Professional Data Merging Tool

MERGE
EXCEL & CSV
IN SECONDS

The professional desktop tool for combining, cleaning and exporting spreadsheets. No cloud. No subscription. 100% offline.

Download Free Trial See All Features
5+Merge Types
∞No Row Limits
7 DaysFree Trial
0 Cloud100% Offline
SHEET MERGER PRO — FULL VERSION
3Files
4,821Rows
12Cols
24Dupes
MergeAuto-MapExport
CustomerAmountSource
Acme Corp$4,200q1.xlsx
TechStart$1,850q2.xlsx
GlobalTrade$7,600crm.csv
01
5 Merge Types
Append, Inner, Left, Right and Outer Join. SQL-style power, zero code required.
02
Smart Auto-Map
Detects matching columns with different names using a built-in synonym dictionary + fuzzy matching. Customer, Client, Buyer — unified automatically. You review every suggestion before applying.
03
Data Validation
Catches empty fields, bad formats, invalid emails before you export.
04
Column Statistics
Min, max, mean, null count, unique values. Instant data quality insight.
05
Split & Export
Export one file per unique column value. Fully automatic, no manual work.
06
Find & Replace
Replace values across your full dataset. Regex and case-sensitive supported.
07
Merge Presets
Save your entire workflow as a preset. Reload and run in one click.
08
100% Offline
No internet. No uploads. No cloud. Your data never leaves your machine.
09
Undo & Preview
Preview before and after every merge. Undo any operation instantly.
Demo Videos

SEE IT IN ACTION

Watch how Sheet Merger Pro handles real-world data merging tasks in minutes.

Video coming soon
Getting Started
Merging Excel Files in 2 Minutes
See how to combine multiple Excel and CSV files using Smart Auto-Map.
Video coming soon
Advanced Features
Data Validation & Split Export
Validate your data and automatically split results into separate files.
How It Works

FIVE STEPS TO CLEAN DATA

1
Add Files
Drop in Excel or CSV files, or scan an entire folder
2
Auto-Map
Unify column names across all files automatically
3
Set Merge
Append rows or join on a shared key column
4
Clean
Remove dupes, validate data, filter columns
5
Export
Save as Excel, CSV or split by column value
Pricing

TRY FREE. PAY ONCE.

No subscriptions. No per-seat fees. One honest price.

Free Trial
$0
7 days · No card needed
  • ✓Up to 3 files per merge
  • ✓Up to 100 rows export
  • ✓Basic merge types
  • ✓Preview & activity log
  • ✕Smart Auto-Map
  • ✕Data Validation
  • ✕Split & Export
  • ✕Merge Presets
Download Free Trial
MOST POPULAR
Annual License
$29
Per year · Billed once
  • ✓Unlimited files
  • ✓Unlimited row export
  • ✓All 5 merge types
  • ✓Smart Auto-Map
  • ✓Data Validation
  • ✓Split & Export by Column
  • ✓Merge Presets & Undo
  • ✓Email support
Buy Now — $29 / Year
Lifetime License
$79
One-time · Forever
  • ✓Everything in Annual
  • ✓Lifetime License
  • ✓Priority support
  • ✓One PC forever
  • ✓No renewal needed
  • ✓Instant key delivery
  • ✓Activation support
  • ✓Best long-term value
Buy Lifetime — $79

Secure payment via Gumroad · License key by email instantly · sheetmergerpro@gmail.com

Testimonials

TRUSTED BY DATA PROS

★★★★★

"I used to spend 2 hours every Monday merging quarterly reports. Sheet Merger Pro does it in under 5 minutes."

S
Sarah M.
Finance Analyst
★★★★★

"Our client data is sensitive. We cannot use cloud tools. Sheet Merger Pro is exactly what we needed."

R
Raj K.
Operations Manager
★★★★★

"Data Validation caught 340 bad emails before we sent a campaign. Paid for the tool several times over."

L
Lisa T.
Marketing Director
FAQ

QUICK ANSWERS

Do I need Python installed?
No. Sheet Merger Pro is a standalone .exe. Download, double-click, done.
Is my data uploaded anywhere?
Never. Everything runs on your machine. Nothing is ever sent to any server.
What file types are supported?
.xlsx, .xls, .csv and .tsv. Mix and match in the same merge.
How does the license key work?
After purchase a key is emailed instantly. Enter it with your email in the activation screen.
Can I use it on multiple computers?
One license, one computer. Email us if you need to transfer to a new machine.
What happens when my trial expires?
The app shows an activation screen. Your data is safe. Purchase a license to continue.

STOP COPY-PASTING.
START MERGING.

Try Sheet Merger Pro free for 7 days. No credit card required.

Download Free TrialBuy Full Version — $29

Windows 10 / 11 · No installation · Instant download