Weight loss timelines, deficit planning, and safe rate calculators. Browse our free weight loss tools below — all calculators are instant, accurate, and require no sign-up.
BMI Change Tracker Calculator — Track your BMI over time and visualize category transitions from obese to overweight to normal. See how weight changes affect your BMI classification.
Body Fat Loss Timeline Calculator — Estimate how long it will take to reach your target body fat percentage. Week-by-week projection with lean body mass preservation tracking.
Calorie Balance Calculator — Track your daily calorie balance: intake minus expenditure. See your net surplus or deficit and how it translates to weekly weight change.
Calorie Deficit for Weight Loss Calculator — Calculate the exact daily calorie deficit needed to reach your weight loss goal. Compares deficit sizes, timelines, and estimated weekly loss rates.
Goal Weight Timeline Calculator — Calculate exactly how long it will take to reach your goal weight with adaptive TDEE recalculation. Week-by-week projections that account for metabolic slowdown.
Ideal Race Weight Calculator for Runners — Calculate your optimal racing weight using the Stillman formula. See how body weight affects race performance with the 2-seconds-per-mile-per-pound estimate.
Mini Cut Calculator — Plan a short aggressive cut during a bulk phase. Calculate the optimal 4-6 week mini cut deficit, protein needs, and expected fat loss while preserving muscle.
Newborn Weight Percentile Calculator — Calculate your newborn's weight percentile using WHO growth charts. See where your baby falls compared to age and sex-matched peers from birth to 24 months.
Pet Weight Management Calculator — Calculate your dog or cat's ideal weight and daily calorie needs. Uses Body Condition Score (BCS) to estimate healthy weight and feeding guidelines.
Postpartum Weight Loss Timeline Calculator — Calculate a realistic postpartum weight loss timeline. See how long it takes to return to pre-pregnancy weight with breastfeeding adjustments and safe pacing.
Safe Weight Loss Rate Calculator — Calculate your personalized safe weight loss rate based on body weight, body fat percentage, and health factors. WHO and medical guidelines applied to your situation.
Water Weight Loss Calculator — Estimate how much of your weight loss is water vs fat. Understand how sodium, carbs, and hydration affect the scale and set realistic expectations.
Wedding Weight Loss Planner Calculator — Plan safe weight loss for your wedding day. Get a personalized timeline with weekly milestones, calorie targets, and dress fitting checkpoints.
Weight Cut Calculator for Combat Sports — Plan a safe weight cut for MMA, boxing, wrestling, or judo. Calculate water manipulation, glycogen depletion, and rehydration timelines for making weight.
Weight Loss Competition Calculator — Fair scoring for weight loss challenges. Calculate percentage of body weight lost for equitable comparison across different starting weights.
Weight Loss Health Improvement Calculator — See how weight loss improves your health markers. Estimate reductions in blood pressure, diabetes risk, cholesterol, and joint pain per percentage of body weight lost.
Weight Loss Percentage Calculator — Calculate what percentage of your body weight you have lost. Track medically meaningful milestones at 5%, 10%, and 15% loss thresholds.
Weight Loss Surgery Comparison Calculator — Compare bariatric surgery options: gastric bypass, sleeve gastrectomy, and gastric band. See expected weight loss, timelines, and eligibility by BMI.
Weight Loss Timeline Calculator — Calculate how long it will take to reach your goal weight with a week-by-week projection. Accounts for adaptive thermogenesis and slowing metabolism.
Weight Plateau Breaker Calculator — Break through a weight loss plateau by recalculating your TDEE at your new lower weight. Get personalized deficit adjustments, refeed, and diet break recommendations.
Weight Regain Predictor Calculator — Predict the likelihood of weight regain based on your weight loss method, maintenance strategy, and lifestyle factors. Research-backed estimates for 1-5 year outcomes.
Yo-Yo Dieting Cost Calculator — Calculate the financial and metabolic cost of repeated diet cycles. See how yo-yo dieting impacts your wallet, metabolism, and long-term weight outcomes.