ND Filter Calculator
Find out which ND filter you need to achieve your desired long exposure.
Settings
Recommended ND Filter
ND32000 (4.5)
14 stops needed
Calculation Details
Base Exposure (no filter)1/512s
Target Exposure30s
Stops Required13.9
ND NumberND16384
ND Density4.2
Filter Stacking Options
ND1000 (10 stops) + ND16 (4 stops)
ND Filter Reference
FilterStopsDensity
ND210.3
ND420.6
ND830.9
ND6461.8
ND1000103.0
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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.