Anterior pelvic tilt is a posture where your pelvis tips forward, causing your lower back to arch more than it should and your butt to stick out behind you. Nearly everyone has some degree of forward tilt in their pelvis, and that’s normal. The average healthy adult carries about 13 degrees of anterior tilt. It only becomes a problem when the tilt is excessive enough to cause pain, stiffness, or joint strain.
What’s Happening in Your Pelvis
Your pelvis isn’t locked in place. It’s a basin of bone that can rock forward and backward on your hip joints, held in position by the muscles attached to it. When everything is balanced, the pelvis sits relatively neutral, with the front and back roughly level.
With anterior pelvic tilt, the front rim of the pelvis drops down toward the floor while the back rim tilts up. Picture pouring water out of the front of a bowl. This forward rotation pulls your lower spine into a deeper curve (called increased lumbar lordosis), pushes your belly forward, and makes your backside more prominent. From the side, you’ll notice an exaggerated S-shape in the spine.
Why It Develops
The core issue is a muscle imbalance sometimes called lower crossed syndrome. Two groups of muscles get tight, and two opposing groups get weak, creating a predictable pattern. Your hip flexors (the muscles at the front of your hips that lift your knees) and your lower back muscles become short and stiff. At the same time, your abdominals and glutes become long and weak. The tight muscles pull the pelvis forward, and the weak muscles can’t pull it back.
Prolonged sitting is the most common driver. When you sit for hours each day, your hip flexors stay in a shortened position. Over time, they adapt to that length and resist stretching back out. Meanwhile, your glutes and deep abdominal muscles aren’t doing much work, so they gradually lose strength. The result is a pelvis that defaults to a forward-tipped position even when you stand up.
Pregnancy is another common cause. As the baby grows and body weight shifts forward, the pelvis tilts anteriorly to compensate. By the final month, most pregnant women have a noticeable increase in anterior pelvic tilt, which often resolves postpartum as the body rebalances but sometimes lingers if the core muscles don’t fully recover.
How Much Tilt Is Normal
There’s no single number that separates “normal” from “too much.” Healthy adults without any pain show a wide range of pelvic tilt. In radiographic studies, asymptomatic adults average around 13 degrees of anterior tilt, but the range spans from about negative 4.5 degrees (a slight backward tilt) all the way to 27 degrees of forward tilt, with no symptoms at either end.
Women tend to have slightly more anterior tilt than men. In studies of healthy college students, women averaged about 12 degrees while men averaged closer to 9 degrees. Among collegiate athletes, the numbers were similar: roughly 12 degrees for women and 10 for men. Because of this natural variability, clinicians generally compare your tilt to your own baseline over time rather than measuring you against a universal cutoff.
Symptoms You Might Notice
Many people with anterior pelvic tilt feel nothing at all. The tilt itself isn’t inherently painful. When it does cause problems, the most common complaint is lower back pain. The exaggerated spinal curve compresses the small joints at the back of each vertebra and increases pressure on the discs between them. This can produce a dull ache across the lower back that worsens after standing or walking for long periods.
You might also notice tightness at the front of your hips, especially when you try to take a full stride while walking or running. Some people develop hip pain or a pinching sensation deep in the groin. Because the tilt changes how forces travel through the spine and hips, it can eventually contribute to joint wear if left unaddressed for years.
A quick visual check: stand sideways in front of a mirror. If your belt line angles noticeably downward toward the front of your body, and you see a pronounced arch in your lower back with your belly pushing forward, you likely have more anterior tilt than average.
How It’s Assessed
A physical therapist or orthopedic provider can evaluate your pelvic tilt with a few simple tests. One of the most common is the Thomas test, which checks for tight hip flexors. You lie on your back at the edge of a table, pull one knee to your chest, and let the other leg hang down. If the thigh of the hanging leg won’t drop to the level of the table, your hip flexors on that side are shortened. The pattern of restriction (whether the thigh lifts, the knee straightens, or the leg drifts outward) tells the examiner which specific muscles are involved.
For a more precise measurement, clinicians can use X-rays or smartphone-based inclinometer apps. One validated app produced measurements within about 0.3 degrees of traditional imaging software, with differences that never exceeded the 3 to 5 degree margin considered clinically meaningful. These tools are useful for tracking changes over time rather than establishing a single diagnostic number.
Correcting Anterior Pelvic Tilt
Because the problem is a muscle imbalance, the fix targets both sides of the equation: stretch the tight muscles and strengthen the weak ones.
Stretching Tight Hip Flexors
The half-kneeling hip flexor stretch is a good starting point. Drop one knee to the ground with the other foot planted in front of you, then gently shift your weight forward until you feel a pull at the front of the hip on the kneeling side. Keep your torso upright and avoid arching your back (which defeats the purpose). Hold for 30 seconds on each side, repeat for three sets, and aim for at least twice a day. Consistency matters more than intensity here. You’re trying to convince chronically shortened tissue to accept a new resting length, and that takes weeks of daily work.
Lower back stretches like the child’s pose or a lying knee-to-chest pull can also help relieve the tightness in the muscles running along your spine that contribute to the forward pull.
Strengthening Weak Glutes and Abs
Glute bridges are one of the simplest and most effective exercises. Lying on your back with knees bent, you squeeze your glutes to lift your hips off the floor, hold briefly at the top, and lower back down. Focus on tucking your pelvis slightly under as you lift, which trains the exact motion you’re trying to restore.
For the abdominals, dead bugs and planks work well because they train your core to stabilize the pelvis rather than just flexing the trunk. The goal is teaching your abs to hold the front of the pelvis up, counteracting the downward pull of the hip flexors. Bird-dogs (extending opposite arm and leg from a hands-and-knees position) build both glute and deep core strength simultaneously.
Changing Your Daily Habits
Exercise alone won’t fix the tilt if you spend eight or more hours a day reinforcing the pattern. Breaking up long sitting periods matters. Standing for a few minutes every 30 to 45 minutes gives your hip flexors a chance to lengthen and your glutes a reason to activate. If you work at a desk, alternating between sitting and standing throughout the day is one of the most practical changes you can make. When you do sit, keeping your feet flat and your pelvis positioned so you feel your weight on your sit bones (rather than rolling forward onto your thighs) helps maintain a more neutral position.
Most people see meaningful improvement within four to eight weeks of consistent stretching, strengthening, and habit changes. The tilt didn’t develop overnight, and it won’t resolve overnight, but the pattern is highly responsive to targeted effort. For severe cases where the tilt is already affecting spinal or hip joints, a physical therapist can design a more structured program and use manual techniques to accelerate progress.