A waist to height ratio chart gives you one simple rule: keep your waist to less than half your height. Divide your waist measurement by your height, using the same unit for both, and a result from 0.40 to 0.49 falls in the healthy range, 0.50 to 0.59 means increased risk, and 0.60 or higher means the highest risk. At 5’4″ that puts the half-height line at 32 inches, and at 5’10” it sits at 35 inches. This guide gives you the bands, a waist size chart for every height from 4’10” to 6’4″, worked examples, and the cases where the ratio should not be used.
The ratio matters because it picks up belly fat that a scale cannot. Harvard Health, summarizing a 2021 American Heart Association statement, says heart disease risk can rise with a larger waistline even when body weight is in the normal range, and it gives the same target of a waist under one-half of your height, even if your BMI is normal.
Jump to: Ratio Chart | Waist Size by Height | How to Measure | vs. BMI | Age, Sex, and Ethnicity | Who Should Not Use It | How to Lower It | FAQ
Waist to Height Ratio Chart
The British Heart Foundation lists the bands below and cites guidance from the National Institute for Health and Care Excellence (NICE). The ranges are one set for adults, not separate numbers for men and women.
| Waist-to-height ratio | What it means for adults |
|---|---|
| 0.40 to 0.49 | Healthy range |
| 0.50 to 0.59 | Increased risk of health problems |
| 0.60 or higher | Highest risk of health problems |
The British Heart Foundation adds that the ratio is recommended for adults with a BMI below 35, and that if your BMI is 35 or above, or you cannot measure your waist accurately, you should speak to a healthcare professional. NICE also says the same classification applies to all ethnicities and sexes. The next section turns the bands into waist sizes you can compare with a tape measure.
Healthy Waist Size by Height
Because the ratio depends on height, the same waist measurement can mean different things for different people. The chart below multiplies each height by 0.40, 0.50, and 0.60, so the first column is the low end of the healthy range, the middle column is the half-height line, and the last column is where the highest-risk band begins. Waist sizes are in inches with centimeters in brackets.
| Height | Waist at 0.40 | Waist at 0.50 (half your height) | Waist at 0.60 |
|---|---|---|---|
| 4’10” (147 cm) | 23.2 in (59 cm) | 29.0 in (74 cm) | 34.8 in (88 cm) |
| 4’11” (150 cm) | 23.6 in (60 cm) | 29.5 in (75 cm) | 35.4 in (90 cm) |
| 5’0″ (152 cm) | 24.0 in (61 cm) | 30.0 in (76 cm) | 36.0 in (91 cm) |
| 5’1″ (155 cm) | 24.4 in (62 cm) | 30.5 in (77 cm) | 36.6 in (93 cm) |
| 5’2″ (157 cm) | 24.8 in (63 cm) | 31.0 in (79 cm) | 37.2 in (94 cm) |
| 5’3″ (160 cm) | 25.2 in (64 cm) | 31.5 in (80 cm) | 37.8 in (96 cm) |
| 5’4″ (163 cm) | 25.6 in (65 cm) | 32.0 in (81 cm) | 38.4 in (98 cm) |
| 5’5″ (165 cm) | 26.0 in (66 cm) | 32.5 in (83 cm) | 39.0 in (99 cm) |
| 5’6″ (168 cm) | 26.4 in (67 cm) | 33.0 in (84 cm) | 39.6 in (101 cm) |
| 5’7″ (170 cm) | 26.8 in (68 cm) | 33.5 in (85 cm) | 40.2 in (102 cm) |
| 5’8″ (173 cm) | 27.2 in (69 cm) | 34.0 in (86 cm) | 40.8 in (104 cm) |
| 5’9″ (175 cm) | 27.6 in (70 cm) | 34.5 in (88 cm) | 41.4 in (105 cm) |
| 5’10” (178 cm) | 28.0 in (71 cm) | 35.0 in (89 cm) | 42.0 in (107 cm) |
| 5’11” (180 cm) | 28.4 in (72 cm) | 35.5 in (90 cm) | 42.6 in (108 cm) |
| 6’0″ (183 cm) | 28.8 in (73 cm) | 36.0 in (91 cm) | 43.2 in (110 cm) |
| 6’1″ (185 cm) | 29.2 in (74 cm) | 36.5 in (93 cm) | 43.8 in (111 cm) |
| 6’2″ (188 cm) | 29.6 in (75 cm) | 37.0 in (94 cm) | 44.4 in (113 cm) |
| 6’3″ (190 cm) | 30.0 in (76 cm) | 37.5 in (95 cm) | 45.0 in (114 cm) |
| 6’4″ (193 cm) | 30.4 in (77 cm) | 38.0 in (97 cm) | 45.6 in (116 cm) |
The middle column is your practical limit: staying below it keeps you under 0.50. It is not the same as the older single waist cutoffs. The National Heart, Lung, and Blood Institute flags a waist above 40 inches for men and above 35 inches for women, but half of your height only reaches 35 inches at 5’10”. Anyone shorter than that crosses the half-height line before reaching 35 inches, and half of your height stays below 40 inches until you are 6’8″. For shorter adults the ratio is the stricter test, so it can flag risk earlier than a fixed waist number. The normal waist-to-hip ratio chart covers the fixed cutoffs and how the two methods fit together.
How to Measure Your Waist to Height Ratio
- Measure your height without shoes, standing straight against a wall.
- Find your waist. The British Heart Foundation says to wrap a tape measure around your belly at the halfway point between the bottom of your ribs and the top of your hips.
- Pull the tape snug but not tight enough to dig into your skin, then breathe out normally and read the number.
- Use the same unit for both measurements, either inches or centimeters.
- Divide your waist by your height and round to two decimals.
- Find your band in the chart above.
Measuring methods vary. Harvard Health describes placing the tape just above the upper border of the hipbone, which is a different landmark from the ribs-to-hips midpoint. Pick one method and use it every time, because a consistent habit tells you more about your trend than a single reading. The examples below show the calculation.
| Height | Waist | Calculation | Band |
|---|---|---|---|
| 5’4″ (64 in) | 28 in | 28 / 64 = 0.44 | Healthy range |
| 5’4″ (64 in) | 33 in | 33 / 64 = 0.52 | Increased risk |
| 5’4″ (64 in) | 40 in | 40 / 64 = 0.62 | Highest risk |
| 5’10” (70 in) | 32 in | 32 / 70 = 0.46 | Healthy range |
| 5’10” (70 in) | 37 in | 37 / 70 = 0.53 | Increased risk |
| 5’10” (70 in) | 43 in | 43 / 70 = 0.61 | Highest risk |
Waist to Height Ratio vs. BMI
BMI uses only height and weight, so it cannot show where fat sits. NICE says the waist-to-height ratio offers a truer estimate of central adiposity, which means fat around the middle, and recommends using it alongside BMI for adults with a BMI under 35. NICE adds that the ratio can also help in adults with high muscle mass, for whom BMI may be less accurate, and that it adds little above a BMI of 35 because those adults are always likely to have a high ratio. The normal BMI chart by age and sex shows what BMI can and cannot tell you.
The research backs this up. A meta-analysis in Diabetes, Metabolic Syndrome and Obesity pooled 34 studies with 512,809 participants. It found that the waist-to-height ratio was a stronger predictor than BMI for diabetes and metabolic syndrome in cross-sectional studies, and BMI was not better than the ratio for any outcome. The authors also note that there was substantial variation between studies.
The same paper raises a caution about the 0.5 rule. The median cutoff that best predicted diabetes was 0.51 in Asian populations and 0.56 in non-Asian populations, and the authors argued that a single 0.5 cutoff is not justified and that more evidence is needed. In other words, 0.5 is a useful screening line, not a diagnosis. A ratio above it is a reason to look at the rest of your health picture, such as the ideal weight chart by height and age and your blood sugar and blood pressure numbers.
Another Harvard Health article on a study in the BMJ reports that central-fat measures, including the waist-to-height ratio, were associated with a higher risk of death, while larger hip and thigh circumference was associated with a lower risk. That is one more reason to track the waist rather than only the weight. The normal body fat percentage by age guide shows the third piece, how much of your weight is fat.
Does the Ratio Change by Age, Sex, or Ethnicity?
For adults, NICE uses one boundary of 0.5 for everyone, and it says the classification is the same for all ethnicities and sexes. The numbers do not shift by decade the way body fat percentage does. Age still matters indirectly, because belly fat tends to increase after menopause and muscle declines with age, so the ratio is worth checking more often in midlife and later. If menopause is part of your story, the menopausal belly fat diet and grocery list covers food choices for that stage.
For children and young people aged 5 and over, NICE says the ratio can be used as an indicator of central adiposity, with the same 0.5 boundary, but the evidence is less established than for adults. Self-measurement in children needs more research, so a parent or doctor should lead. For ethnicity, the meta-analysis above suggests the best cutoff may differ between groups, so ask your doctor how to read a ratio close to 0.5.
Who Should Not Use the Ratio
The NHS waist-to-height calculator page lists situations where it should not be used, and the list is a useful guide to the limits:
- Children under 5
- Anyone who is pregnant
- Anyone who has, or suspects they have, an eating disorder
- Anyone with a growth disorder or another condition that affects height
- Adults with a BMI over 35
The NHS also says the calculator should not be used to diagnose any condition and that anyone aged 17 or under should use it with a parent or carer. NICE adds that waist measurement should be done in a sensitive manner and with care, particularly for people with conditions such as eating disorders. If measuring your waist raises anxiety or leads to unhealthy eating habits, skip it and talk to your doctor. The bands also start at 0.40 in the guidance above, so a result below that has no official verdict here. If your ratio is low and you lost weight without trying, mention it to your doctor.
How to Lower Your Waist to Height Ratio
Your height will not change, so lowering the ratio means shrinking your waist. Cleveland Clinic lists a waist that is more than half your height among the warning signs of too much visceral fat, the deep belly fat that surrounds your organs. Harvard Health describes regular physical activity and reducing simple sugars as the best ways to lose belly fat. These steps put that into practice.
- Move most days. A routine from the best exercises for belly fat guide covers walking, strength work, and what to expect.
- Cut simple sugars and sugary drinks and build meals around vegetables, whole grains, and protein. A high-protein foods list makes it easier to protect muscle while your waist shrinks.
- Watch for insulin resistance. A larger waist often goes with insulin resistance, and the signs of insulin resistance guide lists what else to look for.
- Manage stress and sleep. How chronic stress and cortisol affect weight gain explains why belly fat responds to both.
- Plan meals for the whole picture. The metabolic syndrome diet grocery list is built around a large waist, blood pressure, and blood sugar together.
- Set a pace you can keep. Realistic weight loss goals help you avoid crash plans, and non-scale victories such as a smaller waist often show up before the scale moves.
Frequently Asked Questions About Waist to Height Ratio
What is a good waist to height ratio?
A ratio from 0.40 to 0.49 is the healthy range, which means your waist is less than half your height. A ratio of 0.50 to 0.59 means increased risk of health problems, and 0.60 or higher is the highest-risk band.
Is a waist to height ratio of 0.5 bad?
It is the point where the guidance changes from healthy to increased risk. It is a screening line, not a diagnosis. A ratio at or just above 0.50 is a signal to check your blood pressure, blood sugar, and cholesterol and to work on your waist, and the research suggests the best cutoff may be a little higher in some groups.
What waist size is half your height?
Divide your height by two. At 5’4″ (64 inches) it is 32 inches, at 5’7″ (67 inches) it is 33.5 inches, and at 5’10” (70 inches) it is 35 inches. The chart above lists every height from 4’10” to 6’4″.
Is waist to height ratio better than BMI?
It answers a different question. BMI shows weight for height, and the ratio shows how much of that weight sits around your middle. A meta-analysis of 34 studies found that BMI was not superior to the ratio for any outcome, and NICE recommends using the ratio alongside BMI for adults with a BMI under 35.
Is the ratio the same for men and women?
Yes. NICE says the classification is the same for all ethnicities and sexes, so the 0.5 boundary applies to both. Fixed waist cutoffs in inches do differ for men and women, which is why the waist-to-hip ratio chart lists them separately.
Can you have a normal BMI and a high waist to height ratio?
Yes. Harvard Health says heart disease risk can rise with a larger waistline even when body weight is in the normal range, which is why the AHA statement recommends keeping your waist under half your height even if your BMI is normal.
The Bottom Line
The rule is simple enough to remember: keep your waist under half your height. A ratio from 0.40 to 0.49 is healthy, 0.50 to 0.59 means increased risk, and 0.60 or higher is the highest-risk band. Use the chart to find your waist limit, measure the same way each time, and treat the result as a screening tool that works best next to your BMI, blood pressure, and blood sugar. If your ratio is 0.50 or more, steady movement, less sugar, enough sleep, and your doctor’s advice will do more than any single number.
This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Please consult your doctor to interpret your measurements and overall health risk.
