Watt ↔ kWh ↔ taka converter

Electricity billing rests on one core conversion: power (watts) multiplied by time (hours) gives energy (watt-hours), and dividing by 1,000 turns that into kilowatt-hours — the "unit" printed on every Bangladeshi bill. A 60W fan running for 10 hours consumes 600 watt-hours, or 0.6 units. Run five identical fans for the same 10 hours and you've used 3 units, because energy simply adds across devices the same way cost does. This additive property is what makes a multi-device converter useful: rather than calculating five appliances separately and manually summing them, you can see the combined total and where each device's share comes from.

The taka conversion is the only step that depends on where you live and how much you use, since Bangladesh's residential tariff is progressive. The same 3 units might cost roughly ৳15.78 if they fall inside your 0–75 unit slab at ৳6.18 each, but the identical 3 units could cost ৳9.62 more if your household has already crossed into the 301–400 slab that month. For an accurate combined-cost estimate, use the marginal rate that applies to your current total consumption, not a single "average" number, since that is what determines what these specific added units will actually cost on your next bill.