ReachWeight

ReachWeight - Weight Goal Calculator

Calculate when you will reach your target weight with safe, moderate, and aggressive scenarios, calorie targets, BMI, and a weekly forecast.

Weight Goal Calculator: Get a Realistic Timeline to Your Target Weight

ReachWeight is a free, science-based weight goal calculator that helps you understand exactly when you can reach your target weight. Unlike simple calculators that use the outdated "3500 calories = 1 pound" rule, ReachWeight accounts for metabolic adaptation, BMR, TDEE, BMI, and three realistic scenarios: Safe, Moderate, and Aggressive.

How ReachWeight Calculates Your Weight Goal Timeline

  1. Enter your current weight, target weight, age, height, gender, and activity level.
  2. The calculator estimates your Basal Metabolic Rate (BMR) using the Mifflin-St Jeor formula.
  3. It calculates your Total Daily Energy Expenditure (TDEE) based on your activity.
  4. It compares your daily calorie intake with TDEE to determine your calorie balance.
  5. You receive a personalized weekly and monthly forecast with three different paces.

Safe and Realistic Weekly Weight Change Rates

ScenarioWeekly Weight ChangeMonthly ChangeRecommended ForRisk
Safe0.5 – 0.7 kg (1–1.5 lb)2–3 kg (4–6.6 lb)Long-term sustainable progressLow
Moderate0.7 – 1 kg (1.5–2.2 lb)3–4 kg (6.6–8.8 lb)Most people with good adherenceMedium
Aggressive1+ kg (2.2+ lb)4+ kg (8.8+ lb)Short-term goalsHigh

Why ReachWeight is Better Than Other Calculators

  • Accounts for metabolic adaptation — your calorie burn decreases as you lose weight
  • Supports both weight loss and weight gain modes
  • Combines BMR, TDEE, BMI, and calorie balance in one tool
  • Provides weekly and monthly forecasts with realistic timelines
  • Completely free, no registration, privacy-friendly

Common search questions

How do I calculate when I will reach my goal weight?

Enter your current weight, target weight, calories, and activity level. The calculator estimates the weekly pace and shows an approximate goal date.

Can this calculate both losing weight and gaining weight?

Yes. You can switch between weight loss and weight gain, then compare safe, moderate, and aggressive scenarios.

Is the weight forecast medical advice?

No. It is an informational estimate based on calorie balance formulas. For medical decisions, consult a doctor or dietitian.

Start Your Journey Today

Use the calculator above to get your personalized weight goal timeline. Remember: consistency beats perfection.