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Electrical Unit Calculator

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Appliance:
Qty:
Watt:	(W)
Usage Hrs:	(Hrs)
Total Days:	(Days)
Cost / Unit:
Currency:

Result

Units	Output
Total Watt:	120 Watt (W)
Total Hours:	60 hour (h)
Total Watt-Hour:	7200 (Wh)
Total (kWh):	7.2 kWh.
Total Amt:	33.62 INR

Appliance	Qty	Watt	Hrs/day	Days	Cost/Unit	Currency

Single Appliance Formula

Solution:

STEP 1: Find the Watt of the Appliance.
STEP 2: Find total hour i.e hours/day × total days.
STEP 3: Multiply value of STEP 1 × STEP 2.
STEP 4: Divide the value of STEP 3 / 1000

kWh =

Watt ( W ) × time ( h)

10³

Multi Appliance Formula

Solution:

STEP 1: Find the Watt of all the Appliances.
STEP 2: Find total hour i.e hours/day × total days.
STEP 3: Multiply value of STEP 1 × STEP 2.
STEP 4: Divide the value of STEP 3 / 1000

kWh =

Total Watt ( W ) ×Total time ( h)

10³

The Kilowatt-hour (kWh) is a unit of energy,which is equivalent to one kilowatt (1 kW) of power, expended for one hour (1 h) of time. Any energy expenditure of 1 kWh represents 3,600,000 joules
(3.600 x 10⁶) To obtain joules one must multiply kilowatt-hour by 3.600 x 10⁶.

And to obtain kilowatt-hour when joules are known, then multiply by 2.778 x 10^-7 In general, energy (E) is equivalent to power (P) multiplied by time (t). To determine E in kilowatt-hours, P must be expressed in kilowatts and t must be expressed in hours.
Suppose,
a 2.5 kW electric fan runs for 4 hours.
Then, P = 2.5 and t = 4, so the Energy E in kilowwatt-hours is:

E = P x t = 2.5 x 4 = 10 kWh

The consumption of electrical energy by homes and small businesses is usually measured in kilowatt-hours. Larger businesses and institutions sometimes use the megawatt-hour (MWh), where
1 MWh = 1,000 kWh. The energy outputs of large power plants over long periods of time, or the energy consumption of states or nations, can be expressed in
gigawatt hours (GWh), where 1 GWh = 1,000 MWh = 10⁶ kWh.