Worksheets & References:
I created some additional references as downloadable worksheets or links to google spreadsheets. I hope you will find them helpful and point you in the right direction of finding the best information for your project.
If you see that something is not functioning or you find the results are not accurate for your project, please let me know so I can address the issue or fix the bug.
If, on the other hand, you really like the calculator or you would like to suggest a improvement, please do let me know.
I cannot guarantee that these calculators will be accurate for all situations. Please use at your own discretion. They are also based on the accuracy and completeness of data entered.