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THE FEUTEX TOOLKIT

Dual Card Redundant Photo Capacity

Estimate capacity when RAW and JPEG backups consume both cards.

Photography workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaFrames = Math.floor(Math.min(card_a,card_b)*1000*(1-reserve/100)/(raw+jpeg))

Made for real tasks

  • Estimate capacity when RAW and JPEG backups consume both cards.
  • Compare two scenarios by changing the inputs and rerunning the tool.
Explore step-by-step workflows →

Worked example

Inputs

Card a
64 GB
Card b
32 GB
Raw
30 MB
Jpeg
8 MB
Reserve
5 %

Expected results

Frames
800 frames

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Enter card a, card b, raw, jpeg, reserve.
  2. Use consistent units shown beside each input. Run the calculation and review the assumptions below.

Try this example

{
  "card_a": 64,
  "card_b": 32,
  "raw": 30,
  "jpeg": 8,
  "reserve": 5
}

Accuracy and scope

Both cards hold both file types; decimal GB and average file sizes. Not split-format recording.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.