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Shopping Calculators

Shopping

Compare package prices, or see which states look cheaper on official averages.

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Calculators

01Which Package Is Cheaper per Unit?See which package is cheaper per ounce, pound, or item, even if the labels use different units.Public data02Cheapest States for Electricity, Gas, and GroceriesCompare electricity, gasoline, and the grocery staples BLS splits by region. These are government averages, not store ads.Public data

Where the numbers come from

The public data behind these 2 calculators

Each source is held as a dated, hashed copy, and beside it is the specific wrong answer it produces when it is read carelessly.

Data sources used in Shopping
SourceCalculatorsThe mistake it prevents
BLS average prices1Treating a national average item price as this store’s shelf price.
EIA retail electricity1Using a state average rate in place of a tariff with tiers and fixed charges.
EIA weekly gasoline1Applying a regional average to a single station on a single day.

How these are built

Every calculator shows its work.

Each one names the formula it used, and the dated official source behind any figure it did not get from you.

How the numbers work →

Nearby topics

Other topics built on the same data

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