BMI Calculator and Chart: Check Your BMI by Height and Weight

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Disclaimer: This calculator is for informational purposes only and is not a substitute for professional medical advice. Always consult a healthcare provider for a complete health assessment.

This BMI calculator page gives you the interactive tool above and the complete height by weight charts as readable text below, for adults. The charts work on any screen because they are real text, not images locked inside a picture.

BMI is a screening number, not a diagnosis. This BMI calculator guide treats it that way: the formula in full, the charts in full, and an honest limitations section that tells you when to use a different measure instead.

How to Use This BMI Calculator

Using this BMI calculator takes three steps.

Choose your units. The BMI calculator accepts metric (cm and kg) and imperial (feet, inches and pounds), and switches between the two.
Enter height and weight. Add age and sex as well: age lets the tool apply the older adult thresholds where they are relevant.
Read your category. Your result shows your BMI, your category on the scale, and the healthy weight range for your height.

What Is BMI?

Body mass index is a ratio of weight to height, created as a population screening tool and adopted by the World Health Organization. It correlates with body fat across large populations, which is why health systems use it for screening.

For an individual, it is a first look, not a verdict. No BMI calculator can see whether weight is muscle, fat, bone or water, and the limitations section at the end of this page covers the cases where that matters.

BMI Formula: Metric and Imperial

Both formulas are printed as text, so you can check any result this BMI calculator gives you by hand.

Metric: BMI = weight (kg) divided by height (m) squared.

Worked example: a person of 70 kg at 1.75 m has a BMI of 70 / (1.75 x 1.75) = 22.9, inside the healthy band.

Imperial: BMI = 703 x weight (lb) divided by height (in) squared.

Worked example: a person of 160 lb at 5 ft 10 in (70 in) has a BMI of 703 x 160 / (70 x 70) = 22.96, which rounds to 23. The healthy weight range at that height is about 129 to 174 lb.

Small differences between sites come from rounding and from whether a tool converts to metric first. A difference of 0.1 or 0.2 in the result changes nothing about your category in almost every case.

BMI Categories for Adults

The WHO scale has eight bands, and this BMI calculator page reports all eight. Most tools print only four, which hides the difference between mild and severe thinness at the bottom of the scale.

BMI	Category
Below 16.0	Severe thinness
16.0 to 16.9	Moderate thinness
17.0 to 18.4	Mild thinness
18.5 to 24.9	Normal (healthy)
25.0 to 29.9	Overweight
30.0 to 34.9	Obesity class I
35.0 to 39.9	Obesity class II
40.0 and above	Obesity class III

The healthy band is 18.5 to 24.9 on every page of this site. If you have seen 18.5 to 25 printed elsewhere, that is rounding of the same boundary: overweight begins at 25.0. If your result sits near a boundary, check it with a morning weight before reading anything into the difference.

BMI Chart for Adults: Height by Weight

This is the full chart as text. Find your height row, run across to your weight, and the cell is your BMI. The pound chart comes first, then the kilogram version, and if you would rather not read a grid at all, the BMI calculator at the top of this page does the same lookup instantly.

BMI chart in pounds

Height / Weight (lb)	100	110	120	130	140	150	160	170	180	190	200	210	220	230	240	250	260	270	280	290	300
4 ft 10 in	21	23	25	27	29	31	33	36	38	40	42	44	46	48	50	52	54	56	59	61	63
4 ft 11 in	20	22	24	26	28	30	32	34	36	38	40	42	44	46	48	50	53	55	57	59	61
5 ft 0 in	20	21	23	25	27	29	31	33	35	37	39	41	43	45	47	49	51	53	55	57	59
5 ft 1 in	19	21	23	25	26	28	30	32	34	36	38	40	42	43	45	47	49	51	53	55	57
5 ft 2 in	18	20	22	24	26	27	29	31	33	35	37	38	40	42	44	46	48	49	51	53	55
5 ft 3 in	18	19	21	23	25	27	28	30	32	34	35	37	39	41	43	44	46	48	50	51	53
5 ft 4 in	17	19	21	22	24	26	27	29	31	33	34	36	38	39	41	43	45	46	48	50	51
5 ft 5 in	17	18	20	22	23	25	27	28	30	32	33	35	37	38	40	42	43	45	47	48	50
5 ft 6 in	16	18	19	21	23	24	26	27	29	31	32	34	36	37	39	40	42	44	45	47	48
5 ft 7 in	16	17	19	20	22	23	25	27	28	30	31	33	34	36	38	39	41	42	44	45	47
5 ft 8 in	15	17	18	20	21	23	24	26	27	29	30	32	33	35	36	38	40	41	43	44	46
5 ft 9 in	15	16	18	19	21	22	24	25	27	28	30	31	32	34	35	37	38	40	41	43	44
5 ft 10 in	14	16	17	19	20	22	23	24	26	27	29	30	32	33	34	36	37	39	40	42	43
5 ft 11 in	14	15	17	18	20	21	22	24	25	26	28	29	31	32	33	35	36	38	39	40	42
6 ft 0 in	14	15	16	18	19	20	22	23	24	26	27	28	30	31	33	34	35	37	38	39	41
6 ft 1 in	13	15	16	17	18	20	21	22	24	25	26	28	29	30	32	33	34	36	37	38	40
6 ft 2 in	13	14	15	17	18	19	21	22	23	24	26	27	28	30	31	32	33	35	36	37	39
6 ft 3 in	12	14	15	16	17	19	20	21	22	24	25	26	27	29	30	31	32	34	35	36	37
6 ft 4 in	12	13	15	16	17	18	19	21	22	23	24	26	27	28	29	30	32	33	34	35	37
6 ft 5 in	12	13	14	15	17	18	19	20	21	23	24	25	26	27	28	30	31	32	33	34	36
6 ft 6 in	12	13	14	15	16	17	18	20	21	22	23	24	25	27	28	29	30	31	32	34	35

BMI chart in kilograms

Height / Weight (kg)	45	50	55	60	65	70	75	80	85	90	95	100	105	110	115	120	125	130	135	140
4 ft 10 in (147 cm)	21	23	25	28	30	32	35	37	39	41	44	46	48	51	53	55	58	60	62	65
4 ft 11 in (150 cm)	20	22	24	27	29	31	33	36	38	40	42	45	47	49	51	53	56	58	60	62
5 ft 0 in (152 cm)	19	22	24	26	28	30	32	34	37	39	41	43	45	47	50	52	54	56	58	60
5 ft 1 in (155 cm)	19	21	23	25	27	29	31	33	35	37	40	42	44	46	48	50	52	54	56	58
5 ft 2 in (157 cm)	18	20	22	24	26	28	30	32	34	36	38	40	42	44	46	48	50	52	54	56
5 ft 3 in (160 cm)	18	20	21	23	25	27	29	31	33	35	37	39	41	43	45	47	49	51	53	55
5 ft 4 in (163 cm)	17	19	21	23	25	26	28	30	32	34	36	38	40	42	44	45	47	49	51	53
5 ft 5 in (165 cm)	17	18	20	22	24	26	28	29	31	33	35	37	39	40	42	44	46	48	50	51
5 ft 6 in (168 cm)	16	18	20	21	23	25	27	28	30	32	34	36	37	39	41	43	44	46	48	50
5 ft 7 in (170 cm)	16	17	19	21	22	24	26	28	29	31	33	35	36	38	40	41	43	45	47	48
5 ft 8 in (173 cm)	15	17	18	20	22	23	25	27	28	30	32	34	35	37	39	40	42	44	45	47
5 ft 9 in (175 cm)	15	16	18	20	21	23	24	26	28	29	31	33	34	36	37	39	41	42	44	46
5 ft 10 in (178 cm)	14	16	17	19	21	22	24	25	27	28	30	32	33	35	36	38	40	41	43	44
5 ft 11 in (180 cm)	14	15	17	18	20	22	23	25	26	28	29	31	32	34	35	37	38	40	42	43
6 ft 0 in (183 cm)	13	15	16	18	19	21	22	24	25	27	28	30	31	33	34	36	37	39	40	42
6 ft 1 in (185 cm)	13	15	16	17	19	20	22	23	25	26	28	29	31	32	33	35	36	38	39	41
6 ft 2 in (188 cm)	13	14	16	17	18	20	21	23	24	25	27	28	30	31	33	34	35	37	38	40
6 ft 3 in (191 cm)	12	14	15	17	18	19	21	22	23	25	26	28	29	30	32	33	34	36	37	39
6 ft 4 in (193 cm)	12	13	15	16	17	19	20	21	23	24	25	27	28	30	31	32	34	35	36	38
6 ft 5 in (196 cm)	12	13	14	16	17	18	20	21	22	24	25	26	27	29	30	31	33	34	35	37
6 ft 6 in (198 cm)	11	13	14	15	17	18	19	20	22	23	24	25	27	28	29	31	32	33	34	36

Read any cell against the category table above: 18.5 to 24.9 is the healthy band this BMI calculator uses. The grids cover the full weight range in one table, with no gap bands.

Healthy Weight Range by Height

If you only want the healthy band for your height, this compact table is the shortcut. Every row is the weight range between BMI 18.5 and 24.9 at that height, the same range this BMI calculator prints with each result.

Height	Height (cm)	Healthy weight range (kg)	Healthy weight range (lb)
4 ft 10 in	147	40.2 to 54.0	89 to 119
4 ft 11 in	150	41.5 to 55.9	92 to 123
5 ft 0 in	152	43.0 to 57.8	95 to 127
5 ft 1 in	155	44.4 to 59.8	98 to 132
5 ft 2 in	157	45.9 to 61.8	101 to 136
5 ft 3 in	160	47.4 to 63.8	104 to 141
5 ft 4 in	163	48.9 to 65.8	108 to 145
5 ft 5 in	165	50.4 to 67.9	111 to 150
5 ft 6 in	168	52.0 to 70.0	115 to 154
5 ft 7 in	170	53.6 to 72.1	118 to 159
5 ft 8 in	173	55.2 to 74.3	122 to 164
5 ft 9 in	175	56.8 to 76.5	125 to 169
5 ft 10 in	178	58.5 to 78.7	129 to 174
5 ft 11 in	180	60.2 to 81.0	133 to 179
6 ft 0 in	183	61.9 to 83.3	136 to 184
6 ft 1 in	185	63.6 to 85.6	140 to 189
6 ft 2 in	188	65.4 to 88.0	144 to 194
6 ft 3 in	191	67.1 to 90.4	148 to 199
6 ft 4 in	193	68.9 to 92.8	152 to 205
6 ft 5 in	196	70.8 to 95.2	156 to 210
6 ft 6 in	198	72.6 to 97.7	160 to 215

The same ranges, organised as a calculator with frame size and formula comparisons, live on the ideal body weight calculator page.

How Much Weight Changes Your BMI by One Point

One BMI point costs more weight the taller you are, because the point scales with height squared. This table is the quick reference for goal setting: at 5 ft 7 in, one point is about 6.4 lb (2.9 kg).

Height	Weight per BMI point (lb)	Weight per BMI point (kg)
4 ft 10 in	4.8	2.2
4 ft 11 in	5.0	2.2
5 ft 0 in	5.1	2.3
5 ft 1 in	5.3	2.4
5 ft 2 in	5.5	2.5
5 ft 3 in	5.6	2.6
5 ft 4 in	5.8	2.6
5 ft 5 in	6.0	2.7
5 ft 6 in	6.2	2.8
5 ft 7 in	6.4	2.9
5 ft 8 in	6.6	3.0
5 ft 9 in	6.8	3.1
5 ft 10 in	7.0	3.2
5 ft 11 in	7.2	3.3
6 ft 0 in	7.4	3.3
6 ft 1 in	7.6	3.4
6 ft 2 in	7.8	3.5
6 ft 3 in	8.0	3.6
6 ft 4 in	8.2	3.7
6 ft 5 in	8.4	3.8
6 ft 6 in	8.7	3.9

BMI for Children and Teens: Percentiles Explained

Children are never judged on the adult bands. A child’s BMI is converted into a percentile for their exact age and sex, because body fat changes as children grow and changes differently for boys and girls. The reference below is what a paediatrician reads a child’s number against; a single reading matters less than the trend across visits, which is why children’s results belong with their doctor, not with a one-off number.

BMI percentile (age and sex)	Category
Below the 5th percentile	Underweight
5th to under the 85th percentile	Healthy weight
85th to under the 95th percentile	Overweight
95th percentile and above	Obesity

These are the current CDC labels. Older charts called the 85th to 95th band “at risk of overweight” and the top band “overweight”; both terms are retired, and the top band is obesity.

BMI Cutoffs for Asian Populations

The standard bands were built largely on European population data, and risk does not wait for a BMI of 25 in everyone. People of Asian origin tend to develop type 2 diabetes and cardiovascular risk at a lower BMI.

The WHO expert consultation set additional public health action points for Asian populations: 23 for increased risk and 27.5 for high risk. The BMI calculator above asks for ethnicity for exactly this reason, and applies these adjusted thresholds when Asian is selected. This section is the reference the whole site follows: where the adjusted points apply, categories are read against 23 and 27.5 as well as against 25 and 30.

This is also the correct direction of the adjustment, stated plainly because it is often printed backwards: the thresholds move down, not up. If you are unsure whether the adjusted points apply to you, run the calculator both ways and discuss the gap with your doctor.

BMI Prime and Ponderal Index

Two companion measures are explained in this BMI calculator guide, and almost no competing BMI calculator offers either.

BMI Prime is your BMI divided by 25, the top of the healthy band. A Prime of 1.08 means you sit 8 percent above that boundary. Prime below 0.74 is the underweight range, 0.74 to 1.00 is healthy, 1.00 to 1.20 is overweight, above 1.20 is the obesity range, and above 1.60 is obesity class III. Work it out from the BMI the calculator gives you: divide your result by 25.

Ponderal Index divides weight by height cubed instead of height squared (kg / m cubed). Most adults fall between about 11 and 15. Because it scales differently, the Ponderal Index behaves better at the extremes of height, where BMI overstates fatness in very tall people and understates it in very short people.

Why BMI Matters: Health Risks Above and Below the Range

BMI survives as a screening tool because the risks at both ends of the scale are real and well documented.

Risks associated with a high BMI: type 2 diabetes, heart disease and stroke, high blood pressure, sleep apnea, osteoarthritis, fatty liver disease and several cancers. Once you know your category, a calorie calculator is the practical next step toward changing it.

Risks associated with a low BMI: weakened immune function, vitamin and mineral deficiencies, osteoporosis, anaemia, and disrupted menstrual cycles and fertility from low energy availability. A low reading deserves the same seriousness as a high one, so recheck after a 5 to 10 percent weight change in either direction and watch the category, not just the number.

Limitations of BMI

Muscle. BMI cannot separate muscle from fat, so trained and muscular people read high. If that is you, treat the category as a false alarm until a composition measure confirms it.

Fat distribution and normal weight obesity. A normal BMI can still hide too much fat, especially around the waist. A waist under half your height is the simple check that catches what BMI misses.

Age, sex and ethnicity. The bands are adult population averages: older adults often sit healthiest slightly higher, and the Asian action points in the section above shift the thresholds down. No single band fits every body exactly, and if you are over 60, use your current measured height rather than the height you remember.

The honest next step for any of these cases is composition. Our body fat calculator estimates fat percentage directly with tape measure and formula methods, and pairs with this page in the cluster hub.

Reference: the CDC’s adult BMI categories.

Frequently Asked Questions

The WHO healthy band this BMI calculator uses is 18.5 to 24.9. Below 18.5 is underweight, 25.0 to 29.9 is overweight, and 30.0 and above is obesity, split into three classes on the full scale this page prints.

Multiply your weight in pounds by 703, then divide by your height in inches squared. At 160 lb and 70 in, that is 703 x 160 / 4,900 = 22.96, a BMI of about 23. The formula section on this page shows the full arithmetic.

Probably less than the number suggests. BMI counts muscle as weight, so muscular people read a band too high. Check your waist against half your height and get a body fat estimate before changing anything.

Yes, in practice. The WHO action points for Asian populations are 23 for increased risk and 27.5 for high risk, because diabetes and cardiovascular risk rise at lower BMI. The cutoffs section on this page is the site’s full explanation.

Between the 5th and the 85th percentile for the child’s age and sex. The 85th to under 95th percentile is overweight and the 95th and above is obesity, under current CDC labels.

Your BMI divided by 25, the top of the healthy band. A Prime of 1.0 sits exactly on the boundary, 1.2 marks the start of the obesity range, and the BMI Prime section on this page gives the full scale.

It depends on your height: about 6.4 lb at 5 ft 7 in, and more as height rises, because a point scales with height squared. The one point table in the chart section gives your exact figure.

Yes. It is sometimes called normal weight obesity or skinny fat: a healthy BMI with high body fat and low muscle. A waist measurement and a body fat estimate reveal what BMI hides.

It works as a screen, but the lowest risk band appears to sit slightly higher after 65, roughly BMI 24 to 29 in several cohort studies. Height loss also inflates readings, so older results deserve a careful read rather than a quick reaction.

Rounding, and method: some tools convert your entries to metric first, others apply the 703 imperial constant directly. Differences of 0.1 or 0.2 are normal and almost never change your category. This BMI calculator page prints both formulas so you can verify the arithmetic yourself.

In a Nutshell

This BMI calculator page now does the whole job in one place: both formulas as text with worked examples, the full eight band category scale, complete height by weight charts in pounds and kilograms, corrected CDC labels for children, the Asian cutoff section, and BMI Prime and Ponderal Index for depth.

Use the number as a screen, the chart as a reference, and the limitations as your judgement. Every calculator in the cluster is listed on the health tools and calculators hub.

Author: Sara Ali, nutritionist. This article is general information, not medical advice.

BMI Calculator

The Ultimate BMI Calculator

Advanced BMI & Health Calculator

Ready to Take the Next Step?

How to Use This BMI Calculator

What Is BMI?

BMI Formula: Metric and Imperial

BMI Categories for Adults

BMI Chart for Adults: Height by Weight

Healthy Weight Range by Height

How Much Weight Changes Your BMI by One Point

BMI for Children and Teens: Percentiles Explained

BMI Cutoffs for Asian Populations

BMI Prime and Ponderal Index

Why BMI Matters: Health Risks Above and Below the Range

Limitations of BMI

Frequently Asked Questions

In a Nutshell

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The Ultimate BMI Calculator

Advanced BMI & Health Calculator

Ready to Take the Next Step?

How to Use This BMI Calculator

What Is BMI?

BMI Formula: Metric and Imperial

BMI Categories for Adults

BMI Chart for Adults: Height by Weight

Healthy Weight Range by Height

How Much Weight Changes Your BMI by One Point

BMI for Children and Teens: Percentiles Explained

BMI Cutoffs for Asian Populations

BMI Prime and Ponderal Index

Why BMI Matters: Health Risks Above and Below the Range

Limitations of BMI

Frequently Asked Questions

In a Nutshell

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