⚖️ Ideal Weight Calculator
Find your estimated ideal and healthy weight range
Your Ideal Weight Result
Estimated values based on your height and gender
Your estimated ideal weight is calculated using several commonly used height-based formulas. The healthy range shown is based on a BMI range of approximately 18.5 to 24.9.
This tool provides two types of results:
- 1. Healthy Weight Range
An estimated healthy range for height based on a BMI of 18.5–24.9. - 2. Ideal Weight Estimate
An average of four established height-based formulas:
- Devine
- Robinson
- Miller
- Hamwi
Instead of just one arbitrary number, this gives the user a range and multiple estimates.
Ideal Weight Calculator: How to Use This Calculator
An ideal-weight calculator provides a rough reference based on height and, depending on the formula, sex or other assumptions. There is no single perfect weight that fits every person. Muscle mass, frame size, age, pregnancy, medical history and cultural or population differences all affect how a number should be interpreted.
Step-by-step instructions and example
Enter your height and any other details requested by the calculator, then review the range or formula estimates shown. For example, two adults of the same height can have different healthy body compositions because one may have more muscle or a different build. A calculator range is not a personal medical target and should not be treated as a deadline.
How to interpret the result
Read the number alongside the assumptions shown on this page. Check the units, the age range and any activity or goal setting before drawing conclusions. An estimate is most useful when it helps you ask better questions, plan a balanced routine or discuss your needs with a qualified professional. It should not be used to diagnose a disease, decide to stop medication or justify a very restrictive diet.
For practical use, focus on consistent habits: regular meals, a variety of foods, sleep, movement that suits your ability and enough time to notice patterns. If you choose to track progress, look at trends over several weeks rather than reacting to one day’s result. Water retention, digestion, stress, sleep and normal hormonal changes can all affect measurements.
Important limitations
Calculator equations are simplified models. They cannot account for every difference in body composition, genetics, medication, health status or daily routine. Results may be less reliable for children, teenagers, older adults, pregnancy or breastfeeding, competitive athletes and people with significant medical conditions. In those situations, seek advice tailored to your circumstances.
Frequently Asked Questions
Why do different formulas give different numbers?
They were developed from different datasets and assumptions, so their estimates can vary.
Is the lowest number the healthiest?
No. Lower weight is not automatically healthier, and under-eating can cause harm.
Can this tool assess a child?
No. Children and teenagers need growth charts and assessment appropriate to age and development.
What should I do if the result seems wrong?
Recheck each entry and the units first. If the result still seems inconsistent, do not force your routine to fit the number; use a trusted professional to review it.
Is this a medical diagnosis?
No. This page is for general education. It does not replace medical assessment or personalised advice from a registered dietitian or other qualified healthcare professional.