BMI Calculator

Understanding your Body Mass Index

BMI or “Body Mass Index” can be a useful tool to assess how your weight may be impacting your health.

As your weight increases or decreases out of the recommended weight range, it can increase your risk of health problems.

To calculate your BMI, simply fill in your details below and get your free BMI analysis.

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While BMI is a useful health indicator for most people over 18 years of age, it is only an estimate and doesn’t account for age, ethnicity, gender and body composition. It is not suitable for children and pregnant women.

Jenny Craig BMI Calculator

If you’re worrying about your weight, chances are you’re focused on how you look and how well you fit into your jeans. But the most important thing to consider is whether or not your weight is classified as healthy. Living within a healthy weight range means not being underweight or overweight because both can increase your risk of health problems. And if you’re not in good health, how you look in your jeans is the least of your problems!

The best way to ascertain whether your current weight would fall into a healthy weight range is by using a tool which can calculate your body mass index, known as your BMI.

How Jenny Craig can help improve your BMI?

If your BMI falls outside of the recommended range, Jenny Craig can help. At Jenny Craig the focus is not simply on losing weight but on being your best possible self, using meal plans and physical activity to ensure the optimum health of your body. How will we know when we achieve that? Your BMI will fall into the healthy weight range. Oh, and you might just feel fabulous too!

At your first visit your Jenny Craig Consultant will assess your weight and calculate your BMI. You will also discuss your weight goals and the methods by which Jenny Craig will help you achieve them. Your dedicated personal consultant is trained to help you with the challenges everybody faces when striving to achieve a healthy weight, and to provide support throughout your journey until you reach your ideal BMI.

On a Jenny Craig program you will receive guidance, weight loss meal plans designed by Accredited Practising Dietitians, advice and encouragement, inspiring you to learn more about your weight and your health, and to achieve a healthier lifestyle. And if one of your goals is to fit into your jeans? No problem – your personal Jenny Craig Consultant will help with that too.

Enjoy Shortbread from the Jenny Craig menu, pictured above. See the full menu.

What is BMI?

The body mass index is an equation used by health professionals to ascertain if you are in a healthy weight range. Rather than considering your weight in isolation, the BMI evaluates the relationship between your weight and your height in metres. Of course, if the scales aren’t tipping in your favour you can always blame your lack of height, but sadly a pair of stiletto heels won’t change your BMI…
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How can you work out your BMI?

Your BMI is a simple metric calculation dividing your weight by your height squared. As an example, a 1.7 metre tall, 70 kilogram person would do the equation like this:

Weight (70kg) ÷ height squared (1.7m x 1.7m) = 24.2 BMI.

If you’re good at maths measure your height and weight and feel free to do the calculation. Or, enter your height and weight into a BMI calculator like the one on our page. It’s that easy!

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Is BMI accurate?

BMI categories are based on classifications made by the World Health Organisation. While BMI isn’t a perfect way of estimating if your weight is healthy due to its inability to include factors such as muscle vs fat, it remains a very good health indicator and the best tool we have. It should always be noted that BMI is an estimate only and doesn’t take into account your age, gender, natural body composition and ethnicity – all of which impact upon your weight.

What is a good BMI?

A healthy BMI is considered to be between 18.5 and 24.9. But remember, it is an estimate and individual factors such as gender or age may put you outside of that. Your muscle and bone density are also factors which may affect which range your BMI falls into.

Generally speaking, a BMI of 18.4 or less is considered underweight and a BMI of between 18.5 and 24.9 is within the healthy range. And here’s the good news about having a good BMI – you are less likely to suffer from chronic disease such as Type 2 diabetes and heart disease.

The Jenny Craig weight loss program provides education, strategic direction, dedicated support and guidance to successfully lose the weight and keep it off for life.

What BMI is considered overweight?

A BMI of between 25.0 and 29.9 is categorised as overweight and a BMI of 30.0 and above is classified as obese. If this is you, don’t worry – Jenny Craig will work with you to achieve a healthy BMI and a healthy body you can be proud of. You may even feel like treating yourself to a new pair of jeans when you reach your ideal BMI.

What is the best BMI for a male?

Sorry, but if you fall outside a healthy BMI range you can’t claim it’s because you’re a bloke! The same BMI calculator is used to determine both sexes because the weight range for healthy and unhealthy is the same, irrespective of gender. That said, it is acknowledged that men and women have different body compositions. But as we said, BMI is a healthy weight indicator, not a rule.

“I have a better relationship with food. I understand it more. And I know what I can and can’t eat.”

What is the ideal BMI for a female?

The ideal BMI for a female is the same as the ideal BMI for a male. BMI doesn’t differentiate based on gender, age or a number of other factors. Remember, BMI is a range, not an exact figure. It is also important to note that pregnant women are not included in the BMI calculator. Pregnant women should only undertake weight loss programs with the direct supervision of a doctor or a qualified health practitioner.

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Does age impact the body mass index?

Age doesn’t actually affect your body mass index directly. Age is only related to an increasing waist circumference because of a decreasing metabolic rate and a more sedentary lifestyle – which in turn negatively impacts on BMI. But with sustained, regular exercise at a suitable level and opting for a nutritionally balanced, portion-controlled diet, getting older doesn’t have to mean gaining weight.

If you are still young and have more growing to do, your BMI will obviously change if you remained the same weight but grew taller. BMI is therefore generally used as a measure for fully grown adults.

Enjoy Mexican-style Slow Cooked Pork for dinner from the Jenny Craig menu, pictured above. See the full menu.

What should you eat to improve your body mass index?

A healthy, nutritionally balanced diet which includes lean meat or protein sources, fish, vegetables, salad, wholegrains, reduced fat dairy products and fresh fruit will improve your BMI. However, it’s not only about what you eat, but how much, so portion control is an important method of improving your BMI too.

You should still eat your snacks between meals, but they should be healthy snacks – and snack sized, not meal sized! Don’t worry, our personalised meals plans will detail all of this for you.

^Individual results may vary. Discover Lara’s Success Story

What foods should you avoid to improve your BMI?

Your body mass index will reduce if you eat less kilojoules than your body needs, preferably by reducing your intake of saturated fats, added sugars and fried foods. At Jenny Craig we focus on teaching you sensible eating habits which means being aware of good nutrition, a balanced approach to eating and portion control.

People are often surprised to find they can still eat some foods they love when on a Jenny Craig weight loss plan. This is because it is recognised that depriving yourself is not sustainable in the long term, and it is important to lose your weight while maintaining an active social life. At the end of the day it’s all about balance, being aware of the importance of good nutrition, controlling your portion sizes, changing your habits and engaging in mindful eating.

Your Jenny Craig weight loss plan can be of a short or long duration – the sooner you start – the better.

What are the benefits of improving your BMI?

Being overweight is a health risk, so your physical and mental wellbeing will benefit from reducing your waist measurement and BMI.

An excessive waist circumference is associated with increased visceral fat, which means fat around the internal organs – a definite health risk.

The risk factors related to being overweight include cardiovascular disease and stroke, Type 2 diabetes, high blood pressure and cancer. There is increased strain on the spine, ligaments and joints and the internal organs don’t function optimally, particularly the kidneys and liver.

As your improved eating habits begin to improve your BMI you will feel more energised which in turn makes it easier to enjoy being physically active, which in turn helps you to lose more weight… and so on. It’s a chicken and egg kind of thing – both of which are nutritious foods by the way!

Can you improve your BMI with exercise?

You certainly can. Exercise is a key component to sustained weight loss and improving your BMI. At Jenny Craig we encourage increased physical activity, which may be anything active that you enjoy doing that is effectively burning kilojoules and losing weight.

It’s really important to find exercise you enjoy doing, because it means you are likely to make it a habit. It’s also good to include stretching in your routine. If you are likely to forget to stretch after your gym session, big walk or jog, perhaps try joining a class which has a focus on stretching.

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How long does it take to reduce your BMI?

The time it takes to reduce your body weight is an individual thing. The Jenny Craig weight loss program is designed to achieve a weekly weight loss of ½ to 1 kilogram but this will vary for everyone.

If you are keen to get those weight loss results happening quickly, you will love our Rapid Results program. This program works with your natural body clock, referred to as the circadian rhythm, to provide your body with two distinct periods, one of nourishment and one of rejuvenation.

This means that in one twelve hour cycle you consume and burn your recommended daily kilojoules and in the other twelve hour period your body gets a break from processing food to regenerate, repair and restore itself. Working with your body in this way can help you to lose weight faster.

How can Jenny Craig help improve your BMI?

Jenny Craig will provide you with a personal weight loss Consultant who will guide, educate and support you in losing weight. Your dedicated Consultant will provide you with targeted meal plans designed by Accredited Practising Dietitians which are strictly kilojoule controlled. Your Consultant will also help you to increase your physical activity and find exercise you enjoy doing, while advocating mindful eating along with a balanced, positive mindset.

On your Jenny Craig journey you will learn about making healthy food choices along the way, as well as how to have a positive approach to living an active life and a healthy relationship with food. You won’t just look better, you’ll feel better too.

Jenny Craig also provide maintenance programs. When you have achieved your ideal body mass index you will have all the knowledge and the tools needed to maintain a healthy weight – and look great in your jeans – for life!

On Rapid Results Max, Members lost an average of 6 kgs in the first 4 weeks!#