In this video we're going to work out how to calculate straight line depreciation. In this article, we'll teach you how to make a depreciation worksheet in Excel, from assembling column headers to entering formulas.You can calculate depreciation in any spreadsheet program. You could use any version of Excel on Windows or on Mac. Enter the name of the individual asset or group of assets being depreciated (e.g. Van, copier, computers). Create Templates: Set up a template for depreciation calculations that you can reuse, saving time for future assets. 1. Create a template as show below. Returns the depreciation of an asset for a specified period using the double-declining balance method or some other method you specify. I'll be showing you how to design an automated excel template that computes straight line depreciation.