Soba 1300 kJ is equal to 310.7 calories. The conversion between kilojoules (kJ) and calories (kcal) is 1 kJ = 0.239 calories. Therefore, to convert the calories of soba noodles from kilojoules to kilocalories, you can use the following formula: calories (kcal) = calories (kJ) × 0.239 Assuming that the calorie content of soba noodles is 1,300 kilojoules, the conversion to kilocalories is calculated as follows: calories (kcal) = 1,300 kilojoules × 0.239 = 310.7 kilocalories. Therefore, the caloric value of soba noodles is 310.7 calories.