--- title: Body Fat Estimator: What’s My Body Fat? (Free, No Photo Upload) url: https://progresslens.app/tools/body-fat-estimator/ language: en updated: 2026-11-13 --- # Body fat estimator Pick the description that matches what you see in the mirror, add a tape measurement or two, and get a body-fat range. No photo upload, no sign-up. Short answer Pick the description that looks like you and add your height, waist and neck: this free estimator combines that look with the US Navy tape formula and returns a body-fat range (usually ±2.5–4 points), your ACE category and a link to what that level looks like. It runs in your browser; nothing is uploaded. Calculated in your browser. Nothing you enter is sent anywhere. ## How the estimate works - Your look. Each description matches a level on our [body fat chart](https://progresslens.app/body-fat/). Trained observers judging by eye are usually within about 3–5 points. - Your tape. With height, waist and neck (and hips for women) we run the US Navy formula (Hodgdon & Beckett, 1984), typically within about 3–4 points of lab methods. - Together. When the two agree, the range narrows; when they don’t, we say so and suggest what to re-check. ## Why there’s no AI photo upload A single photo can swing the number by several points with lighting and pose alone. In our [analysis of 10,218 Reddit posts](https://progresslens.app/research/what-lifters-ask-about-body-fat/), estimates from different AIs for the same person disagreed by 2 to 8 points. Your look plus a tape measure is free, private and just as useful for a first number. What really tells you something is the change over weeks, from matched photos and the same tape measurement. That’s what the ProgressLens app tracks, with an AI read of your photos. ## See how far you’ve come. Take a check-in, tap AI Analyze and get your Progress Report: body-fat range, what changed, fat or muscle, and whether to cut or bulk. On iPhone, iPad and Android, with no account. Your photos stay on your phone. **See also:** [What is my body fat percentage?](https://progresslens.app/guides/what-is-my-body-fat-percentage/) · [Is there an app that measures body fat?](https://progresslens.app/guides/is-there-an-app-that-measures-body-fat/) · [The ChatGPT body fat prompt](https://progresslens.app/guides/chatgpt-body-fat-prompt/) · [Body fat for abs](https://progresslens.app/body-fat/abs/) FAQ ## Frequently asked questions **How can I estimate my body fat without a scale?** Compare yourself with a body fat chart and take a tape measurement of your waist and neck (and hips for women). This tool combines both. It takes a minute and costs nothing. **How accurate is a visual body fat estimate?** Usually within about 3–5 points for a trained eye, less accurate for untrained eyes and in flattering or harsh light. Adding a tape measurement makes it steadier. **Do I need to upload a photo?** No. Nothing leaves your browser. You pick a description, and the maths runs on your device. **What body fat percentage do I need for abs?** Most men see abs at about 10–12% and most women at about 18–20%. See the [how long to get abs calculator](https://progresslens.app/tools/how-long-to-get-abs-calculator/). **What’s the most accurate way to measure body fat?** A DEXA scan is the practical gold standard. For tracking change at home, the same tape measurement and matched photos every 2–4 weeks work well. ## More free tools [Bulk or cut calculatorCut, lean bulk or recomp, with a weekly rate.Open →](https://progresslens.app/tools/bulk-or-cut-calculator/)[TDEE calculatorMaintenance calories, and to cut or bulk.Open →](https://progresslens.app/tools/tdee-calculator/)[Macro calculatorProtein, carbs and fat for your goal.Open →](https://progresslens.app/tools/macro-calculator/)[GLP-1 weight loss calculatorOzempic and Mounjaro trial averages for you.Open →](https://progresslens.app/tools/glp-1-weight-loss-calculator/)[Protein calculatorGrams a day for muscle, fat loss or GLP-1.Open →](https://progresslens.app/tools/protein-calculator/)[How long to get absWeeks and date to your target body fat.Open →](https://progresslens.app/tools/how-long-to-get-abs-calculator/) --- ProgressLens is an AI progress photo app for iPhone, iPad and Android that turns your check-in photos and tape measurements into a Progress Report: your body-fat range, what changed, whether you are losing fat or muscle, and whether to cut, lean bulk, recomp or maintain. App Store: https://apps.apple.com/app/progresslens/id6806300575 Google Play: https://play.google.com/store/apps/details?id=app.progresslens