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Data Cleaning

Find and fix invoices where dates are stored as text or formatted inconsistently so payment aging and sorting are corr…

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See the prompt↓More clean workflows

The same job, four prompts

do it · improve it · decide · become
AExecute — “help me do it”Find and fix invoices where dates are stored as text or formatted inconsistently so payment…+
Find and fix invoices where dates are stored as text or formatted inconsistently so payment aging and sorting are correct across the AP register.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.
BImprove — “do it better”Standardize dates for the reviewer: convert text dates to true date values, detect rows with…+
Standardize dates for the reviewer: convert text dates to true date values, detect rows with ambiguous formats, list corrected examples, and flag invoices with year values outside the expected range for AP to confirm.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed.

How to do it

the tool · the steps · what to avoid
The tool
Data Tools

Excel's Data Tools help you clean, standardize, split, and transform your data for better analysis and quality.

  1. 1

    Select a cell within your data range.

    Best practiceAvoid creating multiple data tables within a single spreadsheet to prevent confusion for analysis programs and humans.

  2. 2

    On the Home tab, select the Analyze Data button.

  3. 3

    Review the insights and visualizations provided by Analyze Data.

  4. 4

    To access advanced tools, go to File > Options > Customize Ribbon.

  5. 5

    Check the Developer box and select OK.

  6. 6

    On the Developer tab, click Add-Ins.

  7. 7

    Select the Analysis ToolPak check box and then select OK.

    NoteThe Analysis ToolPak provides complex data analysis functions.

  8. 8

    To import external data, go to the Data tab.

  9. 9

    In the Get & Transform Data section, select Get Data.

  10. 10

    Choose your data source and follow the prompts to import.

  11. 11

    Save your workbook to apply all changes.

Organize your data with clear rows and columns before using Data Tools to ensure accurate analysis.

Many Excel Data Tools functions can be automated using VBA macros or integrated with Power Query for repeatable data transformations.

Glossary

words on this page
Get & Transform DataA powerful feature set for connecting to, cleaning, and shaping data from various sources.ExampleYou can combine sales data from two different databases and clean it up for analysis.
Analysis ToolPakAn Excel add-in providing data analysis tools for financial, statistical, and engineering data.ExampleUsing the Analysis ToolPak, you can quickly run a regression analysis on your sales data.
Customize RibbonPersonalize the Ribbon by adding, removing, or reordering tabs and commands.ExampleYou customize the Ribbon to add your most frequently used formatting commands to a new tab.
Data ToolsA group of features on the Data tab for managing and analyzing data within cells.ExampleYou use Data Tools to remove duplicate entries from your customer list.
Get DataConnect to external data sources to import information directly into your Excel workbook.ExampleYou can import customer information directly from a website into your spreadsheet.

The real tasks

8 of them
Find and fix invoices where dates are text or formatted inconsistently so payment aging is correct.
Clean up imported supplier price lists so unit rates are numeric and comparable across vendors.
Detect and remove exact duplicate catalogue entries so the collection counts and locations are accurate.
Clean and reshape an exported catalog before import into the public database so fields map correctly.
Clean up subcontractor contact lists I get from different suppliers so every phone and email is in a consistent column.
Trim stray leading and trailing spaces from imported copy so spelling and lookups don’t fail.
Clean incoming ad platform exports so all campaign names, dates and cost columns match our internal naming before analysis.
Clean incoming test reports and measurement logs from the prototype shop so they merge into our analysis without missing values or stray text.

Who does this

10 roles
Office ManagerConstruction ManagerDigital Campaign ManagerLegal AdvisorPMO AnalystUrban PlannerArchivistAccounts Payable ClerkArchitectCopy Editor

Questions people ask

honest answers

Because you rarely think 'I want the redaction tool'. You think 'I have to share this without leaking the client's details'. Start from the need, and the feature finds you.

Real. Every job here was drawn from what people in real roles were actually seen doing in Excel — not a feature checklist.

No. Each page gives you a ready prompt you can paste into an AI assistant, plus the plain steps to do it yourself. Start with either — the goal is the finished job, not the tool.