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Which Size Is Cheaper?

“Is the big box actually better value than the small one?”

The real price per kilo across every size on the shelf, with multipacks and offers worked out properly — and the question the shelf label never asks, which is whether you'll actually finish the big one.

  • Grams, kilos, ounces, pounds, millilitres, litres and 'each', all compared
  • Buy-one-get-one, three-for-two, percent off and N-for-a-fixed-price all handled
  • Refuses to compare grams against millilitres, because they aren't the same thing
  • Say how much goes in the bin and the ranking changes — often completely
  • Points out when the biggest one isn't the cheapest, which is more often than you'd think
Builtgoing on sale shortly
Tell me when I can buy it
  • This one is finished and tested — not on the build list
  • It will be $9, same as every other tool
  • One email when it goes up, no list, no spam
How it works

Three steps, then you're done

Type in what's on the shelf

Price, size and any offer.

Say whether you'll use it all

This is where bulk buys stop being bargains.

Buy the one at the top

With the percentage it saves you.

Nothing you type ever leaves your computer. There is no account, no login and no server. Switch your wi-fi off and it still works — that's not a promise about our policy, it's just how the tool is built.

Questions

Do I need to install anything?

No. Each tool is a single file. Double-click it and it opens in Chrome, Edge, Safari or Firefox — whichever you already have. No account, no password, no software.

Does anything get uploaded?

No. Your numbers and files never leave your computer — the tools have no way to send them and no internet connection is needed to run them. You can switch your wi-fi off and they still work.

I'm not good with computers. Is this too hard?

The first thing every tool does is walk you through it in five short screens with pictures. Then there's a button that fills it with example numbers so you can watch it work before touching anything.

Will it work on my phone?

Yes. Email yourself the file and open the attachment, or drop the files in iCloud Drive, Dropbox or Google Drive and open them from there — then they're on every device you own.

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