Is this Exposure Calculator free to use?

Yes, Exposure Calculator is 100% free to use online with no installation or account required.

How do I use the Exposure Calculator?

Simply enter your values into the required input fields and click calculate to view the results instantly.

Can I use Exposure Calculator on mobile devices?

Yes, the calculator is fully responsive and compatible with Android, iOS, Windows, macOS, and Linux web browsers.

Exposure Calculator — Free Online Tool

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Exposure Calculator

Calculate exposure value (EV) and relative camera settings

Formula: $\text{EV} = \log_2\left(\frac{N^2}{t}\right) - \log_2\left(\frac{\text{ISO}}{100}\right)$. Enter camera aperture ($N$), shutter speed ($t$ in seconds), and ISO below.

Camera Exposure Parameters

Aperture (f-stop, e.g., 2.8, 4, 8)

Shutter Speed (seconds, e.g., 0.004 for 1/250)

ISO Speed Rating

Calculation Results

⚠️ For photography reference and educational purposes only.

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Exposure Calculator

Calculation Results

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