Swollen feet and ankles usually respond well to a few simple strategies you can start at home: elevating your legs, cutting back on salt, wearing compression socks, and moving more throughout the day. Most cases stem from fluid pooling in the soft tissue below your knees, often triggered by gravity, diet, or long periods of sitting or standing. The fixes are straightforward, but the right approach depends on what’s causing the swelling in the first place.
Why Feet and Ankles Swell
Your body constantly moves fluid between your bloodstream and the tissue surrounding it. Swelling happens when that exchange tips out of balance. The main culprits are increased pressure inside your blood vessels (from standing all day, for example), leaky vessel walls (from inflammation or injury), too much sodium pulling water into your tissues, or sluggish drainage through your lymphatic system. Pregnancy, excess body weight, certain medications like blood pressure drugs or steroids, and hot weather can all shift the balance toward fluid buildup.
When you press a swollen area and a visible dent lingers before slowly filling back in, that’s called pitting edema. The deeper the dent and the longer it takes to rebound, the more fluid has accumulated. A shallow 2 mm dent that bounces back immediately is mild. A deep 8 mm pit that takes two to three minutes to refill signals more significant fluid retention that likely needs medical attention beyond home remedies.
Elevate Your Legs Above Your Heart
Elevation is the fastest way to start draining fluid from your feet. Gravity is what pulled the fluid down there, and gravity is what moves it back. Lie down and prop your legs on a pillow or cushion so your ankles sit above the level of your heart. Research on post-surgical ankle swelling found that even low elevation with a standard pillow (about 10 cm) produced satisfactory swelling reduction, though higher elevation (around 30 cm) moved fluid more effectively. Sessions of 20 minutes are enough to make a measurable difference in leg volume.
For the best results, aim for two to three elevation sessions per day. If you work at a desk, even reclining on a couch with your feet up during lunch helps. At night, placing a pillow under your calves keeps your feet slightly elevated while you sleep.
Reduce Your Sodium Intake
Sodium acts like a sponge for water in your body. The more sodium circulating in your blood, the more fluid your tissues hold onto. For most people dealing with swelling, keeping sodium between 1,500 and 2,000 mg per day is a reasonable target. The American Heart Association recommends no more than 2,300 mg for the general population, and lower for people with heart-related conditions.
The tricky part is that most dietary sodium doesn’t come from the salt shaker. It hides in processed foods, canned soups, deli meats, frozen meals, bread, and restaurant dishes. Reading nutrition labels and cooking more meals from whole ingredients are the two most effective ways to get sodium under control. Swapping salty snacks for potassium-rich foods like bananas, sweet potatoes, and leafy greens also helps, since potassium works alongside sodium to regulate your body’s fluid balance.
One counterintuitive tip: drink more water, not less. When you’re dehydrated, your body holds onto fluid more aggressively. Staying well-hydrated makes it easier for your kidneys to flush excess sodium and waste, which actually reduces swelling over time.
Wear Compression Socks
Compression socks apply graduated pressure to your lower legs, squeezing tightest at the ankle and gradually loosening toward the knee. This pressure helps push fluid back up toward your heart instead of letting it settle in your feet.
Compression levels are measured in millimeters of mercury (mmHg), and the right level depends on how much swelling you have:
- 15 to 20 mmHg: Available over the counter. Good for mild ankle swelling, long flights, or days when you’ll be on your feet for hours.
- 20 to 30 mmHg: For moderate swelling, varicose veins, or post-surgical recovery. Often recommended by a provider.
- 30 to 40 mmHg: For chronic venous insufficiency, lymphedema, or severe varicose veins. Requires medical guidance.
Start with a lower compression level if you’ve never worn them before. Put them on first thing in the morning before swelling builds up during the day. If they leave deep marks, feel painful, or cause numbness or tingling, the fit or pressure level is wrong.
Move Throughout the Day
Your calf muscles act as a pump for the veins in your lower legs. Every time you walk, flex your feet, or shift your weight, those muscles squeeze blood and lymph fluid upward. When you sit or stand still for hours, that pump shuts off and fluid accumulates.
If your job keeps you seated, set a reminder to stand and walk for a few minutes every hour. Simple ankle circles and calf raises at your desk also activate the pump without requiring you to leave your chair. If you stand for long stretches, shifting your weight from foot to foot and taking short walking breaks serves the same purpose. Even a 10-minute walk can noticeably reduce end-of-day swelling.
Swimming and water exercises are particularly effective because the water pressure around your legs mimics compression while the movement activates your calf muscles. If you have access to a pool, spending 20 to 30 minutes walking or doing gentle laps can provide both benefits at once.
Try Cold Therapy and Massage
For swelling related to a minor injury or a long day on your feet, a cold pack wrapped in a towel and applied for 15 to 20 minutes can reduce inflammation and constrict blood vessels, slowing the flow of fluid into the tissue. Alternate 20 minutes on with at least 20 minutes off to protect your skin.
Gentle massage can also help move fluid out of your feet and ankles. Use light, sweeping strokes that start at your toes and move upward toward your knees, following the direction fluid needs to travel. This is especially helpful paired with elevation. Avoid deep pressure over areas that are red, warm, or painful, as these could signal an infection or blood clot rather than simple fluid retention.
When Swelling Points to Something Serious
Most foot and ankle swelling is harmless, but certain patterns warrant prompt medical attention. Swelling in only one leg, especially if it’s accompanied by warmth, redness, or a deep aching pain in the calf, can signal a deep vein thrombosis (a blood clot in the leg). This becomes an emergency if you also develop sudden shortness of breath, chest pain that worsens when you breathe, a rapid pulse, dizziness, or coughing up blood. These are signs the clot may have traveled to your lungs.
Swelling that develops gradually in both legs and doesn’t improve with elevation could point to heart, kidney, or liver problems. If pressing your shin leaves a deep dent that takes more than 15 seconds to fill back in, or if the swelling is spreading up your legs, those are signs to get evaluated rather than manage at home. Swelling that appears suddenly alongside weight gain of more than two to three pounds in a day also suggests your body is retaining a significant amount of fluid.
Medications That Help
When home strategies aren’t enough, your provider may prescribe a diuretic, commonly called a water pill. These medications help your kidneys release more sodium and water through urine, reducing the total fluid volume in your body. They’re commonly used for swelling related to heart failure, kidney disease, or chronic venous problems.
Diuretics can cause side effects including fatigue, muscle cramps, dizziness, and electrolyte imbalances, particularly low potassium. Your provider will likely monitor your blood levels periodically and may recommend potassium or magnesium supplements to replace what the medication flushes out. If you experience heart palpitations, severe dizziness, or signs of dehydration while taking a diuretic, that’s worth a call to your provider.
Some swelling is a side effect of medications you’re already taking. Calcium channel blockers (a common blood pressure drug), certain diabetes medications, steroids, and some antidepressants can all cause fluid retention. If your swelling started around the same time as a new prescription, mention the timing to your provider. Switching to an alternative medication sometimes resolves the problem entirely.