Check Cold-Storage Hours Left in a Power Cut — Free
When the power goes, the clock starts on every shelf in the house. Subtract the hours already lost and the hours still expected from each cold zone’s rated safe window, and see which zone runs out first.
The proof surface
Home-battery boards plan what a backup can power. This reads the other side of the same outage: how much safe-cold time each fridge or freezer zone still holds against the outage you expect to continue.
Why the flat version breaks
Treating the freezer as an extension of the fridge
A full chest freezer can hold a safe window many times longer than a fridge shelf, and mixing them hides the shelf that fails first.
Counting the outage from when it was reported
The food cares about hours since the power actually left your home.
Opening the doors to check
Every look spends safe-cold minutes; plan from the numbers instead.
How to work the outage margin docket
Fridge shelves, fridge door, and a chest freezer hold very different safe windows. A full chest freezer stays cold far longer than a half-empty fridge shelf — use the window printed for your appliance or the figure your food-safety authority publishes for that zone.
Read them off the clock at the moment you sit down to plan, not when the outage began.
Use the utility’s restoration estimate if one exists, or a conservative guess you would stake the food on. The figure applies to every zone in this run.
The docket totals nothing — it holds the smallest margin. A fridge shelf at six rated hours against one point five elapsed and two still expected keeps two point five hours of margin; the same shelf at four rated hours runs out before the power returns, so cook, move or discard on that shelf first.
What the outage margin docket replaces
| Question | Before | Visible working |
|---|---|---|
| Treating the freezer as an extension of the fridge | A full chest freezer can hold a safe window many times longer than a fridge shelf, and mixing them hides the shelf that fails first. | Enter hours already without power |
| Counting the outage from when it was reported | The food cares about hours since the power actually left your home. | Set the hours still expected |
| Opening the doors to check | Every look spends safe-cold minutes; plan from the numbers instead. | Act on the tightest margin |
A local arithmetic aid replaces hand calculation, not expert review. No paid AI service is needed.
Run it on the samples, right here
FIRST-LOAD
Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Outage margin arithmetic on the rated hours, clock and estimates you supply. Not a food-safety certification, insurance determination or public-health ruling; when food has been above the safe line, follow your food-safety authority or insurer’s guidance before keeping or claiming it.
Data note: Everything runs in this browser tab on the outage margin docket: your cold storage | rated safe hours | hours already without power stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Go deeper: the companion app files the same reading as a clerk's docket sheet
The article demo above runs without limits. The companion app keeps a local history, exports the rows as CSV, prints the outage margin docket reading, and holds your drafts on this device — one free run, then $ 4 one-time for the layer that keeps filing.
The outage margin docket reading is complete for free. The optional $4 layer adds print, row CSV and the last five local reading summaries; it does not add hidden answers. Checkout is not configured yet; the article demo remains unlimited.
Open the check cold-storage hours left in a power cut companionBoundary
Outage margin arithmetic on the rated hours, clock and estimates you supply. Not a food-safety certification, insurance determination or public-health ruling; when food has been above the safe line, follow your food-safety authority or insurer’s guidance before keeping or claiming it.
What this is built on
- Method: Use the utility’s restoration estimate if one exists, or a conservative guess you would stake the food on. The figure applies to every zone in this run.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-29, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Before: A full chest freezer can hold a safe window many times longer than a fridge shelf, and mixing them hides the shelf that fails first. After: the outage margin docket shows the working beside each named row so the reader can change the assumption and inspect the consequence.
Optional AI formatting, not calculation
For this outage margin docket, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a outage margin docket. Return plain rows only: cold storage | rated safe hours | hours already without power. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: cold storage | rated safe hours | hours already without power. No AI response is executed as code.