Bulk convert a list
Paste many values — one per line, or separated by commas or spaces. A column copied from Excel works too. They are converted with the units chosen above.
How to convert kJ to kcal
One kilocalorie is 4.184 kilojoules, so one kilojoule is about 0.239 kcal. To turn kJ into kcal, divide by 4.184 (or by 4 for a quick answer).
Formula: kcal = kJ ÷ 4.184
Example: 1,000 kJ ÷ 4.184 = 239 kcal
The "Calories" on a food label are kilocalories. So 1,000 kJ on a label is about 239 Calories.
Features
- Instant answer — type kJ in the From box and see the kcal as you type
- Formula line — under the boxes, see what 1 unit is in the other unit, both ways
- Swap (⇄) — turn kcal back into kJ in one click, with no rounding error
- kcal, not small calories — the Kilocalorie unit is the food "Calorie"; pick Calorie only for the small calorie
- Every unit in the list — kcal, kJ, calories, joules, Wh, kWh and BTU; or pick another Category, like length, weight or temperature
- Bulk convert a list — paste many kJ values, one per line or a column from Excel; each line keeps its place, and a line like "Box A 12.5" converts its number
- Three ways to show the list — Results only, Value and result or CSV (for Excel), with 0 to 6 Decimal places; then Copy results or Download CSV
- Private — it all runs in your browser; nothing is uploaded
kJ to kcal table
| Kilojoules (kJ) | Kilocalories (kcal) |
|---|---|
| 1 | 0.24 |
| 100 | 23.9 |
| 250 | 59.8 |
| 500 | 119.5 |
| 840 | 200.8 |
| 1,000 | 239 |
| 1,500 | 358.5 |
| 2,000 | 478 |
| 2,500 | 597.5 |
| 4,184 | 1,000 |
| 5,000 | 1,195 |
| 8,700 | 2,079.3 |
| 10,000 | 2,390.1 |
Values are rounded to 1 decimal place (the first row to 2).
Bulk convert a list of kJ to kcal
Got a whole menu or a meal plan? Paste the values under Bulk convert a list and every line is converted at once — a bulk kJ to kcal converter on the same page.
- Paste values one per line, separated by commas or spaces, or a column copied from Excel or Google Sheets
- Lines keep their order; a line with text, like "Lunch 2700", converts its number
- Show results only to paste back into your sheet, value and result, or CSV
- Pick the decimal places, then copy the results or download a CSV file
Kilojoules in daily life
- Food labels: in Australia and New Zealand, labels show energy in kJ; in Europe they often show kJ and kcal side by side
- A day of food: Australian labels use 8,700 kJ as the average adult daily intake — that is about 2,079 kcal
- A snack: 840 kJ is about 201 kcal
- A meal: 2,500 kJ is about 598 kcal
How to use it
- Type a number in the From box — the answer appears straight away
- Click Swap (⇄) to convert the other way, from kilocalories to kilojoules
- Change the units or the category to convert anything else — joules, watt-hours, kilowatt-hours, BTU and more
- Many values at once? Paste them under Bulk convert a list — one per line, or a column from Excel — and copy the results or download a CSV
Frequently asked questions
How many kcal is 1 kJ?
1 kilojoule is 0.239 kilocalories.
How many calories is 1,000 kJ?
1,000 kJ is 239 kcal — 239 food Calories.
Are kcal and Calories the same?
Yes. The "Calorie" with a capital C on food labels is one kilocalorie. A small "calorie" (cal) is 1,000 times smaller: 1 kcal = 1,000 cal.
How do I convert kJ to kcal in my head?
Divide by 4, then take away about 5%: 1,000 kJ → 250 − 12.5 = about 238 kcal (exact: 239).
Can I convert many kJ values at once?
Yes. Paste them under Bulk convert a list — one per line, or a column from Excel — and all of them are converted together. Copy the results or download them as a CSV file.
Is my data sent anywhere?
No. The conversion runs in your browser, on your own device.
Related tools
- kcal to kJ — the other way
- Calorie Calculator — how many calories you need a day
- Calories Burned Calculator — calories used by exercise
- Macro Calculator — protein, carbs and fat
- Unit Converter — every unit in one place
