Camera Field of View & Crop Factor Calculator

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About Camera Field of View & Crop Factor Calculator

Calculate horizontal and vertical optical field of view (FOV in degrees) and full-frame equivalent focal length across sensor formats. Enter Lens Focal Length, Sensor Format and Subject Distance and the tool works out Horizontal Field of View, Vertical Field of View and 35mm Equivalent Focal Length straight away. Everything runs in your browser, so your data never leaves your device.

How to use Camera Field of View & Crop Factor Calculator

1. Enter Lens Focal Length, Sensor Format and Subject Distance.
2. Change any value to see the result update instantly.
3. Read Horizontal Field of View, Vertical Field of View and 35mm Equivalent Focal Length in the results panel — copy or download what you need.

Key features

• Shows Horizontal Field of View (°)
• Shows Vertical Field of View (°)
• Shows 35mm Equivalent Focal Length (mm)
• 3 adjustable inputs, results update as you type
• No signup, no limits

Frequently asked questions

Is this calculation free and private?

Yes, 100% of calculations execute locally in your web browser. No inputs or personal data are stored or transmitted.

What does the Camera Field of View & Crop Factor Calculator give me?

It works out Horizontal Field of View, Vertical Field of View, 35mm Equivalent Focal Length and Visible Scene Width at Distance, updating live as you change the inputs.

What do I need to enter?

Just Lens Focal Length, Sensor Format and Subject Distance. Every field has a sensible default you can start from.

Is my data uploaded anywhere?

No. The calculation runs in your browser with JavaScript — nothing you type is sent to a server or stored.

Does it work on a phone?

Yes. The layout adapts to small screens and needs no app or signup.

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