A powerful disk monitoring tool that gives you full visibility into your storage health. Use real-time S.M.A.R.T. analysis to avoid data loss and extend drive life.
Trusted by over 5 million users worldwide.
What is CrystalDiskInfo?
CrystalDiskInfo is a comprehensive HDD/SSD utility that supports S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology). Open-source, lightweight, and built to give you complete visibility into your storage device's condition.
Monitor fleets of workstations and servers to predict drive failures before they cause data loss.
Keep your gaming rig or workstation at peak performance by monitoring NVMe SSD temperatures.
Verify storage integrity and performance when building I/O intensive applications.
Key Features
Discover the tools that make CrystalDiskInfo the standard for drive health monitoring.
Advanced control over Automatic Acoustic Management and Advanced Power Management to balance noise and performance.
Get email notifications when drive health drops or temperatures exceed safe limits for 24/7 monitoring.
Overview of firmware, serial numbers, interface details, and transfer modes for all connected drives.
Visual historical trends of S.M.A.R.T. attributes so you can track degradation over time.
Runs in the system tray with customizable alarms to warn you of critical status changes.
Deep dive into raw S.M.A.R.T. values like Read Error Rate, Power-On Hours, and Reallocated Sector Count.
Stay ahead of failures with S.M.A.R.T. diagnostics. CrystalDiskInfo reads critical attributes from your HDDs and SSDs so you can act before data is at risk.
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View temperature trends and health graphs in one place. Spot overheating and degrading drives quickly.
Tweak AAM and APM for a balance between quiet operation and performance on supported drives.
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Screenshots Gallery
Click any image to view full size.
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More system utilities for performance testing and benchmarking.
Disk Benchmark
Measure sequential and random read/write speeds of your storage devices with this straightforward benchmark tool.
Comprehensive Benchmark
Why Choose Us
See how our system monitor compares to other disk utility tools.
| Feature | CrystalDiskInfo | Hard Disk Sentinel | HD Tune Pro | HDDScan |
|---|---|---|---|---|
| Price / License | Free (Open Source) | Paid (~$30) | Paid (~$35) | Free |
| Primary Focus | SMART Monitoring | Repair & Enterprise | Benchmarking | Diagnostics |
| Interface | Modern / Anime | Industrial | Dated | Simple |
| Surface Scan | No | Yes (Advanced) | Yes (Basic) | Yes (Good) |
| Real-time Alerts | Yes (Tray/Sound) | Yes | Limited | No |
* Recommendation: Use CrystalDiskInfo for continuous drive health monitoring; use another tool if you need deep surface repair.
Multiple themes to match your style. All editions are 100% free.
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Classic lightweight design.
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Aoi character theme.
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Shizuku character theme.
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Kurei Kei character theme.
Trusted by millions. Here's what the community says.
Joseph Marketer
Jan 9, 2026
"Detected my SSD speeds instantly. Faster than other tools. Solid 4.5/5."
Alex409
Sep 9, 2025
"Simple, effective, does exactly what it says. Approved."
PaulTemps667
Aug 6, 2025
"Must-have for tech enthusiasts. Accurate SMART data, predicts failures. Lightweight and free."
Tanim MIUI
Apr 16, 2025
"Fantastic utility! Works perfectly."
CairoRipper824
Jan 31, 2025
"Smart design, incredibly easy to use. Thanks!"
SteveAce
Jan 2, 2025
"Essential for every PC user. Extremely useful."
Lyndos
Nov 26, 2024
"Easiest way to monitor SMART status."
MJA Tanim
Oct 10, 2024
"Simple approach, highly effective results."
Michael007
Sep 3, 2024
"Worked out of the box. Auto-detected all my drives."
MSmith935
Aug 27, 2024
"Lightweight but powerful. Saved me from data loss."
Joseph Marketer
Jan 9, 2026
"Detected my SSD speeds instantly. Solid 4.5/5."
Alex409
Sep 9, 2025
"Simple, effective. Approved."
PaulTemps667
Aug 6, 2025
"Must-have. Accurate SMART, predicts failures. Free."
Tanim MIUI
Apr 16, 2025
"Fantastic! Works perfectly."
CairoRipper824
Jan 31, 2025
"Smart design, easy to use."
Common questions about drive health, compatibility, and usage.