FixPrtalDev ToolsHome

FIX Dev Tools

Free, stateless utilities for FIX protocol development. No sign-in required.

Decode & inspect

FIX Decoder

Decode a single raw FIX message field by field, or paste a whole engine log to triage every message inside it. FIX 4.x and 5.0 SP2.

FIX Timestamp Converter

Parse FIX UTC timestamps (UTCTimestamp, UTCDateOnly, UTCTimeOnly) to human-readable time, or build a FIX timestamp from a date and time.

FIX Order State Explorer

Map the FIX order lifecycle (OrdStatus / ExecType) and validate a run of ExecutionReports for illegal transitions.

FIX Message Builder

Compose a FIX message field by field; BodyLength and CheckSum are computed for you.

Reference

FIX Reference

Browse standard FIX tags and messages across FIX 4.x and 5.0 SP2, or load your own QuickFIX/N dictionary.

FIX Version Diff

Compare tag and message availability across FIX protocol versions.

Validate

FIX Checksum Calculator

Calculate or verify the FIX trailer tag 10 checksum for a raw message.

FIXatdl Inspector

Paste or upload a broker's FIXatdl strategies file to inspect its form, state rules, XML, and FIX preview.

QuickFIX/N Config

Validate a QuickFIX/N or QuickFIX/J session configuration file for common errors, or generate a new one from a form.

FIX Session Auditor

Paste a session log to find sequence gaps, duplicates, bad gap fills, and heartbeat problems.