For spreadsheets and calculators, jump to these links:   Excel spreadsheet to calculate dose weights using a scale Songbird's spreadsheet, explanation is below in this post with download links to Excel files. You will need MS Excel or equivalent (e.g. Open Office) to use this.   Online spreadsheet for dose taper calculations   (Revised and updated October 2020) This is a Google Sheet from scallywag and Brassmonkey -- There are different tabs at the bottom: Stan