🛢️ Gas Consumption Calculator
Enter your flow rate, arc time, and cylinder details to see how much shielding gas a job burns — in cubic feet, in dollars, and as a fraction of a bottle.
Informational estimates only — verify against your gas supplier's figures; not professional engineering advice.
🧮 Meter Your Gas
🛢️ Gas used
What is a Gas Consumption Calculator?
Shielding gas is an invisible line item that surprises fabricators when the bottle runs dry mid-job. Because flow is set in cubic feet per hour, the maths is refreshingly simple — flow times arc-on hours gives the volume — but seeing it in dollars and in cylinders changes how you set the regulator and when you order the next fill.
The tool also exposes the false economy of cranking the flow up: double the CFH and you double the gas bill for no better weld, since over-flow just turns turbulent and drags air into the shield. Use it to right-size your flow, budget a production run, and know how many bottles a batch will drink before you start. It is a planning estimate — confirm prices and capacities with your supplier.
❓ Frequently Asked Questions
How is shielding gas consumption calculated?
Gas is measured in cubic feet per hour (CFH) on your regulator, so the volume used is simply the flow rate multiplied by the arc-on time in hours. Thirty-five CFH over two hours of arc time burns seventy cubic feet. Divide by your cylinder's capacity to see what fraction of a bottle that is.
What flow rate should I use?
Most MIG and TIG work runs somewhere around 15–25 CFH indoors, higher for larger cups or drafty conditions. More is not better: excess flow becomes turbulent, pulls air into the shield, and wastes gas. Set it to the lowest rate that keeps a clean, porosity-free bead.
How do I find my cylinder's capacity?
Cylinders are sized by the cubic feet of gas they hold — common shop bottles run from about 40 up to 250-plus cubic feet. It is stamped or labelled on the bottle, or listed on your supply agreement. Entering it lets the calculator tell you how many bottles a job or a batch will empty.
Is the cost figure exact?
It is an informational estimate. It prorates your cylinder cost across the gas actually used, but rental, hazmat, and delivery fees sit on top, and gas prices move. Verify against your gas supplier's figures; not professional engineering advice.