Shutter Angle Calculator
Convert shutter angle to shutter speed at any frame rate — the 180° rule and its exceptions, for cinema cameras that think in degrees.
A 180° shutter at 24 fps exposes each frame for 1/48 s — the classic film-look motion blur. Halve the angle (90°) and motion gets crisp and stuttery (Saving Private Ryan); open to 360° and it smears. Cinema cameras (ARRI, RED) speak in degrees while mirrorless cameras speak in 1/x seconds — this converts between the two so you can match cameras on a multicam shoot. At 60 fps, the 180° equivalent is 1/120 s, which is why high-frame-rate footage needs more light.
Rule / Formula
Convert shutter angle to shutter speed at any frame rate — the 180° rule and its exceptions, for cinema cameras that think in degrees.
About Shutter Angle Calculator
Convert shutter angle to shutter speed at any frame rate — the 180° rule and its exceptions, for cinema cameras that think in degrees. A 180° shutter at 24 fps exposes each frame for 1/48 s — the classic film-look motion blur. Halve the angle (90°) and motion gets crisp and stuttery (Saving Private Ryan); open to 360° and it smears. Cinema cameras (ARRI, RED) speak in degrees while mirrorless cameras speak in 1/x seconds — this converts between the two so you can match cameras on a multicam shoot. At 60 fps, the 180° equivalent is 1/120 s, which is why high-frame-rate footage needs more light.
How to use Shutter Angle Calculator
- 1Enter your values into the fields in Shutter Angle Calculator.
- 2The result and any pass/fail verdict update instantly as you type — no button to press.
- 3Check the substituted formula and worked example to see exactly how the result was derived.
- 4Copy or note the result for your spec, delivery or planning.
Why use Shutter Angle Calculator?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: 180° shutter convention (motion-picture camera practice).
- ✓Shows the governing formula and a worked example, so you can trust and check every result.
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does Shutter Angle Calculator do?+
Convert shutter angle to shutter speed at any frame rate — the 180° rule and its exceptions, for cinema cameras that think in degrees. A 180° shutter at 24 fps exposes each frame for 1/48 s — the classic film-look motion blur.
Is my data private?+
Yes. Shutter Angle Calculator runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is Shutter Angle Calculator based on?+
It follows 180° shutter convention (motion-picture camera practice); ARRI / RED shutter-angle documentation. Always confirm against the current official document, as specifications and rates can change.
What formula does it use?+
Shutter Angle Calculator uses: exposure time = angle ÷ (360 × fps); shutter speed = 1 ÷ exposure time. The tool shows this formula with your own numbers substituted so you can verify the result.
Is Shutter Angle Calculator free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
Embed Shutter Angle Calculator on your website
Want Shutter Angle Calculatoron your own site? Paste this snippet into any HTML page — it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/shutter-angle-calculator" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Shutter Angle Calculator — ToolJolt" loading="lazy"></iframe>Related Broadcast tools
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