One of the best time investments I have made was sitting down with a postal scale and weighing all my gear. I am sure for some of you this sounds more like a chore, but once done it is extremely useful. Using Google Drive I was able to create a 'Spreadsheet' that enabled me to have access to a modular gear list anywhere. MS Excel will work exactly the same, yet I find that Google is easier to share with others. Below are some reasons having a gear list can be beneficial.
The gear list below is for a trip I recently took. It shows how I laid it out and you can see how the equations are in place to give the user the weight of each section/type of gear and then a master weight at the bottom. There is also space to include the weight of water and food. Using the below format allows me to get a accurate weight and monitor what I used on the trip.
Grand Canyon R2R2R in March