Swollen feet usually respond well to a few simple strategies you can start at home: elevating your legs above heart level, moving your ankles to pump fluid back up through your veins, and cutting back on salt. Most cases of foot swelling come from fluid leaking out of tiny blood vessels called capillaries and pooling in the surrounding tissue, a process that gravity, inactivity, and dietary habits all make worse. The steps below can bring relief within hours for mild swelling, though persistent or one-sided swelling needs medical attention.
Elevate Your Feet Above Your Heart
The single most effective thing you can do right now is lie down and prop your feet up so they sit higher than your chest. This lets gravity work in your favor, pulling pooled fluid back toward your core where your body can process and eliminate it. Stack pillows under your calves or rest your legs on the arm of a couch. Aim to hold this position for 15 to 20 minutes at a time, several times throughout the day. Many people notice visible improvement after just one or two sessions.
Elevation works best when you make it a routine rather than a one-time fix. If you spend most of the day sitting at a desk or standing in one spot, try to elevate for at least a few minutes every couple of hours. Even resting your feet on a low stool (below heart level) is better than keeping them flat on the floor, though getting them fully above the heart produces the strongest effect.
Use Ankle Pumps and Gentle Movement
Your calf muscles act as a pump that pushes fluid and blood back up your legs. When you sit or stand still for long stretches, that pump barely works, and fluid accumulates. A simple exercise called an ankle pump can restart it: pull your toes up toward your shin, then point them down toward the floor. Repeat this 5 to 10 times per set, and do a set every hour or so when you’re sedentary. You can do these while sitting at your desk, on an airplane, or even lying in bed with your legs elevated for a combined effect.
Walking is another excellent option. Even a short 10-minute walk engages your calf muscles continuously, which helps move fluid out of your feet and ankles. If walking is difficult, flexing and circling your ankles or gently rising onto your toes while holding a counter will activate the same muscle groups.
Reduce Your Salt Intake
Sodium causes your body to hold onto water, and excess salt is one of the most common dietary contributors to swollen feet. Keeping your daily sodium intake around 2,000 mg or less can make a noticeable difference in fluid retention. For perspective, a single fast-food meal can easily exceed that entire daily limit.
The biggest sources of hidden sodium are processed and packaged foods: canned soups, deli meats, frozen meals, soy sauce, and restaurant dishes. Cooking more meals at home and reading nutrition labels gives you the most control. Increasing your water intake alongside sodium reduction may sound counterintuitive, but staying hydrated actually signals your kidneys to release more fluid rather than hold onto it.
Try Compression Socks
Compression socks apply gentle, graduated pressure to your feet and lower legs, preventing fluid from pooling in the first place. They’re most effective when you put them on in the morning before swelling builds up. For mild, occasional swelling, a light compression level of 15 to 20 mmHg is a good starting point. These are widely available at pharmacies and online without a prescription, and they’re commonly used for long flights, desk jobs, and early-stage fluid retention.
If mild compression isn’t enough, a 20 to 30 mmHg sock offers moderate support and is often recommended for more persistent swelling. Higher levels (30 to 40 mmHg and above) are typically reserved for significant swelling or diagnosed conditions like lymphedema and should be fitted with guidance from a healthcare provider, since too much pressure can restrict circulation if used incorrectly.
Check Your Medications
Certain prescription medications are well-known for causing foot and ankle swelling as a side effect. Blood pressure drugs called calcium channel blockers are among the most common culprits. The swelling happens because these medications relax blood vessel walls, which allows more fluid to seep into surrounding tissue. The dihydropyridine subclass of these drugs tends to cause ankle swelling more frequently than other types.
Other medications that can contribute to swelling include some diabetes drugs, steroids, hormone therapies, and certain anti-inflammatory painkillers. If your feet started swelling around the time you began a new medication, that connection is worth raising with whoever prescribed it. Don’t stop taking a medication on your own, but know that alternatives or dosage adjustments often resolve the problem.
How to Check the Severity Yourself
A quick way to gauge how significant your swelling is: press your thumb firmly into the top of your foot or the front of your shin for about five seconds, then release. If a dent stays behind temporarily, that’s called pitting edema, and the depth and how quickly the skin bounces back tell you the severity.
- Grade 1: A shallow 2 mm pit that rebounds immediately. This is mild and usually manageable at home.
- Grade 2: A 3 to 4 mm pit that fills back in within 15 seconds. Still relatively mild but worth monitoring.
- Grade 3: A 5 to 6 mm pit that takes 15 to 60 seconds to rebound. This level suggests more significant fluid buildup.
- Grade 4: A deep 8 mm pit that takes two to three minutes to fill back in. This is severe and warrants prompt medical evaluation.
Swelling During Pregnancy
Some degree of foot and ankle swelling is completely normal during pregnancy, especially in the third trimester. The growing uterus puts pressure on veins that return blood from the legs, and hormonal changes make blood vessels more permeable to fluid. Elevation, ankle pumps, and comfortable shoes all help.
What’s not normal is sudden swelling, particularly in your face and hands, or a rapid jump in weight over just a day or two. These can be signs of preeclampsia, a serious pregnancy complication involving high blood pressure. If you notice puffiness in your face, severe headaches, vision changes, or upper abdominal pain alongside worsening swelling, that combination needs urgent medical attention.
Signs That Swelling Needs Medical Attention
Swelling in both feet that comes and goes with activity, heat, or salty meals is usually benign. Swelling that’s only in one leg is a different story. A blood clot in a deep vein, known as DVT, typically affects one leg and can cause pain or cramping (often starting in the calf), skin that looks red or purple, and a sensation of warmth in that leg. DVT can also occur without obvious symptoms, which is why unexplained one-sided swelling should always be evaluated promptly.
Swelling that doesn’t improve with elevation over several days, that keeps getting worse over time, or that comes with shortness of breath may point to underlying heart, kidney, or liver problems. In these cases, the swelling isn’t the problem itself but a visible signal of something happening internally. Persistent grade 3 or 4 pitting edema, especially if it’s new and you can’t explain it with a long day on your feet or a salty meal, is worth getting checked out.