Camping cooler ice autonomy calculator

Calculate hours until protected ice reserve is reached and ice remaining after planned hours with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use hours until protected ice reserve is reached and ice remaining after planned hours to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Measured tests: condition label, melt kg per hour
Cool,0.25 Warm,0.5
Matching condition label
Warm
Starting ice mass (kg)
10
Protected remaining ice reserve (kg)
2
Planned elapsed hours
18
Hours until protected ice reserve is reached
16
Ice remaining after planned hours (kg)
1
Shortfall below protected reserve (kg)
1
Hours until modeled complete melt
20

Try another scenario

Measured tests: condition label, melt kg per hour
Cool,0.25 Warm,0.5
Matching condition label
Cool
Starting ice mass (kg)
10
Protected remaining ice reserve (kg)
2
Planned elapsed hours
18
Hours until protected ice reserve is reached
32
Ice remaining after planned hours (kg)
5.5
Shortfall below protected reserve (kg)
0
Hours until modeled complete melt
40
Calculation method

Calculation method

Hours until protected ice reserve is reached

(Initial ice−protected reserve) / supplied constant melt rate; No melt observed if rate is zero.

Ice remaining after planned hours (kg)

max(0,initial ice−rate×planned hours).

Shortfall below protected reserve (kg)

max(0,protected reserve−remaining ice).

Hours until modeled complete melt

Initial ice / supplied melt rate, or No melt observed at zero rate.

Symbols and units
a
Measured tests: condition label, melt kg per hour
b
Matching condition label
c
Starting ice mass (kg)
d
Protected remaining ice reserve (kg)
e
Planned elapsed hours

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • A constant-rate ice-mass scenario using your own measurements. Remaining ice does not establish a food-safe temperature or time; this tool does not predict cooler temperature or extrapolate ambient conditions.
Are these inputs private?

These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.

Further reading

CDC: food safety requires temperature-based checks, not an ice-mass model ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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