Styku is a 3D body scanner that uses infrared light to create a digital model of your body in about 35 seconds. It captures hundreds of body measurements, including circumferences, body fat percentage, and muscle-to-fat ratios, without any physical contact or radiation exposure. You’ll find Styku scanners in gyms, fitness studios, medical offices, and sports performance centers.
How the Scanner Works
The system has two main components: a tower with an infrared depth sensor and a rotating platform you stand on. The tower stands about 46 inches tall and weighs around 13 pounds. It uses a depth camera with a resolution accurate to roughly 2 millimeters, meaning it can detect surface-level changes in your body shape that a tape measure would miss.
You step onto the platform, which is about 24 inches square and can support up to 550 pounds. The platform slowly rotates you 360 degrees while the infrared sensor captures depth data from every angle. One full revolution takes 30 to 40 seconds. During that time, the sensor maps millions of data points on your body’s surface and stitches them together into a complete 3D model.
The infrared light is the same type used in a TV remote. There’s no UV exposure, no X-rays, and no physical contact. The scan is completely passive from your perspective: you stand still, the platform turns, and the software does the rest.
What a Scan Measures
Once the 3D model is built, Styku’s software extracts a wide range of metrics from it. The core measurements include circumferences of your waist, hips, chest, arms, and thighs. These are the same measurements a trainer would take with a tape measure, but captured digitally so they’re consistent every time and not subject to human error in tape placement.
Beyond circumferences, the software estimates your body fat percentage and calculates your muscle-to-fat ratio. It provides a body composition breakdown showing how your lean mass and fat mass are distributed, and it ranks your body fat level based on standard classification systems for your age and sex. Some versions of the software also estimate your basal metabolic rate (the calories your body burns at rest) and project how your body shape could change with different fat loss or muscle gain scenarios.
Accuracy Compared to Other Methods
Peer-reviewed research has found Styku’s body fat estimates fall within about 2% of results from a DEXA scan, which is widely considered the gold standard for body composition testing. That’s a meaningful level of accuracy for a system that takes under a minute, involves no radiation, and costs significantly less per scan than DEXA.
For circumference measurements, the 2-millimeter depth resolution means the scanner can reliably detect small changes over time. If you lose half an inch off your waist over six weeks, the scanner will pick that up. This makes it particularly useful for tracking progress rather than relying on a single snapshot.
What the Experience Is Like
Most facilities ask you to wear form-fitting clothing, like compression shorts or a sports bra, so the scanner captures your actual body shape rather than the outline of loose fabric. You step onto the platform, hold a neutral standing position with your arms slightly away from your sides, and stay still for the 30 to 40 seconds it takes to complete one rotation.
Results are typically available immediately. You’ll see a 3D avatar of your body on screen along with all the extracted measurements. Most systems let you compare scans side by side over time, so you can visually see where your body has changed and match that to the numbers. Many facilities email you a detailed report or give you access through an app.
Who Uses Styku and Why
Personal trainers and gym owners use Styku to give clients an objective baseline before starting a program and to track progress beyond what the scale shows. Weight alone doesn’t tell you whether you’re losing fat or muscle, but body composition data does. Seeing a 3D model change shape over time can also be more motivating than watching a number on a scale.
Sports medicine clinics and sports nutrition programs use the scanner for athletes who need precise body composition monitoring. Some weight loss clinics and bariatric practices have adopted it as a lower-cost, radiation-free alternative to DEXA for regular check-ins. Because the scan is fast and noninvasive, it’s practical to repeat every few weeks without any cumulative exposure concerns.
The platform’s 550-pound weight capacity and the system’s zero-radiation design make it accessible to a broad range of body sizes and health situations where repeated scanning is part of the plan.