It would take on the order of many weeks of nonstop baking , even with 52 ovens, but the exact time depends heavily on batch size and recipe assumptions.

Below is a clear way to estimate it (and you can tweak the numbers for your own recipe).

Basic assumptions

To turn “6 million cookies in 52 ovens” into math, some reasonable assumptions help.

  • Standard cookie:
    • Bakes at about 350°F / 177°C for 10–12 minutes per tray.
* Add ~3–5 minutes per tray for loading/unloading and swapping trays.
  • One tray (per oven) holds:
    • About 24 cookies for a typical home/restaurant sheet.
  • Ovens:
    • All 52 ovens run 24/7 with no breaks.
    • Each oven handles one tray at a time (simplest baseline).

You can adjust any of these and redo the math.

Step‑by‑step calculation

1. Cookies per tray

  • 1 tray = 24 cookies
  • Batches needed:

6,000,000 cookies24 cookies/tray=250,000 trays\frac{6{,}000{,}000\text{ cookies}}{24\text{ cookies/tray}}=250{,}000\text{ trays}24 cookies/tray6,000,000 cookies​=250,000 trays

So you must bake 250,000 trays in total.

2. Time per tray

Take a realistic per‑tray cycle:

  • Baking time ≈ 10–12 minutes.
  • Handling (in/out, rotating, etc.) ≈ 3–5 minutes.

A simple approximate cycle: 15 minutes per tray. So each oven can finish:

  • 60 minutes / 15 minutes ≈ 4 trays per hour per oven

3. Total trays per hour with 52 ovens

If every oven does 4 trays per hour:

  • 4 trays/hour/oven × 52 ovens = 208 trays per hour

At 24 cookies per tray:

  • 208 trays × 24 cookies = 4,992 cookies per hour

Call it roughly 5,000 cookies per hour.

4. Time to hit 6 million cookies

Now divide total cookies by cookies per hour:

6,000,000 cookies4,992 cookies/hour≈1,202 hours\frac{6{,}000{,}000\text{ cookies}}{4{,}992\text{ cookies/hour}}\approx 1{,}202\text{ hours}4,992 cookies/hour6,000,000 cookies​≈1,202 hours

Convert hours to days:

  • 1,202 hours á 24 ≈ 50 days

So under these assumptions, it would take around 50 days of nonstop baking with 52 ovens.

How this number can change

Changing any assumption moves the result:

  • Bigger trays (say 36 cookies each)
    • Fewer trays needed, so time drops.
  • Shorter cycles (fast loading, multiple trays per oven if it’s a rack oven)
    • More trays/hour → time drops a lot.
  • Inefficiencies (cooldowns, staff breaks, mixing downtime, oven preheats)
    • Real‑world time could easily stretch past two months.

As a rough rule:

  • If you double cookies per tray or trays per hour, you halve the total time.

Fun “forum style” version

If you have 52 ovens going full blast, each cranking out a tray of 24 cookies every 15 minutes, you’re baking about 5,000 cookies an hour. At that pace, you’d need roughly 1,200 hours—about 7 weeks—of nonstop baking to hit 6 million cookies. No breaks, no burnt batches, no oven issues… just an absolutely ridiculous cookie factory running day and night.

TL;DR:
With standard assumptions (24 cookies per tray, 15‑minute tray cycle, 52 ovens running 24/7), baking 6 million cookies would take about 1,200 hours , or roughly 50 days of continuous operation.

Information gathered from public forums or data available on the internet and portrayed here.