The Calculator Toolkit for LabVIEW is a software add-on that includes standard, scientific, and programmer calculators and custom, silver, system, and modern UI styles that you can add to your VIs. You can create formulas by clicking the calculator buttons and selecting variables; and you can fully customize warning messages and VI closing scenarios. You can also prevent the creation of incorrect formulas by disabling buttons. The Calculator Toolkit for LabVIEW also includes the Calculate Formula VI to help you perform calculations using formulas that include vector variables. The Calculate Formula VI performs calculations on arrays and accepts string type formulas.