Servings vs calories: why "1-month supply" can mislead
Emergency food is usually sold by the number of servings or days. Neither tells you how much food you're actually getting. Calories do.
A "serving" isn't a fixed amount
There's no standard serving size for emergency food. Two buckets that both say "120 servings" can hold very different amounts of food:
| Bucket | Servings | kcal per serving | Total kcal | $ per 2,000 kcal |
|---|---|---|---|---|
| ReadyWise 120 Serving Emergency Food Supply | 120 | 205 | 24,540 | $26.89 |
| Legacy 120 Serving Breakfast Bucket | 120 | 437 | 52,440 | $12.59 |
Same serving count, but one has about 2.1× the calories of the other. Comparing by servings would make them look equal.
"30 days" doesn't always mean 2,000 calories a day
When a kit is sold as a number of days, the question is how many calories a day you get. Some examples, using each brand's own figures:
- Augason Farms 30-Day 1-Person Emergency Food Supply Kit: 38,700 calories over 30 days is 1,290 calories a day. The brand states this figure itself.
- 4Patriots 4-Week Emergency Survival Food Kit: 36,520 calories over 28 days is 1,304 calories a day, which the product page also shows.
Neither brand hides these numbers, but they're easy to miss. A kit planned around fewer calories than you'd normally eat lasts its advertised days only if you eat less. At 2,000 calories a day, the Augason kit lasts 19.4 days, not 30.
Product pages sometimes disagree with themselves
- Valley Food Storage 72-Hour Emergency Kit: on November 8, 2026, the description said 1,800 calories per day, while the spec table on the same page listed 5,030 total calories and 1,677 per day.
- A ReadyWise bundle (Wise 4-Week Supply, Milk & 72-Hour Kit Bundle) listed 75,890 total calories as "231 days of food at 2,000 calories per day". At 2,000 a day, 75,890 calories is about 38 days. This was on the product page on November 8, 2026.
These look like simple mistakes, not deliberate tricks, but they show why it's worth doing the math yourself.
How to compare any kit in 10 seconds
- Find the total calories. If only "calories per serving" is listed, multiply by the number of servings.
- Divide the price by total calories and multiply by 2,000. That's the cost of one adult's food for one day.
- Divide total calories by 2,000 to get days of food for one person.
Or skip the math: the rankings do it for every kit we track.
What calories don't tell you
Calories measure how much food there is, not how good it is. They don't cover taste, protein, nutrients, how much water a meal needs, or shelf life. Use cost per calorie to narrow the field, then pick based on what you'll actually eat. See our methodology for exactly what we measure.