Swollen feet usually respond well to a few simple measures: elevating your legs, moving more, cutting back on salt, and wearing compression socks. Most swelling in the feet and ankles happens when fluid leaks out of tiny blood vessels faster than your lymphatic system can drain it back. Gravity pulls that fluid downward, which is why your feet bear the brunt after a long day of sitting or standing.
The strategies below work for everyday, mild-to-moderate swelling. Swelling that appears suddenly in one leg, comes with chest pain or shortness of breath, or doesn’t improve with basic care needs medical attention.
Elevate Your Feet Above Your Heart
The single fastest way to reduce swollen feet is to lie down and prop them up so they’re just above heart level. A couple of pillows under your calves while you’re on the couch or in bed is enough. This reverses the gravity equation, letting pooled fluid drain back toward your core through your veins and lymphatic channels. Even 15 to 20 minutes in this position can make a noticeable difference, and repeating it several times a day keeps swelling from building back up.
If you work at a desk, a footrest that raises your feet at least to seat height helps during the hours you can’t lie flat. It won’t match the effect of full elevation, but it reduces the amount of downward pressure on your lower legs.
Use Ankle Pumps and Calf Exercises
Your calf muscles act like a built-in pump for your veins. Every time they contract, they squeeze blood and fluid upward toward your heart. When you sit or stand without moving for hours, that pump goes idle and fluid accumulates.
Ankle pumps are the simplest way to restart it. Sit or lie with your legs extended, then point your toes toward your knees as far as you can, hold briefly, and point them away from you. Alternate back and forth for two to three minutes, and repeat two to three times every hour when you’re sedentary. You can do these at your desk, on an airplane, or in bed. Walking, even a short lap around your home or office every 30 minutes, activates the same pump more aggressively.
Cut Back on Sodium
Sodium tells your kidneys to hold onto water. The more salt you eat, the more fluid your body retains, and that extra fluid tends to settle in your feet and ankles. The American Heart Association recommends staying under 1,500 mg of sodium per day for the general population, though many guidelines use 2,000 mg as a practical upper limit.
Most excess sodium comes from processed and restaurant food, not the salt shaker. Canned soups, deli meats, frozen meals, soy sauce, and bread are common culprits. Reading nutrition labels for a few days often reveals surprising sources. Swapping to fresh or minimally processed foods can drop your daily sodium intake dramatically, and many people notice less puffiness in their feet within a few days.
Drink More Water, Not Less
It sounds counterintuitive, but staying well hydrated actually reduces fluid retention. When your body senses dehydration, it holds onto sodium and water more aggressively as a protective response. Drinking enough water throughout the day signals your kidneys that it’s safe to let go of the excess. There’s no magic number that works for everyone, but aiming for pale yellow urine is a reliable indicator you’re getting enough.
Try Compression Socks
Compression socks apply graduated pressure to your lower legs, tightest at the ankle and looser as they go up. This steady squeeze helps push fluid back into circulation and prevents it from pooling.
They come in different pressure levels measured in mmHg:
- 15 to 20 mmHg (mild): Good for occasional swelling, long flights, or people new to compression who need to build tolerance.
- 20 to 30 mmHg (moderate): The most commonly recommended range for everyday swelling, post-injury edema, and people who stand or sit for long periods at work.
- 30 to 40 mmHg (firm): Typically reserved for more persistent lower-leg swelling, chronic venous problems, or situations where moderate compression isn’t enough.
Put them on first thing in the morning before swelling has a chance to develop. If they’re difficult to pull on, that’s normal for higher compression levels. Devices called stocking donners can help. Avoid compression socks if you have peripheral artery disease or significant circulation problems in your legs unless a provider has cleared you.
Check Your Medications
Several common medication classes cause foot and ankle swelling as a side effect. Blood pressure drugs called calcium channel blockers are among the most frequent offenders, with ankle swelling reported in up to 15% of people taking certain types. Hormone therapies, some diabetes medications, steroids, and anti-inflammatory painkillers can also contribute.
If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber. There are often alternative drugs in the same class that cause less fluid retention. Never stop a prescribed medication on your own because of swelling.
How to Tell If Swelling Is Serious
Not all foot swelling is harmless. The pattern of swelling gives important clues about what’s causing it.
Swelling in only one leg is more concerning than swelling in both. Sudden, painful swelling in a single leg, especially with warmth or redness, raises the possibility of a blood clot (deep vein thrombosis). This needs same-day medical evaluation. Chronic one-sided swelling is more commonly caused by venous insufficiency or lymphatic problems, which are less urgent but still worth investigating.
Swelling in both legs that comes on quickly can signal worsening heart function, kidney problems, or a medication reaction. If bilateral swelling is accompanied by shortness of breath, difficulty breathing while lying flat, or rapid weight gain over a few days, seek medical care promptly.
The Press Test
You can gauge the severity of your swelling with a simple check. Press your thumb firmly into the swollen area near your ankle for about five seconds, then release. If the skin bounces right back and leaves only a shallow 2 mm dent, that’s mild (grade 1). If your thumb leaves a deeper pit that takes 15 seconds or more to refill, or a deep indentation that lingers for minutes, you’re dealing with moderate to severe fluid retention that warrants professional evaluation.
Swelling During Pregnancy
Some foot swelling during pregnancy is completely normal, especially in the third trimester, as blood volume increases and the growing uterus puts pressure on veins returning blood from the legs. Elevation, ankle pumps, and comfortable shoes usually manage it well.
The warning signs that separate routine pregnancy swelling from preeclampsia include sudden swelling in the face and hands (not just feet), a persistent headache that doesn’t respond to rest or hydration, visual changes like blurriness or dark spots, and pain in the upper right side of the abdomen. Preeclampsia involves high blood pressure and can escalate quickly. Any combination of these symptoms during pregnancy calls for immediate medical contact.
Lifestyle Habits That Help Long-Term
Chronic or recurring foot swelling often improves with sustained changes rather than one-time fixes. Maintaining a healthy weight reduces the load on your venous system and lowers the pressure inside your abdomen that can obstruct drainage from the legs. Regular walking, swimming, or cycling keeps the calf muscle pump active and strengthens venous return over time. Avoiding prolonged sitting or standing, and breaking up long stretches with even brief movement, prevents fluid from settling. Sleeping with a pillow under your calves can reduce the puffiness that greets you in the morning, though most people accumulate swelling during the day rather than overnight.
Loose, comfortable footwear helps too. Tight shoes can restrict circulation and make swelling worse, while shoes with some arch support encourage a more natural gait that activates the calf pump with each step.