Shutter Angle Calculator

Shutter speed in seconds equals the shutter angle divided by 360 times the frame rate. At 24 fps a 180 degree angle gives 180 over 8640, which is 1/48 of a second. Going the other way, angle equals 360 times frame rate divided by the speed denominator.

Setting the shutter angle to 180 degrees exposes each frame for about half its duration, which produces motion blur most viewers find natural and cinematic. It is the default starting point for narrative film.

Because the frame is shorter. A 180 degree angle is always half the frame time, so at 24 fps that is 1/48 s but at 60 fps it is 1/120 s. The blur character stays the same even though the number changes.

Angle stays constant across frame rates, so a 180 degree look is consistent whether you shoot 24 or 60 fps. The matching shutter speed changes with the frame rate, but the motion blur feel does not.

A smaller angle, such as 90 degrees, means a faster shutter and less motion blur, giving a sharper, more staccato look often used for action and fast pans. A larger angle past 180 adds blur and a dreamier feel.

Yes. Enter any denominator in the Shutter speed 1/ field and the tool computes the exact matching angle, which may be a decimal. For instance 25 fps with 1/50 s returns 180 degrees, while other combinations give fractional angles.

Yes. It computes the ideal 1/X second value and rounds the display to two decimals. On a real camera you would pick the nearest available shutter speed, which is normally very close and visually identical.

The panel repeats the angle in degrees, the shutter speed as 1/X s, and the same exposure written as a plain decimal in seconds, so you can match whichever field your camera menu uses.

No. The conversion is a small formula that runs in your browser, so the frame rate, angle and speed you enter stay local and nothing is uploaded.