Weight Diary · BMI Calculator vs BMI Calculator・Weight Diary

Calculate BMI from height and weight in metric or imperial units. View a labeled gauge and adult reference categories, copy or share the result, and save today’s weight without retyping. Keep a dated weight history, edit or delete readings, and explore a chart with individual readings and a clearly labeled logged-day average trend estimate when enough data is available. Choose an optional lose, gain or maintain direction, or just track. Set your own reference or range. Weekly consistency recognizes check-ins, not lower weight. Choose your cadence, pause or hide encouragement. Daily reminders are optional and separate from weekly consistency. All features are free, with ads and no subscription or account required. Weight records stay on this device; calculation and logging work offline. Ads may use internet. No account-based cloud synchronization. BMI is an adult screening measure, not a diagnosis or direct body-fat measurement. It does not distinguish muscle from fat and is not intended for children or pregnancy. The app does not prescribe a target weight, diet or rate of change. Ask a healthcare professional for personal advice.

Get a BMI result without converting measurements first. Enter height in centimeters or feet and inches, then pair it with kilograms, pounds, or stones. Adult results are placed against WHO thresholds and include an estimated healthy-weight range for the entered height. For ages 2–19, the app calculates CDC BMI-for-age percentile from sex and exact age. Adult and child profiles, their records, and their interpretation rules stay separate. Store weight entries locally on your device, import or export CSV, and set a weekly reminder delivered by the device. Seven identified medical sources show the basis for the methods. Trend charts, complete history, and adult goals require a subscription. Subscription-only formula estimates cover adult body fat at ages 20–83 with BMI 13.9–40.9, and resting and daily energy at ages 20–78. On iOS, importing and writing Body Weight through Apple Health require a subscription and explicit authorization. The integration accesses no other Health data, does not run in the background, and the app sends no Health data to Zeroplay or any developer server. Only a confirmed adult device owner can be linked to Apple Health. BMI is a screening measure, not a medical diagnosis. It cannot determine body composition or explain a child’s growth on its own. Discuss individual results and health decisions with a qualified healthcare professional. Terms of Use: https://zeroplay.io/docs/legal/terms-of-service Privacy Policy: https://zeroplay.io/docs/legal/privacy-policy