Convert, create, validate, inspect and repair NACHA-formatted ACH files entirely in your browser.
Trusted and used by 1,000+ US businesses
Upload payments, map your columns, enter bank settings and download a validated NACHA file.
Convert a CSV payment file into a bank-ready NACHA-formatted ACH file.
Convert an Excel workbook into a validated ACH/NACHA file.
Open an ACH file and export its entries to CSV.
Convert ACH/NACHA entries into an Excel workbook.
Check structure, routing numbers, hashes, totals, trace numbers and control records.
Open and inspect every batch, entry, addenda and raw NACHA record.
Build a PPD or CCD ACH file without a spreadsheet.
Edit ACH entries and rebuild all control totals safely.
Customer feedback
Feedback from payroll, treasury, accounting, and payment teams.
“Converting our payment spreadsheet into an ACH file is much easier now. We can import a CSV or Excel file, map the columns, review the entries, and generate the NACHA file without changing the spreadsheet workflow our team already uses.”
Rachel M.
Payroll Operations Manager
Used: CSV/Excel to ACH
“The validator makes it much easier to find problems before we send a file. It checks the file structure, routing numbers, entry hash, control totals, and trace numbers, then shows us where the errors are instead of leaving us to inspect every record manually.”
Daniel K.
Treasury Analyst
Used: ACH Validation
“Being able to open and edit an ACH file has been very useful when we need to correct a small issue. We can inspect the records, update the affected fields, and verify the totals without rebuilding the entire file from the original source.”
Melissa T.
Accounting Systems Manager
Used: View, Edit, and Repair
“The browser-based processing was an important consideration for us. Our original bank data stays on the local device instead of being uploaded for processing, so we can use the conversion and validation tools while keeping sensitive payment files within our own environment.”
Jason R.
Financial Operations Director
Used: Local Browser Processing
“We regularly need to compare ACH files, combine batches, split larger files, and mask sensitive information. Having those tools together in one place makes routine file work faster and reduces the number of separate utilities our operations team has to use.”
Amanda L.
Payment Operations Specialist
Used: Compare, Merge, Split, and Mask
ACH, CSV and Excel processing runs locally in your browser.
The first release has no subscriptions, row-based paywalls or watermarks.
Hashes, counts, debit and credit totals, block count and padding come from one shared engine.
Inspect, compare, mask, repair, merge, split and analyze operational ACH files.
Repair padding, line endings, hashes, counts and control totals.
Compare two ACH files while ignoring routine creation metadata.
Create a structurally valid test copy with sensitive data removed.
Extract reusable company and bank setup from an existing ACH file.
Add or remove an offset entry for bank-specific balanced file requirements.
Merge batches from multiple ACH files and rebuild file controls.
Split a multi-batch ACH file into separate validated files.
Review and edit payment-related addenda information.
Create zero-dollar prenotification entries from an ACH file.
Decode Return addenda and export a readable exception report.
Read NOC codes and corrected account information.
Create a reviewable reversal file from the original ACH instructions.
Create an account-verification micro-entry file for review.
Generate a valid fictitious ACH file for testing and learning.
Learn the 94-character record structure, hierarchy, SEC codes and control totals.
Calculate batch counts, entry counts, hashes, debits and credits from an ACH file.
Recalculate and verify ACH batch and file control values.
Validate a nine-digit ABA routing number checksum locally in your browser.
Choose the appropriate Standard Entry Class before generating a production ACH batch.
An ACH file is a fixed-width text file used to submit batches of US bank-account payments. Each record is exactly 94 characters. The file contains a File Header, one or more batches, Entry and optional Addenda records, Batch Controls, a File Control and padding. This site creates and analyzes files; your bank or ACH processor is responsible for transmitting and processing payments.
