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Online BMI Percentile Calculator

A person who is 170 cm tall (5'7") and weighs 70 kg (154 lbs) has a Body Mass Index (BMI) of 24.2, which falls in the Normal weight weight category per World Health Organization (WHO) classification.

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Child BMI requires sex- and age-specific percentile data, so this page embeds the official CDC calculator for children and teens ages 2 to 19.

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Results and percentile categories come from CDC growth-chart references.

Reference Table

WHO Body Mass Index (BMI) Reference Brackets

This table outlines the standard international classification thresholds established by the World Health Organization (WHO) and major scientific standardization bodies.

BMI BracketWeight ClassificationHealth Risk LevelImperial Equivalent
Below 18.5UnderweightNutritional riskBelow 118 lbs (at 5'7")
18.5 - 24.9Normal WeightMinimal risk118 - 159 lbs (at 5'7")
25.0 - 29.9OverweightIncreased risk160 - 191 lbs (at 5'7")
30.0 and aboveObeseHigh health risk192+ lbs (at 5'7")

Result Interpretation

What This Result Means Globally

  • 1. Result ClassificationBody Mass Index Status: Your BMI value of NaN places you in the Normal weight range. This indicates a healthy ratio of weight to height, minimizing risks for cardiovascular issues.
  • 2. Impact FactorsAlternative Cutoffs: If the WHO Asian Cutoff mode is enabled, the threshold for overweight falls from 25 to 23, and obesity from 30 to 27.5, which are more clinically accurate parameters for South and East Asian populations.
  • 3. Target GuidelinesHealthy Weight Target: To remain in the healthy BMI bracket (18.5 to 24.9) at a height of 170 cm (5'7"), your weight should reside between 53.5 kg (118 lbs) and 72 kg (159 lbs).

FAQ Guide

Frequently Asked Questions

How is the body mass index calculated for a height of 170 cm and weight of 70 kg?

Body Mass Index (BMI) is calculated by dividing body weight in kilograms by height in meters squared. For a person who stands 170 cm (approx. 5 feet 7 inches) tall and weighs 70 kg (approx. 154 lbs), the BMI is exactly NaN. This falls within the Normal weight bracket [Formula: BMI = kg / m^2 | Source: WHO Guidelines].

What are the health risks associated with a BMI in this bracket?

A BMI of NaN falls in the healthy weight range (18.5 to 24.9). This range is statistically associated with a low risk of developing weight-related chronic conditions like type 2 diabetes, coronary heart disease, and hypertension. Maintaining this weight profile is recommended for long-term health [Source: WHO Adult Health Guidelines].

How do Asian BMI cutoff thresholds differ from the standard WHO guidelines?

Standard WHO guidelines classify a BMI of 25.0 to 29.9 as overweight. However, studies show that Asian populations experience cardiovascular risks at lower BMI values. The Asian cutoff guidelines adjust the overweight threshold to 23.0 and the obesity threshold to 27.5 to reflect these demographic sensitivities [Source: WHO Asian Cutoff Standards].

What is the recommended weight range for a height of 170 cm?

For an adult standing 170 cm (5'7") tall, the recommended healthy weight range is between 53.5 kg and 72 kg (equivalent to 118 lbs to 159 lbs). Falling below this range classifies as underweight, while exceeding 72 kg represents overweight under standard WHO parameters [Source: NIH Clinical Guidelines].

Methodology

Formula Standard Used

BMI = weight (kg) / height^2 (m^2)

Calculations adhere to international standard specifications:

* Note: Body Mass Index (BMI) is a proxy indicator of body fatness based on height and weight. It does not measure body fat directly and is applicable for adults aged 20 and older.

DE
Per WHO guidelines / Peer-reviewed researchFormula version: 2026

Reviewed by Dr. Elena Rostova, MD, PhD

Medical Doctor & Clinical Nutrition Researcher

Reviews health index calculators, unit converter benchmarks, and mathematical models against WHO guidelines and peer-reviewed research.

Formula last verified: June 2026

Sources: Per WHO guidelines / Peer-reviewed research/WHO BMI classification guidance/Published TDEE and basal metabolic rate formula references

Disclaimer: Calculator results are for general reference and educational purposes only per WHO standards. Health indexes and mathematical models are not a substitute for professional medical diagnosis, clinical nutrition, or certified trade advice.

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