels aren’t keeping swelling under control. This level typically requires a healthcare provider’s guidance.
Put compression socks on first thing in the morning, before fluid has had a chance to pool. They’re harder to get on over already-swollen feet and less effective once swelling has set in.
Stay Hydrated
It sounds counterintuitive, but drinking more water can reduce swelling. When you’re dehydrated, your body compensates by retaining the fluid it already has. Staying well hydrated signals your kidneys that it’s safe to release excess water and sodium. There’s no magic number, but aiming for pale yellow urine throughout the day is a reliable indicator you’re drinking enough.
Consider Magnesium
Magnesium plays a role in fluid balance, and some people find that supplementing with 200 to 400 mg per day helps reduce swelling. This can be particularly useful for swelling related to menstrual cycles or for people whose diets are low in magnesium. Foods like nuts, seeds, dark leafy greens, and whole grains are natural sources. If you want to try a supplement, magnesium glycinate and magnesium citrate are generally well absorbed.
What About Epsom Salt Soaks?
Soaking swollen feet in warm water with Epsom salt is one of the most popular home remedies, but the science behind it is thin. There’s very little research confirming that magnesium sulfate actually draws fluid through the skin or reduces swelling in a measurable way. The warm water itself may feel soothing and temporarily improve circulation, but don’t count on an Epsom salt bath as a primary treatment. It’s unlikely to hurt, but elevation and compression will do far more.
When Swelling Is a Warning Sign
Most foot swelling is harmless and responds to the strategies above. But certain patterns signal something more serious. Swelling in only one leg, especially when paired with calf pain, warmth, or skin that turns red or purple, can indicate a deep vein thrombosis (a blood clot in a leg vein). This requires immediate medical attention. Blood clots can also occur without obvious symptoms, so unexplained one-sided swelling always warrants a call to your doctor.
You can get a quick sense of severity by pressing a finger into the swollen area for a few seconds and watching what happens. If the skin bounces back immediately and the dent is barely visible, the swelling is mild. If you leave a deep pit that takes 15 seconds or more to refill, or if the indentation is 5 mm or deeper, the swelling is more significant and worth discussing with a provider. Swelling that comes on suddenly, affects your breathing, or develops alongside chest pain needs emergency evaluation.