Quick answer
Ideal Weight Calculator: what it calculates
Ideal Weight Calculator calculates bmi-based weight range from height feet, height inches and current weight. The core method is Weight = BMI x height in inches^2 / 703.
Health Calculators
Ideal Weight Calculator
Use this ideal weight calculator to estimate a BMI-based adult weight range for your height and compare it with current BMI.
Reviewed May 25, 2026EstimateFormula shown
ResultBMI-based weight range
InputsHeight feet, Height inches, Current weight
FormulaBMI weight range formula
Live calculator
Ideal weight range
BMI-based weight range129 - 174 lb
Approximate adult BMI 18.5 to 24.9 range for this height.
Range midpoint151 lb
A simple midpoint for comparison, not a medical target.
Current BMI25.8
Calculated from 70 inches and current weight.
Formula
BMI weight range formula
Weight = BMI x height in inches^2 / 703This calculator uses adult BMI 18.5 to 24.9 as a broad screening range, not a personalized medical target.
How to use
Steps
- Enter height in feet and inches.
- Optionally enter current weight for a BMI comparison.
- Review the BMI-based adult weight range.
- Use the result as a broad screening reference, not a diagnosis.
Example
Sample calculation
Height5 ft 10 in
BMI range18.5 - 24.9
Weight range129 - 173 lb
Calculator use
Best for
- Quick bmi-based weight range from height feet, height inches and current weight.
- Wellness, nutrition, pregnancy, or fitness planning when a rough estimate is enough.
- Scenario comparisons before changing calorie, macro, or body-measurement assumptions.
- Planning alongside professional medical or nutrition advice, not as a diagnosis.
Before relying on it
Check first
- Entering height feet, height inches and current weight from different time periods or scenarios.
- Treating a calculator result as medical advice or a diagnosis.
- Using stale body, activity, pregnancy, or nutrition inputs when your situation has changed.
- Ignoring context such as age, medication, training status, medical history, or professional guidance.
Details
What to know before using the result
These notes make the assumptions explicit, especially where the same search query can mean slightly different things.
Adult scopeAdults 20 and older
Adult BMI ranges are not interpreted the same way for children and teens, who use age and sex percentiles.
Estimate typeBMI-based range
The result is based on height and BMI only. It does not account for muscle mass, pregnancy, medical history, or body composition.
Personal targetNot one exact weight
A healthy weight is usually a range. A qualified clinician can help interpret it in context.
Source notes
References used for this calculator
Benchmarks
How to read the result
The calculator is a decision aid, not a fixed rule. Use the output to compare scenarios and document your assumptions.
18.5 - 24.9 BMIAdult healthy range
Common adult screening range used for the weight estimate.
25 - 29.9 BMIOverweight range
BMI can be misleading when body composition is unusual.
30+ BMIObesity range
Worth reviewing with health context rather than using BMI alone.
Calculator accuracy
Methodology and assumptions
The formula, inputs, example, and limitations are shown so the result is checkable, not just a number in a box.
Formula
Weight = BMI x height in inches^2 / 703
Inputs used
Height feet, Height inches, Current weight
Limitations
Results are estimates for quick planning and should be checked before important financial, legal, tax, health, or business decisions.
Last reviewed
May 25, 2026
Cite this page
Toolkit Shelf. Ideal Weight Calculator. Retrieved May 25, 2026, from https://toolkitshelf.com/tools/ideal-weight-calculator
FAQ
Common questions
How is ideal weight calculated?
This calculator converts the adult BMI 18.5 to 24.9 range into a weight range for the height entered.
Is this my exact ideal weight?
No. It is a BMI-based screening range, not a personalized target or medical diagnosis.
Why is the result a range?
BMI categories cover ranges, and healthy weight can vary with body composition, age, pregnancy, and medical context.