The user who posted this question is doing something smarter than they realize. Asking how to turn 5 minutes into 0.25 isn't just a formatting question, it's the first step toward treating time as data that can actually be analyzed, aggregated, and connected across tables. That instinct to move from "5 minutes" to "0.25" is the difference between a static log and a living dataset. And the second part of their question, how to keep two tables in sync, is the real unlock.
Here is the plain truth: traditional spreadsheets make this harder than it needs to be. You have to remember that Excel stores time as a fraction of a day, so 5 minutes is 0.0034722, not 0.25. To get 0.25, you multiply by 24. Then you have to manually link tables with VLOOKUP or INDEX-MATCH, and if one table changes, the other breaks. This user is learning that friction firsthand. They are doing the right thing by asking, but the tool itself is working against them. The question isn't "how do I make this work in Excel?" The question is "why is this so hard?"
Our view is clear: time conversion and cross-table consistency should not require a forum post. An AI-native spreadsheet should understand that when you type "5 minutes," you likely mean 0.25 hours for billing, scheduling, or reporting. It should offer that conversion as a suggestion, not a formula. And when you have two tables that need to stay in sync, say, a project log and a payroll summary, the system should recognize the relationship and update both when one changes. That is not futuristic. That is what happens when the tool understands the work, not just the cell.
For this user, and for anyone who has ever stared at a formula bar wondering why their time data won't add up, the path forward is not to memorize more Excel functions. It is to demand a tool that meets you where you are. The question they posted is a signal of curiosity and willingness to learn. The answer should be a system that turns that curiosity into productivity, not another hour of trial and error. Start with the conversion: 5 minutes equals 0.25 hours. Then build from there, but build in a tool that does the connecting for you.