Choose an ACH file
Open a local .ach or .nacha file up to 2 MB.
Inspect ACH payment files locally.
NACHA File Viewer
Read fixed-width NACHA records and inspect their file, batch, entry and addenda structure in your browser.
Supports ordinary 94-character records with LF or CRLF. IAT entries and bank-specific rules are outside this version.
ACH File ViewerYOUR WORKSPACE
Your task
View ACH file
Choose a file to inspect it here.
Also with this file: Download CSV · Download Excel · Download JSON
Processed privately in your browserNo uploadNo signup
A simple workflow
Three steps. One less thing to do.
Review structure
Inspect 94-character records, batches, entries, addenda and exact control totals.
Export for review
Download entry CSV, four-sheet Excel or a hierarchical JSON file.
Made for the everyday
A useful part of your workflow.
File triage
See whether a saved ACH file has consistent structural and control records.
Entry review
Read exact routing, account, trace and cent values without spreadsheet rounding.
Addenda inspection
Review payment-related information alongside its parent entry.
Good to know
A few useful answers.
The details that matter before you use ACH File Viewer.
Does this certify an ACH file?
No. The viewer checks supported record structure and control consistency. It cannot determine bank acceptance or NACHA compliance.
Which records work?
Ordinary File Header, Batch Header, Entry Detail, Addenda, Batch Control and File Control records are supported. IAT and bank-specific extensions are withheld.
How are amounts handled?
Amounts remain exact integer cents. Routing, account and trace identifiers remain strings in the viewer and exports.
What do downloads contain?
CSV has one row per entry, Excel adds File, Batches and Addenda sheets, and JSON retains the parsed hierarchy.
Does my file leave this browser?
No. Parsing and exports run locally. Account numbers, names, amounts, traces and filenames are excluded from analytics.
What are the limits?
Printable ASCII ACH/NACHA files up to 2 MB and 20,000 records, 100 batches and 10,000 addenda are supported. Unsupported structures fail before export.