Energy Conversion Calculator
Convert energy units like kcal · kWh · MJ · BTU · TOE all at once.
Enter Value
Reference: 1 kWh = 859.845 kcal, 1 TOE = 107 kcal (IEA standard)
Conversion Result
The energy/calorie conversion calculator converts between kcal, kWh, MJ, BTU, TOE, and other energy units at once — useful for comparing values across different unit systems, like the kWh on your electricity bill versus the kcal on a food label.
Where each unit is used
kcal is used for food calorie labeling, kWh for electricity usage, BTU for air conditioner/heater capacity ratings, and TOE (tons of oil equivalent) mainly in national energy statistics. 1 kWh is roughly equivalent to 860 kcal.
Frequently Asked Questions
Does this help with calculating electricity bills?
Multiplying an appliance's power draw (W) by hours of use and converting to kWh lets you compare it against other energy units or estimate rough usage.
Why is TOE used?
It's used in national energy statistics to unify different energy sources — oil, electricity, gas — onto a single basis (equivalent to one ton of oil) for comparison.
Related tools
Ad
