Energy Converter
Energy converters connect food labels (kcal), electricity bills (kWh), physics (joules), and heating (BTU). Use them to compare appliance consumption, recipe nutrition, and science problems on one consistent scale.
Converter
Select units, then type a value
Every energy unit lives in these two lists — no extra pages to hunt through.
0.2390057361
Formula: Calorie = Joule × 0.239005736138
Joule to Calorie table
Common values for the pair currently selected above.
| J | cal |
|---|---|
| 1 | 0.2390057361 |
| 2 | 0.4780114723 |
| 3 | 0.7170172084 |
| 4 | 0.9560229446 |
| 5 | 1.195028681 |
| 6 | 1.434034417 |
| 7 | 1.673040153 |
| 8 | 1.912045889 |
| 9 | 2.151051625 |
| 10 | 2.390057361 |
| 20 | 4.780114723 |
| 50 | 11.95028681 |
| 100 | 23.90057361 |
| 250 | 59.75143403 |
| 500 | 119.5028681 |
| 1,000 | 239.0057361 |
Units on this converter
- Joule (J)
- Kilojoule (kJ)
- Calorie (cal)
- Kilocalorie (kcal)
- Watt-hour (Wh)
- Kilowatt-hour (kWh)
- BTU (BTU)
- Foot-pound (ft·lb)
FAQ
How do I convert energy units on this page?+
Choose the starting unit in From, the target unit in To, then type a number. All 8 energy units are in those dropdowns — there is not a separate page for each pair.
Which energy units can I convert?+
Joule (J), Kilojoule (kJ), Calorie (cal), Kilocalorie (kcal), Watt-hour (Wh), Kilowatt-hour (kWh), BTU (BTU), Foot-pound (ft·lb).
How do I convert joules to calories?+
Select Joule in From and Calorie in To, then enter the value. The result updates immediately.
Why is there one page instead of a page for every conversion?+
One strong converter per category is easier to use and cleaner for search than hundreds of nearly identical pair pages.