LPG Gas Cylinder Calculator
How many days your LPG cylinder will last and what cooking gas costs you a month, from your cylinder size and how long you cook.
Add up all burners: two burners for an hour each is 2 hours.
A home burner on full flame uses about 0.15 to 0.25 kg an hour; a heater or big burner more.
A cylinder lasts
30 days
- Gas cost a month
- Rs 3,302
- Refills a year
- 12.4
- Price per kg
- Rs 271
- Cost of an hour on one burner
- Rs 54.24
Cooking 2 burner hours a day uses about 0.4 kg of gas, so a 11.8 kg cylinder lasts around 30 days and gas costs about Rs 3,302 a month.
How it's worked out
- Gas used a day
2 burner hours × 0.2 kg0.4 kg - Days a cylinder lasts
11.8 kg ÷ 0.4 kg a day29.5 days - Gas a month
0.4 kg × 30.44 days12.2 kg - Cost a month
12.2 kg × Rs 271 a kgRs 3,302
- Burners use less on a low flame, and more in winter when cylinders lose pressure. Have a leaking regulator or pipe fixed straight away: it wastes gas and is dangerous.
How it is worked out
Days = gas in cylinder (kg) ÷ (burner hours a day × kg an hour)
The monthly cost is the gas used in an average month (30.44 days) times the price per kg, which is the refill price divided by the cylinder size.
Ways to make a cylinder last longer
Cook with a lid on, use a pressure cooker for dals and meat, keep burners clean so the flame stays blue, and turn the flame down once food boils. A yellow, sooty flame wastes gas.
Safety
Keep the cylinder upright and ventilated, check the regulator and pipe for leaks with soapy water, and replace a cracked pipe straight away. If you smell gas, turn off the regulator, open windows and don't switch on lights.
Questions people ask
How long does an 11.8 kg cylinder last?
About 30 days for a home that cooks 2 burner hours a day on burners that use 0.2 kg an hour.
How long does a 14.2 kg cylinder last?
At the same 2 burner hours a day and 0.2 kg an hour, about 35 days.
How much gas does a burner use an hour?
A home burner on full flame uses about 0.15 to 0.25 kg of LPG an hour. Large burners and gas heaters use more; a low flame uses much less.
How do I count burner hours?
Add up the time each burner is on. Two burners used for an hour each is 2 burner hours.
About this calculator
Formula and rules last checked 9 November 2026Written and tested by the CalculatorDex teamReport a problem