Swollen feet usually improve with a few straightforward strategies: elevating your legs, reducing salt intake, staying active, and using compression. Most cases stem from fluid pooling in the tissues after long periods of sitting or standing, excess sodium, or hot weather. The approaches below work for that kind of everyday swelling. If your swelling is sudden, painful, or affects only one leg, skip to the red flags section first.
Why Feet Swell in the First Place
Your body constantly moves fluid between your blood vessels and the surrounding tissues. Pressure inside tiny blood vessels pushes fluid out, and opposing forces pull it back in or route it through your lymphatic system. When that balance tips, fluid accumulates in the spaces between cells, and gravity pulls it downward into your feet and ankles.
Sitting at a desk all day, standing for hours, eating a salty meal, flying on a plane, or being pregnant can all shift that balance. So can certain medications. A class of blood pressure drugs called calcium channel blockers causes ankle swelling in 1 to 15 percent of users at standard doses, and that figure can exceed 80 percent at higher doses over the long term. If your swelling started around the same time as a new prescription, that connection is worth exploring with your prescriber.
Elevate Your Feet Above Your Heart
Elevation is the fastest way to start moving fluid out of your feet. The key detail most people miss: your feet need to be above the level of your heart, not just propped on a footstool. Lying on a couch with your legs resting on a couple of pillows stacked on the armrest works well. So does lying in bed with pillows under your calves and ankles.
There’s no strict time requirement, but 15 to 20 minutes several times a day is a reasonable starting point. The general guideline from clinical sources is that elevation should be frequent enough to help but shouldn’t interfere with your normal daily activities. If you work at a desk, even short breaks lying down with your feet up can make a noticeable difference by the end of the day.
Use Ankle Pumps to Push Fluid Upward
Your calf muscles act as a pump for your veins, squeezing blood and fluid back toward your heart with each contraction. Ankle pump exercises activate that pump without requiring you to get up and walk. Sit or lie down with your legs extended, then alternately point your toes toward your knees and away from you, moving through as full a range as you can. Continue for two to three minutes, and repeat two to three times per hour when you’re sitting for extended periods.
Walking is even more effective if you’re able. Any movement that engages your calves, whether it’s a short walk, cycling, or even standing calf raises at your kitchen counter, helps push pooled fluid out of your lower legs. The goal is to avoid long, unbroken stretches of sitting or standing still.
Cut Back on Sodium
Sodium causes your body to hold onto water. The more salt you eat, the more fluid your tissues retain, and that fluid tends to settle in your feet. The American Heart Association recommends keeping sodium below 1,500 mg per day for the general population. For context, a single fast-food meal can easily contain 1,500 to 2,000 mg on its own.
The biggest sources of sodium aren’t the salt shaker on your table. They’re processed and packaged foods: deli meats, canned soups, frozen meals, sauces, bread, and restaurant dishes. Reading nutrition labels and cooking more meals at home are the most practical ways to get your intake down. Many people see a noticeable reduction in foot swelling within a few days of cutting sodium, because the body releases the excess water it was holding.
Drinking more water, not less, supports this process. When you’re well hydrated, your kidneys are better equipped to flush out excess sodium. Restricting fluids can paradoxically make your body hold onto more water.
Try Compression Socks
Compression socks apply graduated pressure to your lower legs, with the tightest squeeze at the ankle and gradually less pressure moving upward. This helps prevent fluid from settling into your feet and assists your veins in pushing blood back to your heart.
Compression levels are measured in millimeters of mercury (mmHg), and the right level depends on how much swelling you’re dealing with:
- 15 to 20 mmHg: Mild support, suitable for early or occasional swelling from long days on your feet, travel, or mild fluid retention. These are available over the counter and are a good starting point.
- 20 to 30 mmHg: Moderate compression for more persistent swelling. Often recommended after the mild level isn’t enough.
- 30 to 40 mmHg and above: Firm compression typically used for significant or chronic swelling, including lymphedema. These levels generally require a clinical assessment to make sure they’re appropriate for your circulation.
Put compression socks on first thing in the morning, before swelling has a chance to build up. If your feet are already swollen, elevate them for 15 to 20 minutes first, then put the socks on. Wearing them over already-swollen feet reduces their effectiveness and can be uncomfortable.
Epsom Salt Soaks: Limited Evidence
Soaking your feet in warm water with Epsom salt is a popular home remedy, and many people find it soothing. There is some limited evidence that Epsom salt baths may reduce inflammation, but not enough to consider it an evidence-based treatment for swelling. The warm water itself can feel good and may temporarily improve circulation, but heat can also increase blood flow to the area and potentially make swelling worse in some cases. If you try it, use warm (not hot) water and keep the soak to 15 to 20 minutes. Cool water soaks are a safer bet when swelling is the primary concern.
When Swelling Signals Something Serious
Most foot swelling is harmless, but certain patterns warrant urgent attention. Swelling in only one leg, especially if it comes with pain, cramping, warmth, or a change in skin color (reddish or purplish), can indicate a deep vein thrombosis, a blood clot in a deep vein. DVT can occur without obvious symptoms, but when signs are present, they typically affect just one leg and may start as calf soreness.
A blood clot becomes a medical emergency if it travels to the lungs, causing a pulmonary embolism. Warning signs include sudden shortness of breath, chest pain that worsens with deep breathing or coughing, dizziness or fainting, a rapid pulse, or coughing up blood. Any of these symptoms alongside leg swelling require emergency care.
Swelling in both feet that develops gradually and doesn’t improve with elevation and salt reduction can sometimes reflect heart, kidney, or liver problems. Swelling that leaves a lasting dent when you press on it with your finger (called pitting edema), swelling that worsens over weeks, or swelling accompanied by shortness of breath or unexplained weight gain are all patterns worth getting evaluated.