Energy, Electricity & UtilitiesMulti-Unit Energy
Energy Consumption Calculator
Calculate electrical energy consumption across hours, days, weeks, and months with conversions into kWh, Watt-hours, Joules, and British Thermal Units (BTU).
Energy Value & Unit Conversion
Equivalent kWh
—
standard electric
Equivalent Cost
—
at kWh rate
Megajoules (MJ)
—
SI metric unit
BTU & Therms
— BTU
— therms
Energy Conversion Equations
Energy (kWh) = Power (kW) × Time (Hours) | 1 kWh = 3.6 × 10⁶ Joules = 3,412.14 BTU- Kilowatt-Hours (kWh): Standard commercial billing unit for electric energy.
- Joules (J): Metric SI unit of physical work and energy (1 Watt-second).
- BTU (British Thermal Unit): Imperial heat energy metric (1 BTU raises 1 lb of water by 1°F).
Step-by-Step Worked Example
Scenario:
Calculation Steps:
Result:
How to Use This Calculator
Assumptions & Limitations
- Conversions use standard international scientific constants (1 kWh = 3,600,000 J = 3,412.142 BTU).
- Assumes steady constant load throughout the evaluated period.
Frequently Asked Questions
Why convert electrical energy into BTU?
Converting electrical kWh into BTU allows you to directly compare heating and cooling equipment against natural gas, propane, and fuel oil systems on an equivalent thermal energy basis.
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