Swollen feet usually respond well to a few simple strategies you can start at home: elevating your legs above heart level, wearing compression socks, moving your ankles regularly, and cutting back on sodium. Most swelling in the feet and ankles comes from fluid pooling in the tissue of your lower extremities, pulled there by gravity and held there by salt, inactivity, or pressure changes in your blood vessels. The fix depends on the cause, but for the everyday variety, relief is straightforward.
Why Feet Swell in the First Place
Your body constantly moves fluid between your bloodstream and the tissue around it. When more fluid gets pushed out of your blood vessels than gets pulled back in, it collects in the spaces between cells. Because your feet sit at the lowest point of your body, gravity makes them the default collection site.
Several things tip this balance. Sitting or standing for long stretches raises the pressure inside the tiny blood vessels in your legs, forcing more fluid out. Eating a lot of sodium causes your kidneys to hold onto water to keep your blood chemistry balanced, which increases overall fluid volume. Inflammation from an injury or infection makes blood vessel walls leakier. And if your lymphatic system (the network that normally drains excess fluid from tissue) is sluggish or blocked, fluid simply has nowhere to go.
Heat, pregnancy, certain medications, and conditions like heart failure or kidney disease can all contribute. Understanding which factor is driving your swelling helps you pick the right approach.
Elevate Your Feet Above Your Heart
Elevation is the simplest and most immediate way to move 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 an ottoman. Lying on your back with your legs resting on a stack of pillows or against a wall works well. Aim to do this several times a day, holding the position for 15 to 20 minutes each session. You should notice your feet look and feel less puffy within that window.
If you work at a desk, even a slight elevation helps slow the accumulation during the day. A footstool under your desk won’t fully reverse swelling, but it reduces how much builds up before you can elevate properly at home.
Use Compression Socks
Compression socks apply graduated pressure to your lower legs, squeezing gently at the ankle and less tightly toward the knee. This helps push fluid back into your bloodstream and prevents it from settling into your tissue.
Over-the-counter options come in different pressure levels, measured in millimeters of mercury (mmHg):
- 15 to 20 mmHg (mild): Good for everyday swelling from sitting, standing, or air travel. Available without a prescription at most pharmacies.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for mild to moderate swelling and venous issues. Sometimes available over the counter, sometimes through a medical supplier.
- 30 to 40 mmHg (firm): Used for more significant swelling or chronic venous problems. Typically requires a fitting and a healthcare provider’s guidance.
For most people dealing with occasional puffy feet, a pair in the 15 to 20 mmHg range is a good starting point. Put them on in the morning before swelling starts, since they’re harder to pull on over already-swollen ankles.
Move Your Ankles Frequently
Your calf muscles act as a pump for the veins in your lower legs. Every time you flex your ankle or take a step, your calves squeeze blood and fluid upward. When you sit still for hours, that pump goes idle and fluid accumulates.
A simple exercise called an ankle pump can make a real difference. While sitting or lying down, 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. This is especially useful on long flights, during bed rest, or at a desk job. Walking, even for just a few minutes each hour, activates the same pumping mechanism more effectively.
Reduce Your Sodium Intake
Sodium is the main driver of how much water your body holds. When you eat more salt, your kidneys retain water to keep sodium concentrations balanced, and your overall fluid volume rises. The Dietary Guidelines for Americans recommend keeping sodium below 2,300 mg per day, which is roughly one teaspoon of table salt. Most people consume well over that amount, largely from processed and restaurant food rather than the salt shaker.
Reading nutrition labels is the fastest way to cut back. Canned soups, deli meats, frozen meals, sauces, and bread are surprisingly high in sodium. Swapping even a few of these for lower-sodium alternatives can reduce fluid retention noticeably within a few days. Your kidneys are very efficient at excreting excess sodium when they’re healthy, so lowering intake gives them a chance to clear the backlog and release the water that came with it.
Stay Hydrated
It sounds counterintuitive to drink more water when your feet are swollen, but dehydration actually makes your body hold onto fluid more aggressively. When your blood volume drops, your kidneys respond by retaining sodium and water. Staying consistently hydrated keeps this system relaxed, allowing your kidneys to excrete sodium more freely and reducing overall fluid retention.
There’s no magic number of glasses per day that works for everyone. Drink enough that your urine stays a pale yellow. If you’ve been eating salty food, drinking extra water helps your kidneys flush out the excess sodium faster.
Try an Epsom Salt Soak
Soaking your feet in warm water with Epsom salt (magnesium sulfate) is a popular home remedy. The warm water itself helps relax muscles and improve circulation, and the dissolved salts may create a mild osmotic effect, drawing some fluid out through the skin. Some small studies have found that Epsom salt soaks reduced swelling and discomfort, particularly in joints. The evidence isn’t strong enough to call it a proven treatment, but many people find it soothing, and it’s unlikely to cause harm. Dissolve about half a cup in a basin of warm water and soak for 15 to 20 minutes.
Check Your Medications
Several common medications cause foot and ankle swelling as a side effect. Calcium channel blockers, a widely used category of blood pressure medication, are one of the most frequent culprits. Nearly half of people taking them experience some degree of swelling. Other medications that can cause puffy feet include:
- Certain blood pressure drugs beyond calcium channel blockers, including beta blockers and others
- Hormone-based medications like corticosteroids, estrogen, progesterone, and testosterone
- Anti-inflammatory painkillers (NSAIDs) like ibuprofen and naproxen
- Nerve pain and seizure medications such as gabapentin and pregabalin
- Some diabetes medications and antidepressants
If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber. Don’t stop taking a medication on your own, but an alternative drug in the same class may cause less fluid retention.
Swelling During Pregnancy
Some foot swelling during pregnancy is completely normal, especially in the third trimester. Your blood volume increases significantly, and the growing uterus puts pressure on the veins returning blood from your legs. The same strategies apply: elevate your feet, wear compression socks, stay active, and reduce salt.
What’s not normal is sudden, severe swelling, particularly if it’s accompanied by a bad headache, changes in vision, upper abdominal pain, nausea, or difficulty breathing. These can be signs of preeclampsia, a serious blood pressure condition that develops during pregnancy. Most pregnant women have some degree of swelling in their feet, so swelling alone isn’t cause for alarm. But when it appears rapidly alongside any of those other symptoms, it needs prompt medical attention.
When Swelling Signals Something Serious
Most foot swelling is harmless and temporary. But certain patterns point to conditions that need treatment:
Swelling in only one leg, especially with pain, warmth, or redness, raises concern for a blood clot (deep vein thrombosis). This is particularly worth taking seriously if it comes on suddenly or follows a period of immobility like a long flight or surgery recovery.
Swelling in both legs along with shortness of breath, difficulty lying flat, or fatigue can suggest heart failure, where the heart isn’t pumping efficiently enough to keep fluid moving.
Swelling that doesn’t indent when you press on it, or that involves thickened, hardened skin, may indicate lymphedema. One specific sign: if you can’t pinch a fold of skin on the top of your second toe, that suggests advanced lymphatic blockage.
Swelling in both legs that spares the tops of the feet, affecting mainly the calves and thighs, is a pattern associated with lipedema, a chronic fat-distribution condition that doesn’t respond to typical edema treatments like elevation and compression.
Persistent swelling that doesn’t improve with home measures, or swelling that keeps coming back, is worth investigating. The cause determines the treatment, and identifying it early makes management much simpler.