Program to use for calibrating monitor

[BloodHK47]

Hey I was wondering if there was a program you can download online that can help calibrate your monitor for best settings. Or at least is there a good website that has a good guide for calibrating?

 

[MauveCloud]

I don't know a program to recommend, a lot of those are monitor-specific or require a hardware calibration device (colorimeter or spectrophotometer), but website is easy:
http://www.lagom.nl/lcd-test/