Qatar Electricity and Water Bill Calculator
Estimate your monthly Kahramaa bill from the kWh and cubic metres you use, slab by slab. Advanced adds AC estimates, your own rates and a second month to compare.
The month's kWh from your bill, or this month's meter reading minus last month's.
Leave empty to use the slab tariff. A flat rate here replaces the slabs.
Slab-by-slab breakdown
| Slab | Used | Price (QAR) | Cost (QAR) |
|---|
How your bill is worked out
Each slab of use × its price, electricity plus water.
- 1
Electricity slabs
3,000 kWh in 2 slabs
= QAR 350.00 - 2
Water slabs
25 m³ in 2 slabs
= QAR 145.00 - 3
Add them up
350.00 + 145.00
= QAR 495.00 - 4
Cost per day
495.00 ÷ 30 days
= QAR 16.50
Read more: the slab tariffs, the formula, a worked example and tips
Kahramaa (the Qatar General Electricity and Water Corporation) bills electricity in kilowatt-hours (kWh) and water in cubic metres (m³) each month. The tariff depends on the type of premises. Flats, villas and commercial premises are charged in slabs: the first block of the month's use is charged at the lowest price and each later block at a higher price. Hotels, subsidised industry, government and farms pay one flat price.
The formula
slab cost = units used in that slab × that slab's price
electricity = sum of the electricity slab costs
water = sum of the water slab costs
bill = electricity + water
cost per day = bill ÷ days in the bill
Worked example
A flat uses 3,000 kWh of electricity and 25 m³ of water in a 30-day bill.
- Electricity: the first 2,000 kWh × QAR 0.11 = QAR 220.00, and the next 1,000 kWh × QAR 0.13 = QAR 130.00, so electricity is QAR 350.00.
- Water: the first 20 m³ × QAR 5.50 = QAR 110.00, and the next 5 m³ × QAR 7.00 = QAR 35.00, so water is QAR 145.00.
- Bill: 350.00 + 145.00 = QAR 495.00, which is 495.00 ÷ 30 = QAR 16.50 a day.
Estimating kWh from your AC
AC kWh = AC units × tons × kW per ton × hours a day × days
1 ton = 12,000 BTU/h = 3.517 kW of cooling
Three 1.5 ton standard split units (1.3 kW per ton) running 14 hours a day use 3 × 1.5 × 1.3 × 14 = 81.9 kWh a day, or 2,457 kWh in 30 days. Add 10 kWh a day for everything else (300 kWh) and the month is 2,757 kWh. In winter at 4 hours a day the same AC uses 702 kWh.
Kahramaa tariffs
From Kahramaa's tariff page, checked on 13 October 2026. The slabs apply to each monthly bill. Kahramaa publishes no fixed monthly charge, so none is included.
| Electricity | QAR/kWh |
|---|---|
| 0 – 2,000 kWh | 0.11 |
| 2,001 – 4,000 kWh | 0.13 |
| 4,001 – 15,000 kWh | 0.18 |
| Above 15,000 kWh | 0.26 |
| Water | QAR/m³ |
| 0 – 20 m³ | 5.50 |
| 21 – 250 m³ | 7.00 |
| Above 250 m³ | 10.00 |
| Electricity | QAR/kWh |
|---|---|
| 0 – 4,000 kWh | 0.13 |
| 4,001 – 10,000 kWh | 0.17 |
| Above 10,000 kWh | 0.22 |
| Water | QAR/m³ |
| 0 – 50 m³ | 6.00 |
| Above 50 m³ | 8.60 |
| Electricity | QAR/kWh |
|---|---|
| All kWh | 0.15 |
| Water | QAR/m³ |
| All m³ | 5.80 |
| Electricity | QAR/kWh |
|---|---|
| All kWh | 0.13 |
| Water | QAR/m³ |
| All m³ | 5.40 |
| Electricity | QAR/kWh |
|---|---|
| All kWh | 0.32 |
| Water | QAR/m³ |
| All m³ | 9.20 |
| Electricity | QAR/kWh |
|---|---|
| All kWh | 0.07 |
| Water | QAR/m³ |
| All m³ | 5.20 |
Bulk industrial (over 5 MW or over 600 m³ a day, with a Bulk Supply Agreement) is not worked out here. Its electricity is time-of-use: in summer (1 May to 31 October) QAR 0.34 per kWh at peak (12 noon to 6 pm) and QAR 0.24 off-peak (6 pm to 12 noon); in winter (1 November to 30 April) QAR 0.21 all day. Its water is QAR 6.50 per m³.
Good to know
- Summer bills are often two to three times winter bills because of air conditioning. Setting the AC 1 to 2 °C warmer and cleaning filters cuts kWh noticeably.
- Because the slabs get dearer, cutting use in a high month saves more per kWh than cutting it in a low month.
- Your bill may also show a deposit, reconnection fee or a balance carried over. Those are not part of the usage charge worked out here.
- Water in litres or gallons is converted to m³: 1,000 litres = 1 m³, 1 US gallon = 0.003785 m³, 1 UK gallon = 0.004546 m³.
An estimate for general information. Tariff checked on 13 October 2026 against https://www.km.qa/CustomerService/pages/tariff.aspx. Your actual bill comes from Kahramaa and may include other charges, such as a deposit or a balance carried over.
Common questions
How is a Kahramaa bill worked out?
Kahramaa charges electricity and water in slabs. The first block of kWh or cubic metres in the month is charged at the lowest price, the next block at a higher price, and so on. Each slab is worked out on its own and the slabs are added up. A flat using 3,000 kWh and 25 m³ in a month pays QAR 350.00 for electricity and QAR 145.00 for water, QAR 495.00 in total.
Why is my Kahramaa bill so high in summer?
Air conditioning. From May to September an AC can run most of the day, and a villa with several split units can use two or three times its winter kWh. Because the tariff is in slabs, the extra kWh are also charged at the higher slab prices, so the bill rises faster than the usage.
Do flats and villas pay different Kahramaa rates?
No. Kahramaa lists flats and villas as separate residential categories but gives them the same tariff: electricity at QAR 0.11, 0.13, 0.18 and 0.26 per kWh across four slabs, and water at QAR 5.5, 7 and 10 per m³ across three. A villa usually pays more only because it uses more, which pushes it into the dearer slabs.
How many cubic metres is a gallon?
One US gallon is 0.003785 m³ and one UK (imperial) gallon is 0.004546 m³. So 1,000 US gallons is about 3.79 m³ and 1,000 litres is exactly 1 m³. Kahramaa bills water in cubic metres.
How much electricity does a 1.5 ton AC use?
A typical split unit uses about 1.3 kW of electricity per ton of cooling, so a 1.5 ton AC uses about 1.95 kW while its compressor runs. Running 14 hours a day in summer that is about 27.3 kWh a day, or 819 kWh over 30 days. Inverter units use less; old units more.
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