I used to set aside time every week to clean my spreadsheets by running helper formulas, scanning for red cells from conditional formatting, and fixing typos that had snuck in over the past few days.

Google Documents and Spreadsheets gets a little better with a new data validation option that will keep you and your collaborators from filling in the wrong types of data. Josh Lowensohn joined CNET ...

If you see the error “This value doesn’t match the data validation restrictions defined for this cell” when entering a value in an Excel cell, the solutions ...

Combine an Excel custom format with data validation and remove the pressure for input perfection from personnel by letting Excel do the work. Validating Microsoft Excel data is vital to prevent ...