ThermalGlassTool helps glass teams do daily math fast and right. Use the Furnace Efficiency Calculator to see how well your furnace runs and spot easy wins. Convert glass density or BTU to kWh in seconds so reports match. Turn pressure into stress to check safety, and estimate flame temperature to tune burners. Plan gas use with a simple forecast tool and switch volume to mass for quick batching. Set the best air-fuel ratio for stable heat and lower waste. Check heat loss through bricks to keep walls tight and save energy. Map a time-to-temperature ramp that your crew can follow without guesswork.