Choose your next step
Body Composition and Progress Tools
Understand a measurement, interpret your physique, or make a more informed next decision. Choose a tool by the information you have.
Start with your input
Measurement calculators work with numbers you enter. Photo analysis estimates visible physique traits. Neither replaces a clinical assessment.
Height · weight · tape measurements
Navy Body Fat Calculator
Estimate body fat from tape measurements using the selected equation. Read the measurement protocol before entering your numbers.
Age · height · weight · activity
TDEE Calculator
Estimate daily energy needs from a resting-energy equation and an activity assumption.
Weight · daily calorie target
Macro Calculator
Turn a calorie target into an illustrative protein, carbohydrate and fat allocation.
Maintenance calories · deficit percentage
Calorie Deficit Calculator
Explore how a chosen percentage changes a maintenance-calorie estimate.
Waist · height
Waist-to-Height Ratio Calculator
Calculate waist circumference divided by height using consistent units.
Two weights · two waist measurements · time
Body Recomposition Tracker
Compare entered weight and waist changes without pretending to measure muscle gained or fat lost.
Room · camera · pose checklist
Progress Photo Setup Planner
Build a repeatable photo setup and print a checklist for your next session.
Two photos · no account
Compare Your Progress Photos
Align two photos in your browser. Compare side by side, with a slider, or as an overlay, then download a new PNG.
Reference set · two illustrative ranges
Body fat visualizer
Compare two synthetic references from the existing visual guide. Illustrations are not measured body-fat results or a prediction of your body.
Two shoulder · waist · hip measurement sets
Body measurement visualizer
Compare circumference lengths, numerical changes and shoulder-to-waist ratios. The diagram does not reconstruct your body shape.
Height · weight · body-fat estimate
FFMI calculator
Calculate fat-free mass index and height-normalized FFMI. Explore how a body-fat estimate changes the result.
Shoulder · waist measurements
V-taper calculator
Compare shoulder and waist measurements with a shoulder-to-waist ratio.
Physique context · goal
Cut, bulk or recomp?
Explore a starting direction with the existing decision preview and understand its limits.
Photo
Photo body-fat estimate
Start a web scan for an estimated body-fat range. A photo estimate is not a laboratory measurement.
Build a repeatable tracking routine
A consistent method makes the next comparison more useful than adding another metric.
Common questions
Which tools need a photo?
The photo body-fat estimate opens the web scan. FFMI and V-taper use measurements you enter, so they do not require a body photo.
Can a calculator measure my body fat?
A calculator applies a formula to its inputs. FFMI requires an existing body-fat estimate; it does not independently measure body fat. Photo analysis also produces an estimate.