Q: How many Calories (IT) in 1070 Kilojoules? The answer is 255,565. Q: How many Kilocalories in 1070 Kilojoules? The answer is 255. 1070 kilojoules is 256 calories. Kilojoules (kJ) to calories (cal), energy conversion calculator and how to convert. Convert 1070 Kilojoules to Calories (1070 kJ in cal). Enter a value in either box above, and we'll convert it.