Online Tool Store
ND Filter Calculator
Enter your base shutter speed and ND filter strength to calculate the adjusted exposure time. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Result
New time = base time × 2^stops
Example shown — enter your own values to recalculate.
How it works
- Enter your values into the fields above.
- The result updates to reflect your inputs.
- Use the result to plan or document your work.
Enter your base shutter speed and ND filter strength to calculate the adjusted exposure time. Runs entirely in your browser.
FAQ
Is my data uploaded anywhere?
No. ND Filter Calculator runs entirely in your browser — nothing is sent to a server.
Is this tool free to use?
Yes, ND Filter Calculator is completely free with no sign-up required.
How accurate is the result?
The calculation follows the standard formula for this type of estimate; always confirm against project-specific specs for critical work.
Can I use this on mobile?
Yes, the tool is fully responsive and works on any device with a modern browser.
How we compare
| Feature | Online Tool Store | Manual calculation | Spreadsheet templates |
|---|---|---|---|
| Instant result | ✓ | Slow, error-prone | ✓ |
| Free, no sign-up | ✓ | ✓ | Often requires download |
Spreadsheet templates can go deeper for repeated project tracking. ND Filter Calculator gives a quick, free result for a one-off calculation.