Watt to Amp Calculator for Dubai and the UAE

Three numbers, and they are connected by one simple rule.

Volts is the push. Amps is the amount of current flowing. Watts is the work being done, and it is the two multiplied together.

So watts divided by volts gives amps. A 2,000 watt heater on 230 volts draws about 8.7 amps.

This is why voltage matters so much to the answer. The same 2,000 watt heater on 120 volts would draw nearly 17 amps, which needs twice the cable.

It is also why so many online calculators give the wrong answer for the UAE. They assume a 120 volt supply and nothing tells you they have.

The UAE uses 230 volts at 50 hertz, single phase, with British style three pin sockets.

Higher voltage means less current for the same power, and less current means thinner cable can do the job. That is the practical advantage.

Larger properties and commercial premises get three phase, at 400 volts between phases. Big loads like central air conditioning, lifts and pumps are usually three phase.

One thing that matters if you bring appliances from abroad. Something made for 120 volts will not simply work here, and something made for 240 volts will. Check the label before you plug anything in, because the plug fitting is not proof that the voltage matches.

Frequency matters for some motors too. Equipment made for 60 hertz can run slower or hotter on our 50 hertz supply.

For anything that only makes heat or light, the sum is straightforward. Watts divided by volts, and that is your answer.

For anything with a motor, it is a little more. A motor draws current that goes back and forth without doing useful work, and that current still has to travel down the cable.

Power factor is how much of the current is doing real work. A heater is 1.0, meaning all of it. A motor might be 0.8, meaning it draws about a quarter more current than the watts alone suggest.

So for air conditioners, pumps, fridges and washing machines, use 0.85 and you will be closer to reality.

For lights, heaters, kettles and ovens, leave it at 1.0.

Rough figures so you can sense check the answer. Always read your own label.

Two things: choosing the breaker and choosing the cable.

The breaker protects the cable, not the appliance. It has to trip before the cable overheats, so it is sized to the cable and to the load together.

The cable has to carry the current without getting hot. A long run needs a larger cable than a short one for the same current, because resistance adds up over distance.

This is why the answer here is a starting point rather than a specification. A qualified electrician selects the cable and the breaker together, allowing for the run length, how the cable is installed and what else shares the route.

What the number is genuinely good for is checking. If a 3,000 watt heater is sitting on a 10 amp breaker, something is wrong, and now you know enough to ask.