Kilocalories (kcal) to Calories (cal) Converter
Enter a value to instantly convert between energy units.
1 Kilocalorie = 1000 Calorie (thermochemical)
Key Formulas
Kilocalorie → Kilojoule
kJ = kcal × 4.184Kilojoule → Kilocalorie
kcal = kJ × 0.239006Kilowatt-Hour → Joule
J = kWh × 3600000Joule → Kilowatt-Hour
kWh = J × 2.77778e-7Formula
cal = kcal × 1000One kilocalorie (kcal) equals exactly 1000 calories (cal). The kilocalorie is the 'Calorie' shown on food labels — the energy to raise 1 kg of water by 1°C. Converting to scientific calories means multiplying by 1000.
Source: NIST SP 811, Table B.8
Frequently Asked Questions
Real-World Examples
A nutrition database recording 1 kcal from a food label expresses it as 1000 cal for scientific literature.
1 kcal = 1000 cal
A diet plan of 2000 kcal/day converts to 2,000,000 cal for the metabolic research paper.
2000 kcal = 2000000 cal
A small apple providing 0.5 kcal (50 Cal) contains 500 cal of energy — for the calorie counter.
0.5 kcal = 500 cal
A chocolate bar with 250 kcal provides 250,000 cal — a useful comparison for the chemistry class.
250 kcal = 250000 cal