kj to calories

KJ To Calories Converter App (Free, Works Offline)

Install the free kJ to Calories converter on your phone, tablet or computer. No app store, no sign-up, it opens from your home screen and works offline.

kJ to Calories App

kJ
Quick values
Common foods
1,000 kJ ÷ 4.184 = 239.01 kcal
Result
239.01 kcal
Food Calories (1 Calorie = 1 kcal)
56 minWalking
24 minRunning
29 minCycling
Share of an 8,700 kJ (2,079 kcal) day
11.5% of the average adult daily intake
Joules (J)1,000,000
Small calories (cal)239,006

Exercise times are estimates for a 70 kg adult.

On iPhone or iPad: tap Share then Add to Home Screen. On Android or desktop Chrome/Edge: use the Install button above, or the browser menu → Install app.

kJ to Calories converter app on a phone converting 1,450 kJ
The converter app on a phone.
On this page

A kJ To Calories App Without The App Store

This converter is a progressive web app (PWA). That means you can install it straight from your browser and it behaves like a normal app: its own icon on your home screen, full-screen window, and it keeps working offline once you’ve opened it. There’s nothing to download from an app store, no account, and no ads inside the tool.

How To Install It

iPhone And iPad (Safari)

  1. Open this page in Safari.
  2. Tap the Share button (the square with an arrow).
  3. Scroll down and tap Add to Home Screen, then Add.

Android (Chrome, Samsung Internet, Edge)

  1. Open this page in your browser.
  2. Tap Install the kJ to Calories app above, or open the browser menu (⋮) and choose Install app or Add to Home screen.
  3. Confirm, and the icon appears with your other apps.
kJ to Calories converter app open on a desktop browser
The app in a desktop browser window.

Windows, Mac And Chromebook (Chrome Or Edge)

  1. Click the install icon in the address bar, or open the menu and choose Install kJ to Calories Converter.
  2. It opens in its own window and can be pinned to your taskbar or dock.
kJ to Calories app result screen: 1,450 kJ equals 346.56 kcal with exercise equivalents
Result screen: answer, exercise equivalents and share of your day.

What The App Does

  • kJ ⇄ Calories in both directions with one tap to switch.
  • Quick values and common foods for one-tap answers.
  • Exercise equivalents: minutes of walking, running and cycling.
  • Share of your day against the 8,700 kJ reference.
  • Copy result to paste into a food diary or message.
  • Works offline after the first visit, so it’s handy in the supermarket.

Privacy

Everything is calculated on your own device. The numbers you type are never sent to us. See our privacy policy.

More Tools You Can Use In The App

Once installed, every calculator on the site opens inside the app window:

FAQ

Is there a kJ to Calories converter app?

Yes. This page installs as a free app on iPhone, Android, Windows, Mac and Chromebook, no app store needed.

Does the app work offline?

Yes. After you’ve opened it once with an internet connection, the converter keeps working without one.

Is the app free?

Yes, completely free, with no sign-up.

Why don’t I see an Install button?

Some browsers (including Safari on iPhone) don’t show one. Use the browser’s Share or menu option, Add to Home Screen or Install app, instead.

Can I change my phone’s fitness apps from kJ to Calories?

Yes, see our guides for Apple Watch, MyFitnessPal and other health apps.