Body Metrics & Fitness5 options compared

BMI Weight Loss Calculator

Calculates an individual’s Body Mass Index (BMI) using current weight and height measurements. The tool provides not only the resulting BMI category but also a recommended healthy weight range tailored to the user's specific height. Furthermore, it allows users to estimate the necessary weight loss required to achieve a target BMI, typically aiming for a healthier range below 25. Calculations are...

BMI calculators
Editors’ Top PickBased on community votes
Other OptionsRanked by votes
  1. Screenshot of Inch Calculator
    02
    Inch Calculator
    inchcalculator.com

    This calculator estimates ideal body weight and includes healthy BMI range context for your height. It helps users co...

    Open siteView details
  2. Screenshot of CalcTrail
    03
    CalcTrail
    calctrail.com

    Its BMI calculator supports target-weight planning, including reverse BMI use for desired BMI goals. You can estimate...

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  3. Screenshot of Calculator.net
    04
    Calculator.net
    calculator.net

    Its BMI Calculator is free to use and provides BMI category plus a healthy weight range for your height. You can use ...

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  4. Screenshot of Omni Calculator
    05
    Omni Calculator
    omnicalculator.com

    Our BMI weight loss calculator helps you to calculate how much weight you need to lose to reach your desired BMI.

    Open siteView details

Side by side

BMI Weight Loss Calculator options compared

ToolBest forStrengthsLimitations
FreeSmartCalculator
freesmartcalculator.com
Quick target weight and exact weight change
  • Returns target weight plus exact weight change needed
  • Built-in healthy BMI presets
  • Works immediately in browser
  • Placeholder page during migration, interactive logic not yet ported
Inch Calculator
inchcalculator.com
Compare multiple ideal weight formulas
  • Uses Robinson, Miller, Devine, and Hamwi formulas
  • Shows healthy BMI range context for height
  • No paid requirement to use
  • Fewer unit options compared to dedicated BMI calculators
CalcTrail
calctrail.com
Track BMI progress over time with goal setting
  • Supports target-weight planning and reverse BMI mode
  • Add waist context for extra risk screening
  • Save entries to build BMI history chart over time
  • Requires adding optional inputs like age and gender to access all features
Calculator.net
calculator.net
Standard BMI with healthy weight range output
  • Free to use, provides BMI category and healthy weight range
  • Supports US and metric units, works instantly in-browser
  • Includes Ponderal Index calculation
  • Basic feature set, no progress tracking or goal planning
Omni Calculator
omnicalculator.com
Concrete weight loss numerical objective
  • Calculates weight adjustments necessary to reach desired BMI
  • Uses established health formulas based on standard medical guidelines
  • Allows comparison of BMI with peers
  • May include peer comparison features that some users prefer to avoid

Buyer's guide

How to choose a bmi weight loss calculator

When picking a BMI weight loss calculator, first decide whether you need only a one-time BMI and target weight calculation or ongoing progress tracking. If you want a quick result with exact pounds or kilograms to lose, choose a tool that returns target weight and weight change directly. If you are comparing different weight formulas or want to see a healthy BMI range context for your height, look for a calculator that lists multiple ideal weight methods. Consider whether the tool supports both US customary and metric units if you work with different measurement systems, and check if optional inputs like age, gender, or waist circumference are required to access the features you need.

Questions

BMI Weight Loss Calculator FAQ

Can I use these BMI calculators with both pounds and kilograms?
Yes, all five tools support both US customary units (pounds, feet, inches) and metric units (kilograms, centimeters), so you can enter your measurements in whichever system you prefer without manual conversion.
Do these calculators tell me how much weight I need to lose to reach a healthy BMI?
Most of them do. FreeSmartCalculator, Inch Calculator, CalcTrail, and Calculator.net all provide a healthy weight range for your height and can estimate the weight change needed to reach a target BMI, typically aiming for a range below 25.
Is the BMI result the same across all these tools?
No, BMI values can vary slightly depending on the formula used and whether the tool includes additional factors like age, gender, or waist circumference. For a basic BMI number, the results will be similar, but target weight calculations may differ based on the underlying method.
Do I need to create an account to use these BMI calculators?
No sign-up is required for core use on any of the five tools. CalcTrail notes the calculator is free with no sign-up required for core use, and the other tools work immediately in the browser without account creation.
Which calculator is best if I am an athlete or very muscular?
Calculator.net includes a Ponderal Index in addition to BMI, which may provide extra context for body composition. However, all these tools note that BMI does not distinguish muscle from fat, so athletes should not rely on BMI alone and may want to consider additional body composition measurements.
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