Last week, we shared a few basic tips to help you master some of the calculations used in day-to-day operations. Understanding these and other functions and formulas is an integral part of the job, but working through the problems can be intimidating. Fortunately, there is a large bank of online tools and apps geared toward water and wastewater professionals that puts solutions literally at your fingertips. Of course, mobile technology is fast-moving and new tools are being released almost daily. Here are just a few of the ones available at no cost right now. Online tools From the Pennsylvania Department of Environmental Protection: Temperature Conversion Millions of Gallons Conversion Loadings Calculator Pounds of Chemical per Gallon Tank Volume Calculations Dry Chemical Calculation Removal Efficiency mL per Minute Conversion Food to Microorganism Calculator Metric Conversions From the Missouri Rural Water Association: Circular Break Around Pipe Hole in Pipe Rectangular Break Along Pipe Monthly Water Loss Annual Water Loss Average Well Drawdown and Specific Capacity Pipe Disinfection Tank Disinfection Well Casing Disinfection Solution Strength Mix Device apps From Georg Fischer AG: FlowCalc – Apple From Pipeflowcalculation.com: Pipe Diameter Calculator – Android Be sure to check back here next week for the last post in our operator math series. We’ll have resources to help you keep your calculation skills sharp.