The fastest way to reduce ankle swelling is to elevate your legs above heart level, apply ice, and use gentle compression. Most mild swelling from standing, sitting, or a minor injury responds well to these steps within a few hours to a few days. If the swelling is chronic, persistent, or appears suddenly in one leg, the cause may be something that needs medical attention.
Elevate Above Your Heart
Elevation works because gravity helps fluid drain away from your ankles and back toward your core. The key detail most people miss: your ankles need to be higher than your heart, not just propped on a footstool. Lying on a couch or bed with your legs resting on a stack of pillows gets you into the right position. Aim for about 15 minutes per session, three to four times a day.
If you work at a desk or spend most of your day seated, even short elevation breaks make a difference. Timing matters more than duration. Consistent short sessions throughout the day move more fluid than one long stretch at night.
Apply Ice the Right Way
Ice constricts blood vessels and slows the flow of fluid into swollen tissue, which is especially useful after an injury like a sprain. Keep ice on for 10 to 20 minutes at a time, but no longer than 20 minutes. Icing past that point can damage skin and underlying tissue. Space sessions at least one to two hours apart, and always put a thin cloth or towel between the ice pack and your skin.
Ice is most effective in the first 48 to 72 hours after an acute injury. For chronic or non-injury swelling, it can still provide temporary relief, but the other strategies in this article will do more of the heavy lifting.
Use Compression Socks or Wraps
Compression works by applying steady, graduated pressure that prevents fluid from pooling in your lower legs. The pressure is measured in millimeters of mercury (mmHg), and picking the right level matters.
- 8 to 15 mmHg (mild): Good for everyday prevention if you sit or stand for long stretches, during pregnancy, or for minor end-of-day puffiness.
- 15 to 20 mmHg (moderate): Better for noticeable swelling from standing jobs, travel, mild varicose veins, or pregnancy-related discomfort.
- 30 mmHg and above: These require a prescription and are reserved for conditions like chronic venous insufficiency or severe varicose veins.
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, the fit will be off and they won’t work as well.
Move Your Ankles and Calves
Your calf muscles act as a pump. Every time they contract, they squeeze fluid and blood upward through your veins. Sitting or standing still for hours lets that fluid settle into your ankles. Simple exercises can restart the pump even if you’re stuck in a chair or recovering from an injury.
A routine from Memorial Sloan Kettering recommends doing each movement 10 times, twice a day:
- Heel and toe raises (seated): Sit with your feet flat on the floor. Pull your toes up toward your shins while your heels stay planted, then reverse it by pointing your toes down and lifting your heels.
- Ankle circles: Sitting or lying down, rotate one ankle clockwise 10 times, then counterclockwise 10 times. Repeat with the other ankle.
- Heel raises (standing): Stand with feet about six inches apart. Slowly rise onto your toes, then lower back down.
Walking is the simplest version of this. Even a five-minute walk engages the calf pump and helps move fluid out of your ankles. If mobility is limited, the seated exercises alone can make a noticeable difference.
Cut Back on Salt
Sodium causes your body to hold onto water. The more salt you eat, the more fluid your body retains, and gravity pulls that extra fluid to your ankles and feet. Most people eat well over 3,000 mg of sodium per day. For people dealing with persistent swelling, a target closer to 1,500 to 1,800 mg daily can meaningfully reduce fluid retention.
The biggest sources of hidden sodium are processed and packaged foods: canned soups, deli meats, frozen meals, bread, condiments, and restaurant dishes. Cooking at home with fresh ingredients gives you far more control. Reading nutrition labels for sodium content, rather than just tasting for saltiness, is the most reliable way to track your intake. Some foods that don’t taste salty at all (like bread or cereal) can contain surprisingly high amounts.
Staying hydrated also helps. It sounds counterintuitive, but drinking enough water signals your kidneys to release excess fluid rather than hold onto it. Dehydration triggers sodium retention, which makes swelling worse.
When Swelling Points to Something Bigger
Occasional ankle swelling after a long flight, a hot day, or hours on your feet is common and usually harmless. But swelling that doesn’t go away with elevation and basic care, or that keeps coming back, can signal an underlying condition that needs treatment.
Heart failure causes blood to back up in the legs and ankles because the heart isn’t pumping efficiently. This swelling is typically in both legs and worsens throughout the day. Kidney disease leads to a buildup of fluid and salt in the blood, producing swelling in the legs and sometimes around the eyes. Liver damage from cirrhosis can cause fluid to accumulate in the abdomen and legs. These conditions all cause bilateral swelling, meaning both ankles swell together.
When a doctor identifies one of these underlying causes, they may prescribe water pills (diuretics). These medications work by helping your kidneys flush extra salt and water into your urine, reducing the total amount of fluid your body retains. Different types target different parts of the kidney, and your doctor chooses one based on the specific condition driving the swelling.
Red Flags That Need Urgent Attention
Swelling in only one leg is a different situation. If one ankle or calf becomes swollen, painful, warm to the touch, or changes color (turning red or purple), it could be a blood clot known as deep vein thrombosis (DVT). The pain often starts in the calf and feels like cramping or deep soreness. DVT requires prompt medical treatment because the clot can break loose and travel to the lungs.
A clot that reaches the lungs causes a pulmonary embolism, which is a medical emergency. Warning signs include sudden shortness of breath, chest pain that worsens with deep breathing or coughing, a rapid pulse, dizziness, fainting, or coughing up blood. If you experience any of these alongside leg swelling, call emergency services immediately.