NACS TECH TECHNOLOGY SOLUTIONS
Free Online Calculator

Weight Calculator for ideal weight, BMI, and a healthy range.

Use this free calculator to estimate ideal body weight, see a healthy weight range, and check BMI. You can enter height in centimeters or feet and inches, which makes the tool easier for more users.

Calculate your result

Choose gender, enter your height, and optionally add your current weight. Feet and inches is selected by default, and you can switch to centimeters with a single click.

Gender
Height unit
Current weight unit

How this weight calculator works

The calculator uses the Devine ideal body weight formula for a target estimate and the standard BMI healthy range of 18.5 to 24.9 for a practical weight band. If you add current weight, it also shows your BMI category and whether your current weight sits below, within, or above the healthy range.

Good for quick everyday use

This page is useful for anyone who wants a fast estimate before setting fitness, nutrition, or weight management goals. It is simple enough for everyday visitors but still gives enough context to make the result meaningful.

Popular examples

Example 1

Male, 180 cm, current weight 78 kg

Example 2

Female, 5 ft 5 in, current weight 140 lb

Useful information about this weight calculator

Ideal body weight estimate

An ideal weight calculator is often used to get a target weight estimate based on height and gender. This gives a practical reference point when planning fitness or weight management goals.

Healthy BMI range

A healthy weight range calculator helps users understand the approximate minimum and maximum body weight associated with a standard BMI range for their height.

Quick BMI feedback

When current weight is entered, the page also returns BMI and a category label. This helps people compare their present body weight to the estimated healthy band.

Formula summary

For men, the Devine formula starts at 50 kg for 5 feet of height and adds 2.3 kg for each inch above 5 feet. For women, it starts at 45.5 kg and also adds 2.3 kg for each inch above 5 feet.

Frequently asked questions

Is this weight calculator medically exact?

No. It is an educational estimate. The best target weight depends on muscle mass, age, body composition, medical history, and guidance from a health professional.

What formula does this page use?

This calculator uses the Devine formula for ideal body weight and the BMI healthy range to estimate a suitable weight band. You can enter height either in centimeters or in feet and inches.

Can I use it as a BMI calculator too?

Yes. If you provide current weight in kilograms, the result also includes BMI and its category.

Why is there a tools section in the menu?

The tools menu will continue to grow with more useful calculators and small utility pages, so visitors can find helpful tools in one place.