Swollen ankles usually result from fluid pooling in the lower legs, and the fastest way to bring that swelling down is to elevate your legs above heart level for about 15 minutes, three to four times a day. Most ankle swelling responds well to a combination of elevation, movement, compression, and dietary changes. The right approach depends on whether your swelling is temporary or keeps coming back.
Elevate Your Legs the Right Way
Elevation works because gravity helps fluid drain back toward your heart instead of collecting around your ankles. The key detail most people get wrong: your legs need to be above your heart, not just propped on a footstool. Lying on a couch or bed with two or three pillows under your calves gets them high enough. Aim for 15 minutes per session, three to four times throughout the day. You’ll often notice a visible difference after just one or two sessions, though persistent swelling takes consistent daily effort over several days.
Use Your Calf Muscles as a Pump
Your calf muscles act as what vascular specialists call a “peripheral heart.” When you walk or flex your feet, these muscles squeeze the veins in your lower legs and push blood upward, dropping foot vein pressure by 60 to 80 percent. That pressure drop is what keeps fluid from leaking out of your blood vessels and into the surrounding tissue. When you sit or stand still for hours, that pump essentially shuts off, and fluid accumulates.
Walking is the simplest fix. Even a five-minute walk every hour makes a meaningful difference if you spend most of your day sitting. When walking isn’t an option, ankle pumps work the same muscle groups: point your toes down toward the floor, then pull them up toward your shin, and repeat for 20 to 30 repetitions. These flexion and extension movements activate the deep and anterior compartments of your calf, which are the muscle groups most responsible for pushing venous blood back up.
Compression Stockings and How to Choose Them
Compression stockings apply graduated pressure to your lower legs, tightest at the ankle and looser toward the knee. This mechanical squeeze helps prevent fluid from settling downward. They come in standardized pressure levels measured in millimeters of mercury (mmHg), and choosing the right level matters.
- 15 to 20 mmHg (mild): The lightest medical compression level. Good for minor daily swelling, long flights, and people on their feet for extended shifts.
- 20 to 30 mmHg (moderate): The most commonly prescribed level for persistent mild-to-moderate swelling. This is often where people start when over-the-counter options aren’t enough.
- 30 to 40 mmHg (firm): A higher therapeutic level used for more significant swelling or vein problems. Usually requires a clinical assessment first.
Start with mild compression if you’ve never used stockings before. Put them on first thing in the morning before swelling builds during the day. They’re harder to get on over already-swollen ankles and less effective once fluid has already pooled.
Cut Back on Sodium
Excess sodium causes your body to hold onto water, and that extra fluid tends to settle in your ankles. Keeping your intake under 2,000 mg per day is the threshold most often recommended for people dealing with fluid retention. For context, a single fast-food meal can easily hit 1,500 mg or more.
The biggest sodium sources aren’t the salt shaker on your table. They’re processed and packaged foods: canned soups, deli meats, frozen meals, sauces, and restaurant dishes. Reading nutrition labels and cooking more meals at home gives you the most control. Potassium-rich foods like bananas, sweet potatoes, and leafy greens help your kidneys excrete excess sodium more efficiently.
Drink More Water, Not Less
It sounds counterintuitive, but drinking more water helps reduce fluid retention. When you’re dehydrated, your body holds onto sodium and water more aggressively. Staying well-hydrated makes it easier for your kidneys to flush out excess salt and waste. There’s no magic number for how much to drink, but if your urine is consistently pale yellow, you’re in good shape.
What Persistent Swelling Can Signal
Temporary swelling after a long flight, a hot day, or hours on your feet is normal. Swelling that comes back day after day or never fully resolves can point to something deeper. Chronic venous insufficiency is one of the most common causes. It happens when the valves in your leg veins stop working properly, allowing blood to pool rather than flow back to your heart. Signs include a heavy or achy feeling in your legs, visible spider veins or varicose veins, skin darkening around the ankles, dry or itchy skin on the lower legs, and swelling that worsens as the day goes on. A duplex ultrasound is the standard test to check for it.
Heart failure is another cause of ankle swelling, particularly when both ankles are affected. When the heart can’t pump efficiently, blood backs up into the legs, ankles, and feet. This type of swelling often comes with shortness of breath, fatigue, and weight gain from fluid retention. Kidney and liver disease can also cause bilateral ankle swelling by disrupting the body’s fluid balance.
One Swollen Ankle Is Different From Two
Pay close attention to whether the swelling affects one ankle or both. Swelling in both ankles usually points to a systemic issue: too much sodium, prolonged sitting, medication side effects (especially blood pressure drugs or anti-inflammatory medications), or an underlying heart or kidney condition.
Sudden swelling in just one leg is a different story. Combined with calf pain, warmth, or redness, it can signal a deep vein thrombosis, a blood clot in a leg vein. This requires immediate medical attention, especially if it develops after a long period of immobility like a flight or surgery. A DVT that breaks loose can travel to the lungs and become life-threatening. If one ankle swells suddenly and hurts, don’t try to wait it out with elevation and ice.
Building a Daily Routine That Works
The most effective approach combines several strategies rather than relying on just one. A practical daily routine looks something like this: put on compression stockings in the morning before your feet hit the floor for more than a few minutes. Stay mindful of sodium throughout the day, especially at meals you don’t prepare yourself. Take short walks or do ankle pumps every hour if your job keeps you seated. Elevate your legs for 15 minutes when you get home and again before bed.
Most people with mild, lifestyle-related ankle swelling see noticeable improvement within a few days of consistent effort. If you’ve been doing all of this for a week or two with no change, or if the swelling is worsening, that’s a sign something beyond daily habits is contributing and worth investigating further.