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Which size is actually the better dealGrocery Unit Price Calculator

Compare two sizes of the same thing and see the real price per ounce, pound, litre or count, plus what the cheaper one saves you over a year.

Runs in your browser. Nothing to install. Save the result or embed it on your site.

Illustration for the Grocery Unit Price Calculator: a converter mark on a home and family background in The LeadFlow Pro colours.
Working toolUse it before you book anything.

What to convert

The conversion

Cheaper by 12.7% per ounce: Option B
Option B
Cheaper by 12.7% per ounce
$0.31 against $0.36 per ounce

Option A works out at $0.36 per ounce and option B at $0.31 per ounce. Option B is the better buy, by $0.05 on every ounce.

$0.36
Option A per ounce
$0.31
Option B per ounce
$70
Saved per year
buying 4 a month
$0.05
Difference per ounce
Price per ounce
Option A (12 ounces)$0.36
Option B (32 ounces)$0.31

Option B wins. Over a year that is $70 on this one item, as long as you use it before it spoils.

Only compare like with like. If one label is in pounds and the other in ounces, convert first: one pound is 16 ounces.

Runs in your browser. Nothing you type is sent anywhere.

What this tool actually does for you

Who it is for

Anyone doing the weekly shop, especially for a family, where the bigger box is not always cheaper.

The problem it points at

The big one looks like the deal and sometimes it is not. Shelf labels use different units, some stores do not print unit prices at all, and doing it in your head in the aisle is how you get it wrong.

What you walk away with

The real price per unit for both, which one wins, and what the difference adds up to over a year.

How to use it

Enter what you have and read off what it becomes.

  1. Enter the size and price of the first option.
  2. Enter the size and price of the second.
  3. Put in how often you buy it to see the yearly difference.
Run it now

Questions people ask

Do the two sizes have to use the same unit?

Yes. Compare ounces to ounces, or pounds to pounds. If one label is in ounces and the other in pounds, convert first: one pound is 16 ounces.

Is the bigger size always cheaper per unit?

No, and that is the point. Multi-packs and family sizes are often priced above the smaller item per unit, because most people assume they are not.

Put this tool on your own website

Free forever. I host it. You keep it.

This is a real lead magnet you can run on your own site tonight. Somebody lands on your page, plays with the numbers, sees what their problem costs, and now they are on your website instead of a competitor's. Costs you nothing, and I keep it working.

  1. Scroll up and press Put this tool on my website. The code appears right there, no form.
  2. Copy the one line you get.
  3. In your website editor, add an Embed, HTML or Custom Code block on whatever page you want it on.
  4. Paste it in, save, publish.
  5. Check it on your phone, then send people to that page.

Works on

WordPress, Wix, Squarespace, Shopify, GoDaddy, Webflow, Duda, HubSpot, ClickFunnels, or plain HTML. Anywhere that takes an embed code.

What it costs you

Nothing. No monthly fee, no expiring trial, no watermark you have to pay to remove. If you get stuck putting it in, text me at (903) 500-8898 and I will help you place it.

While you are here

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