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Height Weight Age Calculator – Free Online Tool | Genial Things
FREE TOOL

Height WeightAge Calculator

Calculate Your Age, Height, Weight & BMI

Enter your date of birth, height, and weight to instantly calculate your age, BMI, healthy weight range, and full body measurement overview.

Age Calculator
BMI Calculator
Weight Range
100% Private
Metric & Imperial
100% FREE •No Signup Required •Works in Your Browser

Height Weight Age Calculator ✦

Calculate your age, BMI, and healthy weight range instantly.

Units
cm
kg
YOUR BMI
22.9
✓ Healthy Weight
Age: —
Height: —
Weight: —
Your Age
—
BMI Score
—
Category
—
BMI Scale
1518.5253040
Underweight
< 18.5
Healthy
18.5–24.9
Overweight
25–29.9
Obesity
≥ 30
⚖️
Estimated Healthy Weight Range
—
Based on BMI 18.5–24.9 for your height
BMI and healthy-weight ranges are general screening estimates and should not be considered a medical diagnosis. BMI does not directly measure body fat and may not accurately represent health status for every individual. Consult a healthcare professional for personalised advice.
100% FREE •No Signup Required •No Data Stored •Works in Your Browser
HOW IT WORKS

How to Use the Height Weight Age Calculator

Three simple steps to calculate your age, BMI, and healthy weight range in seconds.

1

Enter Your Date of Birth

Select your day, month, and year of birth. The calculator automatically computes your exact current age in years.

2

Enter Height & Weight

Input your height (cm or ft/in) and weight (kg or lb). Toggle between metric and imperial units to match your preference.

3

View Your Results

Instantly see your age, BMI score, BMI category, estimated healthy weight range, and a visual BMI gauge — all in one place.

WHY USE IT

Why Use Our Height Weight Age Calculator?

One tool replaces three separate calculators — faster, simpler, and more informative.

Instant Results

Calculate your age, BMI, and healthy weight range in seconds — no manual formulas, no complicated steps, no waiting.

Three Tools in One

Instead of switching between an age calculator, a BMI calculator, and a healthy weight tool, get all three in a single, simple interface.

Metric & Imperial

Enter measurements in centimetres and kilograms, or feet, inches, and pounds — the calculator handles both unit systems automatically.

100% Private & Secure

All calculations run entirely in your browser. No health data is ever sent to a server. Your measurements stay completely private.

REFERENCE

BMI Categories Explained

The standard BMI classification for adults is based on the World Health Organization scale.

BMI RangeCategoryInterpretation
Below 18.5UnderweightBelow the healthy weight range for height
18.5 – 24.9Healthy WeightWithin the recommended healthy BMI range
25.0 – 29.9OverweightAbove the healthy weight range for height
30.0 or higherObesitySignificantly above the healthy weight range

Important: BMI is a screening measurement, not a medical diagnosis. It does not directly measure body fat and may not accurately represent health status for every person. Children and teenagers use age- and sex-specific BMI references different from adult BMI categories.

FEATURES

Key Features

Everything you need to calculate and understand your body measurements in one free tool.

Free height weight age calculator
Automatic age calculation from date of birth
BMI calculation and category classification
Estimated healthy weight range by height
Visual BMI gauge with color coding
Metric and imperial units supported
Browser-based — no install, no signup
Mobile and desktop compatible
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FAQ

Frequently Asked Questions

Everything you need to know about the free Height Weight Age Calculator.

Is the Height Weight Age Calculator free?
Yes. The calculator is completely free to use with no hidden costs, no signup required, and no usage limits of any kind.
Does the calculator calculate BMI?
Yes. The calculator computes your Body Mass Index (BMI) using the standard formula: weight (kg) ÷ height² (m²). It then displays your BMI score, category, and a visual gauge.
Can I use feet, inches, and pounds?
Yes. Switch the unit toggle to Imperial to enter your height in feet and inches and your weight in pounds. The calculator automatically converts to metric for the BMI calculation.
Is my health data stored or shared?
No. All calculations happen entirely in your browser. No data is ever sent to any server. Your date of birth, height, weight, and BMI results remain completely private.
What is a healthy BMI?
For adults, a BMI between 18.5 and 24.9 is commonly classified as the healthy weight range. BMI is a screening tool and not a medical diagnosis — always consult a healthcare professional for personalised advice.
Can children use this calculator?
The age calculation works for anyone. However, adult BMI categories should not be applied to children and teenagers — their BMI is interpreted using age- and sex-specific growth references. This tool is designed for adults.

Know Your Numbers. Understand Your Measurements.

Calculate your age, height, weight, and BMI instantly — free, no signup required.

Calculate My Height & Weight
100% Free • No Signup • Works in Your Browser