Swollen ankles usually respond well to a combination of elevation, movement, compression, and dietary changes. The swelling happens when fluid leaks out of tiny blood vessels and accumulates in the tissue around your ankles and feet, often because gravity has been pulling fluid downward all day. Most cases are temporary and manageable at home, but the right approach depends on what’s driving the swelling in the first place.
Why Ankles Swell
Fluid constantly moves between your bloodstream and the surrounding tissue. When something tips that balance, whether it’s sitting too long, eating a salty meal, or a change in medication, fluid pools in your lower legs because they’re the lowest point in your body. The technical term is edema, and it happens when fluid filters out of your capillaries faster than your lymphatic system can drain it back.
The most common everyday triggers are prolonged sitting or standing, high sodium intake, heat, and hormonal shifts during menstruation or pregnancy. Chronic swelling in one or both legs often points to venous insufficiency, where the valves in your leg veins weaken and let blood pool downward. Several classes of medication also cause ankle swelling as a side effect, including calcium channel blockers (like amlodipine and nifedipine), corticosteroids like prednisone, hormone therapies containing estrogen or testosterone, and certain blood pressure drugs like beta blockers. If your swelling started or worsened after beginning a new medication, that connection is worth raising with your prescriber.
Elevate Your Legs Above Your Heart
Elevation is the simplest and fastest way to move fluid out of your ankles. The key detail most people miss: your legs need to be above the level of your heart, not just propped on a footstool. Lie on your back and rest your legs on a stack of pillows, the arm of a couch, or against a wall. Aim for about 15 minutes at a time, three to four times a day. This uses gravity in your favor, helping fluid drain back toward your core where your body can process it normally.
If you can’t lie down, even reclining in a chair with your feet on a high ottoman helps. The higher your ankles relative to your chest, the more effectively fluid drains.
Use Your Calf Muscles as a Pump
Your calf muscles act as a built-in pump for pushing blood and fluid back up your legs. Every time you flex your calves, they squeeze the veins and lymphatic vessels, forcing fluid upward. Research on women with lower-leg swelling found that stimulating the calf muscle pump reversed fluid pooling and accelerated fluid removal even in legs that weren’t visibly swollen.
You don’t need a gym for this. Simple movements work well:
- Ankle pumps: While sitting, point your toes down, then pull them up toward your shin. Repeat 20 to 30 times per session.
- Calf raises: Stand and slowly rise onto your toes, then lower back down. Do 10 to 15 reps several times a day.
- Foot pedaling: Pressing your foot against resistance while seated has been shown to reduce leg fluid volume significantly. Even pressing your feet flat against the floor and lifting your heels counts.
- Walking: A 10 to 15 minute walk engages your calf pump continuously and is one of the most effective options if you’re able.
If you sit for long stretches at work or during travel, doing 30 to 40 foot pumps per hour can make a measurable difference. The goal is consistency throughout the day rather than one long exercise session.
Compression Socks and Stockings
Compression garments apply graduated pressure to your legs, tightest at the ankle and gradually loosening toward the knee or thigh. This external pressure helps keep fluid from settling into your tissue and supports your veins in pushing blood back upward.
Compression levels are measured in millimeters of mercury (mmHg), and the right level depends on how much swelling you’re dealing with:
- 15 to 20 mmHg (mild): Good for occasional swelling from long days on your feet, travel, or mild fluid retention. Available without a prescription at most pharmacies.
- 20 to 30 mmHg (moderate): The most commonly recommended range for persistent swelling and venous insufficiency. Some are sold over the counter, though your doctor may suggest a specific style.
- 30 to 40 mmHg (firm): Typically used for more significant venous problems or lymphedema and usually requires a prescription or professional fitting.
Put compression socks on first thing in the morning before swelling has a chance to build up. If you put them on after your ankles are already puffy, they’ll be harder to get on and less effective. Knee-high styles work well for most ankle swelling.
Cut Back on Sodium
Sodium is the single biggest dietary driver of fluid retention. When you eat more salt than your body needs, your kidneys hold onto extra water to keep the sodium-to-water ratio in your blood balanced. That extra fluid has to go somewhere, and gravity sends much of it to your ankles.
The recommended daily limit is less than 2,300 milligrams, roughly one teaspoon of table salt. Most people consume well above that, largely from processed and restaurant foods rather than the salt shaker. Canned soups, deli meats, frozen meals, soy sauce, cheese, and bread are some of the biggest contributors. Reading nutrition labels and choosing low-sodium versions of staples you eat regularly can bring your intake down substantially without overhauling your entire diet.
Potassium works as a natural counterbalance to sodium. The more potassium you eat, the more sodium your kidneys flush out. A medium banana has about 450 mg of potassium, a medium sweet potato has over 500 mg, and other potassium-rich options include avocados, spinach, oranges, salmon, lima beans, yogurt, and coconut water. Building meals around whole foods naturally increases your potassium while reducing the processed sodium that drives swelling.
Stay Hydrated
It sounds counterintuitive, but drinking enough water actually helps reduce swelling rather than making it worse. When you’re dehydrated, your body responds by holding onto more fluid and sodium, essentially hoarding what it has. Staying well hydrated keeps your kidneys flushing sodium efficiently and prevents the compensatory fluid retention that comes with under-drinking.
Sipping water steadily throughout the day is more effective than drinking large amounts at once. Research shows that sipping maintains a more stable fluid balance in your blood compared to gulping large volumes, which your body processes differently. Plain water is ideal. You don’t need a specific number of glasses; pale yellow urine throughout the day is a reliable sign you’re drinking enough.
Other Strategies That Help
A few additional habits can reduce how much your ankles swell day to day. Avoid sitting or standing in one position for more than 30 to 60 minutes. If your job keeps you seated, set a reminder to stand and walk briefly or do ankle pumps at your desk. On flights or long car rides, get up and move when possible, and wear compression socks preemptively.
Loose clothing around your thighs and waist matters too. Tight waistbands, socks with snug elastic tops, and fitted pants can restrict blood flow returning from your legs and contribute to pooling below the restriction point. Heat also worsens swelling, so soaking in a hot bath or sitting in direct sun on a hot day can make puffy ankles worse. Cool water, on the other hand, causes blood vessels to constrict slightly and can reduce swelling temporarily.
When Swelling Signals Something Serious
Most ankle swelling is harmless and responds to the strategies above. But certain patterns warrant prompt medical attention. Swelling in only one leg, especially if it comes on suddenly with pain, warmth, or redness, can indicate a deep vein thrombosis (blood clot). This is a medical emergency because the clot can break free and travel to your lungs.
Swelling that pits (meaning you press a finger into your skin and the indent stays for several seconds) and doesn’t improve with elevation may point to heart, liver, or kidney problems. Swelling that’s accompanied by shortness of breath, chest pain, or sudden weight gain over a few days also needs evaluation. Chronic swelling with skin that becomes thick, discolored, or develops a brownish tint often signals long-standing venous insufficiency that benefits from professional management beyond home measures.