Specific calculators, planners, and explainers for jobs that usually get buried in forums.
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Welding gas bottle duration calculator
Estimate how long a shielding-gas bottle will last before you are down to swap pressure. Enter bottle size, pressure, flow rate, and duty cycle to get usable gas, continuous arc time, shift coverage, and refill-cost planning instantly in the browser.
Why this is useful
Gas bottles never seem to last as long as the label suggests because the label is not your usable shop time. You still need a reserve to keep coverage stable, your regulator flow is rarely the textbook number, and most jobs are not 100% arc-on from start to finish.
This page turns bottle specs into planning numbers you can actually use before a fabrication run, mobile job, or evening in the shop: torch-on time, approximate elapsed hours, how many 8-hour shifts a bottle covers, and what that gas is costing per hour.
Useful for
- Checking whether one bottle will cover a repair day, trackside job, or weekend fabrication session
- Comparing MIG and TIG flow settings against the same bottle stock
- Estimating when a bottle swap will interrupt a shift instead of discovering it halfway through a weld-out