Compare Two Excel Columns Online

Quickly find differences between two columns in Excel or Google Sheets. No formulas, no VLOOKUP needed.

See a real reconciliation, with sample data.

Preview sample data and download files

Match by the first column, even when rows change order. Each example has one added, one removed, one changed and one unchanged record.

Before
Customer IDNameEmailStatus
C001Alex Morganalex@example.comActive
C002Sam Leesam@example.comTrial
C003Jordan Kimjordan@example.comActive
After
Customer IDNameEmailStatus
C004Taylor Reedtaylor@example.comTrial
C002Sam Leesam@example.comActive
C001Alex Morganalex@example.comActive

Expected: 1 added · 1 removed · 1 changed · 1 unchanged

Fictional data. Loading an example replaces the current inputs. Select Compare rows below to run it.

What do you want to compare?

Paste one value per line, or upload a file and select the columns to compare.

Column A
Column B

A report you can actually check.

01

Choose a stable ID

Upload two CSV or Excel files. Match records using an ID or a combination of key columns.

02

Review what changed

Separate new, removed and changed records. Check before-and-after values and duplicate-key warnings.

03

Export the evidence

Download the CSV or Excel report. Keep your matching rules for the next comparison.

A comparison finds differences; it does not decide which source is correct. Resolve duplicate IDs and review matching rules before acting on a report.

How to Compare Excel Columns

1

Open Your Excel File

Open the Excel or Google Sheets file containing the columns you want to compare.

2

Copy Each Column

Select the first column, copy it (Ctrl+C), then paste it into List A. Repeat for the second column into List B.

3

Compare & Export

Click Compare. Download results as CSV to paste back into your spreadsheet.

Frequently Asked Questions

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