ISO Calculator
Calculate the ISO needed to achieve your desired exposure settings.
Current Settings
Target Settings
Required ISO
ISO 400
Nearest standard: ISO 400
Image Quality Impact
Noise LevelExcellent - Minimal noise
Exposure Change2.0 stops
Est. DR Loss~1.4 stops
Sensor Thresholds
Clean up toISO 3200
Acceptable up toISO 6400
Equivalent ISO by Sensor
Medium FormatISO 200
Full FrameISO 400
APS-CISO 600
Micro 4/3ISO 800
1" SensorISO 1080
SmartphoneISO 2240
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.