Body Scanning
AI body scanner:
your shape, drawn in 3D.
A front photo, plus a side photo if you like. Take them in the app or upload them in your browser. No calipers, no scanner, no gym visit. Pelaris turns them into your shape archetype, your proportion trends, and a live 3D Body Blueprint that updates every time you check in.
Pelaris's AI body scanner reads your shape from a front photo, and a side photo adds a fuller read. It estimates your shoulder, waist and hip measurements and a body fat range, and draws a 3D Body Blueprint shaped by those measurements, never your face, your skin tone or the photo itself. Have a DEXA or InBody report? Upload it and your measured numbers lead. The AI picks a hairstyle roughly like yours from 29 styles, never a colour. Change it, or choose No hair, any time. Your first scan is free.
Interactive Body Ratios & Archetype Tool
Interactive Body Ratios & Archetype Calculator
0.45
Below 0.50 (the usual guide)
0.83
Below WHO 0.9 cut-off
24.6
18.5 to 24.9 (WHO adult range)
3D Blueprint
Outline
V-Taper Build
Broad shoulders over a narrow waist, the classic athletic taper.
Broad shoulder-to-waist ratio driven by upper-back, lat and deltoid width. Common in: Swimmers, gymnasts, rugby backs.
All 6 Pelaris Body Shape Archetypes
Compare how Pelaris maps proportions across all six builds. Switch Male / Female above to see both 3D Blueprint models.
A streamlined endurance build that carries speed and distance with ease.
Runners, distance swimmers, triathletes
Broad shoulders over a narrow waist, the classic athletic taper.
Swimmers, gymnasts, rugby backs
A powerful, solid frame built for moving heavy loads.
Powerlifters, strongmen, rugby forwards
A strong lower-body engine with power through the hips and legs.
Track cyclists, sprinters, rowers
Balanced shoulders and hips around a defined waist, ready for any training style.
Functional fitness, hybrid athletes
A sturdy frame with strength through the core, ready for any training style.
Heavyweight lifters, athletes in a rebuilding phase
For adults aged 18 and over. A general fitness estimate, not a medical assessment or diagnosis.
The link carries the numbers you entered in the part of the address after the #, which is never sent to a server. Share it only with people you are happy to show those numbers to.
About these numbers: Formula, guard-rails & 3 peer-reviewed citations ▾
WHtR = Waist ÷ Height (< 0.50) · WHR = Waist ÷ Hips · BMI = kg ÷ m²
A higher BMI with a Waist-to-Height Ratio below 0.50 can reflect muscle rather than central body fat. These adult cut-offs are for people aged 18 and over. The archetype is a quick tape-measure guess: the Body Scan reads your shape from photos and can land somewhere different. Tape ratios are general fitness estimates, never a medical assessment or diagnosis, and a doctor is the right person to ask about your health.
- • Waist-to-height ratio earns its place on your card, this review of 31 studies found it a sharper screening signal than BMI or waist alone. [Source]
- • Your waist-to-hip ratio is read against the World Health Organization's expert consultation, the global reference for what waist measurements genuinely tell us. [Source]
- • We show BMI exactly as the World Health Organization defines it, using the same adult cut-offs public health uses worldwide. [Source]
General fitness and training estimates only, labelled EST. Not medical advice or a clinical diagnosis.
How it works
A photo or two. About a minute. No hardware.
Body scanning in Pelaris skips the gym booth and the calipers. Open the Body tab, take a front photo, add a side photo if you like, and the AI does the rest. No specialised camera and no appointment. Take your photos on your phone, or upload them from your laptop.
A front photo, a side photo if you like
Photos taken in the app or uploaded, from the same angles each time. That consistency is what makes the trend readable.
AI reads your proportions
Shoulder, waist and hip proportions are estimated from the photos and classified into a shape archetype, the read a coach would give you by eye, done in seconds.
Results land where you look
Your latest scan, archetype, and what changed sit on Today and in the Body tab. No separate report to go and dig up.
Measured results
Already have an InBody or a DEXA? Bring it in.
Upload the result as a PDF, a screenshot or a photo, and Pelaris reads the numbers for you. It also reads any other written record of your measurements: a printout from a gym scale, a photo of your scale’s screen, a note from your coach, even a handwritten note.
You check every number before anything is saved. Your measured weight, body fat and lean mass then sit beside your photo scans, so your trend has a real measurement to lean on.
Handwriting can be tricky to read, so you always get the final say.
What you get
An archetype, proportion tracking, and a narrative that explains it
Every scan classifies your build into a shape archetype and tracks the three proportions that define it: shoulders, waist and hips. After each check-in, the AI writes a short trend narrative in plain English, what changed since last time, and what it likely means given the training you’ve been logging.
Example: “Your shoulder-to-waist ratio has shifted since your last scan, and it lines up with the strength work you’ve been logging. A small, consistent change, the kind that shows up in a trend long before it shows up in the mirror.”
Shape archetypes
Six archetypes, one clear read on your build
Pelaris classifies your proportions into one of six archetypes. It is not a verdict, it is a starting point, and it moves as your training does.
The Body Blueprint
A 3D figure shaped by your own data
The Body Blueprint turns your measurements into a live, rotatable 3D figure. Not a stock model, yours. Drag to rotate it, and the zones that have changed most since your last scan are highlighted subtly, so you can see where the change is actually happening.
Example: Shoulders up 4cm, waist down 6cm, hips down 5cm since the last check-in. Three numbers, and the Blueprint shows exactly where they landed on your frame.
Progress over time
Watch your shape change, don’t just read about it
Side by side, or overlaid
Pick any two check-ins and compare them side by side, with the exact centimetre and kilogram deltas underneath. Prefer one figure. Switch to Overlay and watch the two scans blend into a single view.
A timeline you can press play on
Every check-in becomes a checkpoint on a timeline. Press play and your Blueprint moves from your first scan through every check-in since, all the way to today. Scrub to any point, pause, and rotate.
Muscles worked
An anatomical map of what you actually trained
Body scanning covers your shape over weeks and months. Muscles worked this week zooms in on the last seven days, an anatomical body map that highlights which muscle groups your logged sessions actually hit. It reads straight from your training log, so it reflects the sets you did, not the plan you meant to do.
Honest by design
A trend line, not a verdict
Body scanning tracks visible shape and proportion trends. It is not a medical instrument, and it does not replace a DEXA scan, a doctor, or your own judgement. What it is good at is the same thing a coach watching you over months is good at, noticing the pattern in the noise. The research behind BMI and the waist ratios, and what each one can honestly tell you, is set out on our body metrics science page.
The consistency of your photos matters more than any single scan. Same light, same distance, the same poses. Consistent photos make the trend easier to read, even though any one scan has some wobble in it. For the honest, method-by-method version, read how AI photo analysis stacks up against DEXA, bioimpedance, and 3D scanners.
Your photos, your control
A front and side photo is genuinely sensitive to hand over. Your photos are analysed by AI to work out your proportions and shape archetype, and what gets saved to your account afterwards is the resulting measurements, not a photo library.
Review your measurements, delete a scan, or turn body scanning off entirely, any time, from your account.
Read our Privacy Policy →Scanning is optional, never required to use Pelaris
What’s stored is your measurements, not a photo library
Review or delete any scan from your account at any time
Full detail in the Privacy Policy, including how photos are handled
Questions
Body scanning, answered
What photos do I need for a body scan? +
Does the AI body scanner work online, in my browser? +
Is this the same as a DEXA scan or a body fat percentage test? +
Can I upload my InBody or DEXA results? +
What happens to my photos after a scan? +
Which coaching apps track body measurements from photos? +
How often should I scan? +
See your shape, mapped
A photo or two. No credit card, no hardware.