Read more: http://foodwatch.com.au/blog/measures-and-conversions/item/how-to-convert-kilojoules-to-calories.html#ixzz2u1TTlEoY
Taken from Food Blog….. Interesting read to measure…How to convert kilojoules to calories
Written by Catherine Saxelby on Wednesday, 30 September 2009. Posted in Measures and conversions
Tagged: calories, conversions, dieting, diets, energy, fat loss, food labels, FSANZ, kilojoules, nutrients, technology
Just like yards became metres and pounds became grams, so calories have become kilojoules. Kilojoules are the metric equivalent of calories and have replaced calories in almost all countries. Yet they’re very confusing, especially to my US visitors who have always only known calories (lucky for me, I grew up with calories then had to learn kilojoules!)
These are the units used to measure food energy – kilojoules (abbreviated to kJ) and Calories (Cals). Kilojoules are four times larger than calories eg a bowl of cereal supplies around 480 kilojoules or 117 Calories.
Conversion is 4.2 … or just 4
1 calorie equals 4.186 kilojoules (4.2 or simply 4 is close enough for a quick conversion).
For example, a slice of bread supplies 290 kilojoules or (290 divided by 4) 70 Calories.
Kilojoules are difficult to grasp if you don’t have a feel for the numbers. So here’s a handy guide to make things more ‘friendly’.
|kJ||cals||Intake or level|
|10000||2400||Typical level of intake of most teenagers|
|8700||2070||Average intake used to calculate %DI on food labels|
|7500||1800||Typical weight loss level for a moderately-active man|
|7000||1650||Typical weight loss level for a sedentary man|
|6000||1500||Typical weight loss level for a moderately-active woman|
|5000||1200||Typical weight loss level for a sedentary woman|
|4000||1000||Supervised fast or meal replacement intake
– too low for normal activity
Here’s how food compares in kilojoules and calories:
|Canned salmon, drained||1 can||150g||525||125|
|Tim Tam chocolate biscuits||2||38g||840||200|
|Krispy Kreme doughnuts
|Orange juice||1 glass||250ml||400||95|