LOGIC PRO WORKFLOW

How to Quantize MIDI in Logic Pro

Import the downloaded `.mid`, select its MIDI region, open the Region inspector, and choose a value from the Quantize pop-up menu. Logic Pro applies region quantization nondestructively, so keep the original region and compare a fine grid before trying a coarser one. Use the Piano Roll Editor to see the changed note positions.

Select: the imported MIDI region
Open: Region inspector
Choose: a Quantize grid
Check: the same passage in Piano Roll

Workflow from browser-generated MIDI file to Logic Pro Region inspector, quantize grid, and Piano Roll comparison — The browser creates the MIDI file; Logic Pro applies its own nondestructive region quantization after import.

CREATE THE IMPORT FILE

Make MIDI for the Logic Pro test

Download an unquantized baseline or choose a browser grid, then compare it with Logic Pro's region-level quantization.

INPUT MP3 / WAV / M4A / FLAC / OGG → OUTPUT .MID

Drop one audio file here

or click to choose audio from your device

Choose audioMP3, WAV, M4A, FLAC, or OGG · one file · up to 50 MB / 5 minutes

Or capture one clear melody with your microphone.

Your audio stays on your device. All processing happens in this browser. No file is uploaded to a server.

No sign-upOne file at a timeNo watermark

Stage	Action in Logic Pro	Observable check	Keep a reference
Import	Drag the downloaded `.mid` into the Tracks area and select its MIDI region.	The region appears on a software instrument track.	Duplicate the region before changing quantize settings.
Open inspector	Show the Region inspector for the selected MIDI region.	The Quantize pop-up belongs to the selected region.	Confirm the correct region is selected.
Choose grid	Start with a fine normal value such as 1/16, then compare with Off.	Note positions change relative to the selected grid.	Keep Off on the duplicated reference region.
Inspect notes	Open the Piano Roll Editor and view the same passage.	Logic displays the effect of the region's Quantize value.	Compare identical bars at the same project tempo.
Refine	Use Q-Strength or Q-Range when full snapping removes useful timing.	Notes move partly or selectively toward grid positions.	Write down each changed parameter.
Choose algorithm	Compare Classic and Smart Quantize when relative event placement matters.	Smart Quantize can preserve relative positions inside event groups.	Audition the same phrase before deciding.

Comparison between quantizing during browser MIDI export and nondestructive region quantization in Logic Pro — Do not change both stages at once when testing: isolate browser export timing or Logic Pro region quantization.

REGION INSPECTOR

Quantize the selected MIDI region

Apple's current Logic Pro guide places the Quantize pop-up in the Region inspector. The region's grid begins at the region start, so align the region deliberately before judging bar-relative timing.

NONDESTRUCTIVE

Return to the original timing

Logic Pro region quantization changes playback positions while retaining original note positions. Setting Quantize back to Off restores unquantized playback unless parameters are applied permanently.

CLASSIC OR SMART

Choose how events move

Classic Quantize moves notes toward the chosen grid. Smart Quantize analyzes nearby groups and can preserve relative event ordering, including related controller data.

PARTIAL CORRECTION

Use strength and range carefully

Q-Strength controls how far events move toward the grid. Q-Range determines which events are eligible based on their distance from grid positions. Change one parameter at a time.

QUICK ANSWERS

Logic Pro MIDI quantize questions

Where is MIDI quantize in Logic Pro?

Select the MIDI region, open the Region inspector, and choose a value from the Quantize pop-up menu.

Can I see the quantized positions?

Yes. Apple's guide says the selected region Quantize value affects how notes are displayed in MIDI editors, so inspect the same passage in the Piano Roll Editor.

Is Logic Pro region quantization permanent?

No. Region quantization is nondestructive until you deliberately apply region parameters permanently. Keep a duplicate reference and use Off to compare original playback timing.

What is the difference between Classic and Smart Quantize?

Classic Quantize moves notes toward grid positions. Smart Quantize analyzes event groups and preserves their relative order while moving the group toward the target grid.

Should I quantize in this browser and Logic Pro?

For a controlled test, change only one stage. Export with Quantize Off when testing Logic Pro's settings, or leave Logic Pro Off when evaluating the browser grid.

Download the Logic Pro quantize checklist (.csv)