The most reliable free tool is Vector's BLF2MDF (command line). For a GUI, use asammdf (Python GUI) or CANape (commercial).
If you have access to Vector hardware, CANape is the most reliable tool. convert blf to mf4 new
Vector Logging Converter: Specifically designed to combine raw log files with database information to generate signal-based MF4 files. The Short Answer The most reliable free tool
find . -name "*.blf" -print0 | parallel -0 mdf4 convert {} --dbc can.dbc --output ..mf4
A BLF file often contains raw CAN frames (ID + Data Bytes). An MF4 file usually contains physical values (Signals). Click Destination
The keyword "convert blf to mf4 new" suggests users are tired of old methods. Previously, you had to:
Note: This utility often defaults to MDF 3.3 (old). To get the "new" version, you must pass the flag: BLF2MF4.exe -mdf4 source.blf