Free Film & Video Calculators
The everyday sums of camera, editorial and post, worked out in your browser and built on the CineMath app’s formulas. Free, no sign-up, and every result can be copied or shared as a link.
Editorial
Timecode, retiming, aspect ratios and film footage
- Timecode CalculatorAdd and subtract timecode, multiply or divide it, and convert between timecode and frames, drop-frame included.Open the calculator →
- Aspect Ratio CalculatorThe largest frame of any ratio inside a resolution, with the letterbox or pillarbox bars in pixels.Open the calculator →
- Speed Change CalculatorPlayback speed and running time when footage shot at one frame rate plays at another.Open the calculator →
- Film Footage to Time CalculatorRunning time of a roll of film, or the feet of stock for a runtime, from Super 8 to 15-perf IMAX.Open the calculator →
- Time-Lapse CalculatorThe intervalometer setting, frames to shoot and speed-up for an event, a clip length and a frame rate.Open the calculator →
Data/DIT
Storage, record time, bitrate, RAID and uploads
- Bitrate & File Size CalculatorFile size from bitrate and runtime, record time for a card or drive, or the bitrate that fits a target size.Open the calculator →
- Upload Time CalculatorHow long a file takes to upload at your connection speed, with a best-to-worst-case range.Open the calculator →
- RAID Capacity CalculatorUsable space and failures survived for RAID 0, 1, 5, 6 and 10, and the safest level that holds what you need.Open the calculator →
Camera
Focus, framing, lenses and exposure on set
- Depth of Field CalculatorNear and far focus limits, the hyperfocal distance, and where to focus and what stop to hold two subjects sharp.Open the calculator →
- Close Focus CalculatorMagnification, effective stop and light loss for extension tubes, and the new minimum focus with a diopter.Open the calculator →
- Field of View CalculatorHorizontal, vertical and diagonal angle of view, and the frame width and height at a distance. Anamorphic too.Open the calculator →
- Focal Length Match CalculatorThe lens that gives the same horizontal view on another sensor, and the crop factor between the two cameras.Open the calculator →
- Exposure CalculatorThe T-stop, shutter angle, ISO or ND filter that compensates for a change in stops, thirds included.Open the calculator →
- Anamorphic CalculatorDesqueezed aspect ratio and width for any squeeze and sensor, and the spherical focal length with the same horizontal view.Open the calculator →
More in the CineMath app
CineMath app calculators that aren’t on the web yet. The camera calculators, Storage/RAID and Time Lapse are new in version 1.3, coming soon to the App Store.