Shutter Angle Calculator
Fill in the values and the answer updates as you type.
How the Shutter Angle Calculator works
Shutter speed = shutter angle ÷ (360 × frame rate). A 180° shutter exposes each frame for half of the frame time and is the film standard, giving natural-looking motion. Smaller angles look crisper and choppier, and larger angles look smoother and blurrier. Cine cameras use angles, while stills cameras use speeds, so this tool bridges the two. Example: At 24 fps, a 180° shutter equals 1/48 s, which is 20.8 ms of exposure per frame.
Inputs and results
The Shutter Angle Calculator takes 2 inputs and gives 3 results.
What you enter
- Frame rate (fps) — starts at 24.
- Shutter angle (°) — starts at 180.
What you get
- Shutter speed
- Exposure per frame (ms)
- Share of frame time exposed
Example: Shutter Angle Calculator with the starting values
With frame rate 24 fps and shutter angle 180 °, the calculator returns:
| Shutter speed | 1/48 s |
|---|---|
| Exposure per frame (ms) | 20.8 |
| Share of frame time exposed | 50% |
Change any value above and the results update straight away.
Shutter Angle Calculator FAQ
How do I use the Shutter Angle Calculator?
Enter frame rate and shutter angle in the fields, then read shutter speed, exposure per frame (ms) and share of frame time exposed in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Shutter Angle Calculator calculate?
Convert between shutter angle, frame rate, and shutter speed. It returns shutter speed, exposure per frame (ms) and share of frame time exposed from the 2 values you provide.
What values does the Shutter Angle Calculator start with?
It opens with frame rate 24 fps and shutter angle 180 ° so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Shutter Angle Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Shutter Angle Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.