Shelf Life Predictor
Predict food shelf life from water activity, temperature, pH, and preservative use.
Inputs
Results
Predicted Shelf Life (days)
22
Shelf Stable
No
Shelf Life (weeks)3.1
Shelf Life (months)0.7
C. botulinum RiskNo
Mold Growth RiskYes
Yeast Growth RiskNo
How to Use This Calculator
- Enter the water activity (aw) of your food product (0–1.0 scale).
- Set storage temperature in °F and pH level.
- Select the preservative level (none, mild natural, or strong chemical).
- The calculator shows predicted shelf life in days, weeks, and months; shelf-stable status; and risk levels for Clostridium botulinum, mold, and yeast.
- Combine aw below 0.85 with pH below 4.6 to achieve dual-barrier preservation and extend shelf life without refrigeration.
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