Ideal Weight Calculator - User Guide
Ideal Weight Calculator is
an interactive body weight calculator based on a formula defined by
Dr. G.J. Hamwi.
The formula first appeared in a publication of the American Diabetes Association in 1964.
It defines a method of calculating the
ideal body weight of women
and men (age 18 or older).
The
Hamwi formula is well known as a popular method of calculating ideal weight.
It takes into account three factors:
gender,
height, and
frame size.
The Hamwi formula is defined in
imperial units:
For women: 100 pounds for the first 5 feet
+
5 pounds for each additional inch
For men: 106 pounds
for the first 5 feet +
6 pounds for each additional inch
Subtract
10% for a person with a
small frame
Add
10% for a person with a
large frame
This is an approximate formula in
metric units
(with rounded weight values):
For women: 45 kg for the first 152.4 cm
+
0.9 kg for each additional cm
For men: 48 kg
for the first 152.4 cm +
1.1 kg for each additional cm
Subtract
10% for a person with a
small frame
Add
10% for a person with a
large frame
Note: The Ideal Weight Calculator is more accurate than this approximate formula.
The Ideal Weight Calculator works accurately in both
metric units
and
imperial units.
It always performs all calculations in imperial units according to the
original Hamwi formula and converts the height and weight values
using sufficiently accurate conversion rules: (
1 inch = 2.54 cm)
and (
1 pound = 0.4536 kg).
The calculated weight values are shown in the calculator as
rounded to the nearest
0.1 kg in metric units or
0.1 lb
in imperial units.
How can I determine my frame size?
A quick and easy way to determine your frame size is to wrap your thumb and index finger
around your wrist.
- If they overlap, you have a
small frame.
- If they barely touch, you have a
medium frame.
- If they do not touch, you have a
large frame.
Are there other ideal weight formulas?
There are other formulas for calculating ideal weight, and some of them are similar
to the Hamwi formula, for example the
B.J. Devine formula (1974),
the
J.D. Robinson formula (1983), and the
D.R. Miller formula (1983).
Are ideal weight formulas for everyone?
No, most ideal weight formulas are
less applicable to
muscular individuals or even those who just have
good muscle tone.
Having more lean muscle tissue and a low body fat percentage can actually increase your
body weight because
muscle is more dense than fat. This is why
athletic people, although very fit and healthy, are often
above
their ideal body weight derived from ideal weight formulas.
Ultimately, any recommendation regarding the optimum weight of an individual
should always be made by
a qualified healthcare professional
whose main priority is
the health aspect.
DISCLAIMER
1) We
do not endorse any products or services offered in the
advertisements appearing on this website.
2) We
do not endorse and
are not associated
with any weight loss program or diet plan.
3) We
do not comment on the validity of the Hamwi formula.
4) The main purpose of this web page is to provide you with
an interactive version of the Hamwi formula calculator.
How you use it is entirely up to you.
5)
Most importantly, if you intend to start any weight loss program or diet plan,
discuss it with a qualified healthcare professional.
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