Question 1

How many calories are in one kilocalorie?

Accepted Answer

One kilocalorie (kcal, the unit used on food labels) equals 1,000 calories. In nutrition, a Calorie with a capital C means kilocalorie, so 1 Calorie = 1,000 calories = 1 kcal.

Question 2

How do I convert watts to kilowatts?

Accepted Answer

Divide watts by 1,000. One kilowatt equals 1,000 watts. A 1,500-watt heater uses 1.5 kW, which at $0.15/kWh costs about $0.225 per hour to run.

Question 3

What is the relationship between joules and watts?

Accepted Answer

One watt is one joule per second. So a 100-watt bulb uses 100 joules every second, or 360,000 joules per hour. The energy converter handles joules, watts, BTU, kWh and more.

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