Swollen feet usually respond well to a handful of simple strategies you can start at home right now. Elevating your legs, moving your ankles, cutting back on salt, and staying hydrated can all make a noticeable difference within hours. The key is understanding what’s driving the swelling so you can pick the right combination of approaches.
Elevate Your Feet Above Your Heart
The single fastest way to reduce swollen feet is elevation. Lie back on a couch or bed and prop your legs on pillows so your feet sit above the level of your heart. This position lets gravity pull pooled fluid back toward your torso, where your body can process and eliminate it. About 15 minutes in this position is enough for a meaningful reduction, though you can repeat the session several times a day if the swelling returns.
A recliner works in a pinch, but most recliners don’t actually get your feet above heart level. Stacking two or three firm pillows under your calves while lying flat is more effective. If you spend long hours at a desk, even propping your feet on a low stool improves circulation compared to keeping them flat on the floor.
Use Ankle Pumps to Push Fluid Out
Your calf muscles act as a pump for your veins. Every time they contract, they squeeze blood and fluid upward toward your heart. When you sit or stand for long stretches without moving, that pump shuts off and fluid settles into your feet and ankles.
Ankle pumps are the simplest way to restart it. Sit or lie down with your legs extended. Point your toes toward your knees as far as they’ll go, 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 when you’re sitting for long periods. You can do these at your desk, on a plane, or in bed. Calf raises (standing on your toes and lowering back down) work the same pump while you’re on your feet. Even a short walk around the room helps.
Cut Your Sodium Intake
Sodium pulls water into your tissues. The more salt in your system, the more fluid your body holds onto, and that extra fluid tends to collect in your feet and ankles. The World Health Organization recommends staying under 2,000 mg of sodium per day, which is just under a teaspoon of table salt. Most people consume well over that amount without realizing it.
The biggest sources aren’t the salt shaker on your table. Processed foods, canned soups, deli meats, restaurant meals, bread, and condiments account for the bulk of sodium in a typical diet. Reading nutrition labels and choosing low-sodium versions of the foods you already eat is the most practical starting point. Even a moderate reduction, from 3,500 mg down to 2,000 mg, can visibly reduce puffiness in your feet within a few days.
Drink More Water, Not Less
It sounds backward, but drinking more water actually helps your body release retained fluid. When you’re dehydrated, your body holds onto whatever water it has, concentrating sodium in your tissues and making swelling worse. Staying well hydrated gives your kidneys the resources they need to flush out excess salt and waste. There’s no magic number for how much to drink, but if your urine is pale yellow, you’re in a good range.
Consider Magnesium
Taking 200 to 400 mg of magnesium daily may help reduce swelling, particularly if your levels are low to begin with. Magnesium plays a role in fluid balance, muscle function, and circulation. People who are pregnant, take certain medications, or eat a diet low in leafy greens, nuts, and whole grains are more likely to be deficient. Magnesium is worth trying if basic strategies like elevation and sodium reduction aren’t enough on their own, though anyone with kidney or heart problems should check with a doctor first since the kidneys are responsible for clearing excess magnesium.
Why Heat Makes It Worse
Hot weather is one of the most common triggers for swollen feet. Heat causes your blood vessels to widen, which lets more fluid seep into the surrounding tissue. Gravity then pulls that fluid down into your feet and hands. On top of that, if you’re sweating but not losing much salt (which varies person to person), the higher sodium concentration in your blood draws even more water into your extremities.
On hot days, stay in cool environments when possible, drink extra water, and elevate your feet in the evening. Soaking your feet in cool (not ice-cold) water can constrict blood vessels temporarily and offer quick relief.
Compression Socks and Supportive Footwear
Compression socks apply gentle, graduated pressure that’s tightest at the ankle and loosens as it moves up the calf. This helps push fluid upward and prevents it from pooling. They’re especially useful if you stand or sit for long hours, travel frequently, or are pregnant. Put them on first thing in the morning before swelling starts for the best effect. If you put them on after your feet are already puffy, you’re essentially trapping fluid in place.
Shoes matter too. Tight, restrictive footwear can limit circulation and make swelling worse. Shoes with some room in the toe box and adjustable closures (like laces or straps) accommodate mild swelling throughout the day without cutting off blood flow.
Swelling During Pregnancy
Some degree of foot and ankle swelling is normal during pregnancy, especially in the third trimester. The growing uterus puts pressure on the veins that return blood from the legs, and hormone changes cause the body to retain more fluid overall. Elevation, compression socks, ankle pumps, and staying active all help.
What isn’t normal is sudden, severe swelling, particularly in the face and hands. Combined with headaches, vision changes, or upper abdominal pain, sudden swelling can signal preeclampsia, a serious blood pressure condition that develops during pregnancy. Gradual puffiness in the feet that worsens over the day and improves overnight is typically benign. A rapid change from one day to the next warrants a call to your provider.
When Swelling Signals Something Serious
Most foot swelling is harmless and caused by gravity, heat, salt, or prolonged sitting. But certain patterns point to something that needs medical attention.
Swelling in only one foot or leg is the most important red flag. When just one side swells, especially if it comes on suddenly and is accompanied by pain, warmth, or redness, the concern is a blood clot in a deep vein (DVT). This requires prompt evaluation, typically with an ultrasound of the leg. Swelling in both feet is far less likely to be a clot and more commonly relates to diet, medication side effects, or chronic conditions like heart or kidney issues.
You can check the severity of swelling yourself with a simple test. Press a fingertip firmly into the swollen area for a few seconds and release. If the skin bounces back immediately and barely dents, the swelling is mild. If your finger leaves an indent that takes 15 seconds or longer to fill back in, or leaves a pit deeper than a few millimeters, the swelling is moderate to severe and worth discussing with a doctor. A deep pit (around 8 mm) that takes two to three minutes to rebound suggests significant fluid retention that likely has an underlying medical cause.
Certain medications can also cause bilateral foot swelling as a side effect, including some blood pressure medications, hormone therapies, and anti-inflammatory drugs. If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber.