Convert calories to kilojoules, and vice versa, with this handy tool.
Enter a value in either box above and we'll convert it.
Formula: 1 Cal = 4.184 kJ, rounded to the nearest whole number.
Calorie counting can be a helpful tool for weight management, but it’s only one part of a healthy approach to eating.
A calorie deficit is the key to weight loss but understanding it safely and sustainably is just as important as the numbers.
Your hands are one of the simplest tools you can use to learn portion control, here’s how to put them to work for a balanced plate.
Learn a simple way to build balanced meals, half plants, a quarter protein, a quarter wholegrain carbs, plus a little healthy fat.
This calculator converts between Calories and kilojoules, rounded to the nearest whole number. It uses the formula 1 Calorie = 4.184 kilojoules.
Tracking calories is one way to help keep your weight within a healthy range, but the best approach is to enjoy a nutritious, well-balanced diet.
This calculator has been reviewed by Bupa health professionals and is based on reputable sources of medical research. It is not a diagnostic tool and should not be relied on as a substitute for professional health advice.