The Triangular Fuzzy Number Generator (TriGen) demonstrated in this paper is a software tool which is developed to generate symmetry Triangular Fuzzy Number (TFN). Preparing TFN manually for fuzzy system or analysis requires calculation effort. When the number of data increases, calculating TFN requires longer time to complete and may exposed to calculation error. Hence TriGen is developed to diminish computational difficulties and reduce processing time of calculating TFN. This tool provides a function for capturing input data and calculates the spread of TFN based on Percentage Error and Standard Deviation approaches. The tool also embeds the formulas that allow it to calculate the actual result. Technical problem solving is described by numerical examples.