A photo (by Fábio Alves on Unsplash) of several open sandwiches

How it works

When you’re planning a kid’s birthday party, a big picnic (or any occasion requiring multiple rounds of sandwiches) the last thing you need is mental arithmetic to work out how many slices of bread (and therefore loaves) you need.

So we made this calculator.

If you’re interested in bread, sandwiches and saving money you might want to give our post investigating: Are bread makers worth it?

It’s based on the average British supermarket-bought pre-sliced ‘medium’ loaf — which contains an average of 18 slices.  Some have 20 slices but this varies — especially if you do/don’t count the heels or ends of the bread (our kids love them, others loathe them).

We factored this into the calculator as, inevitably, the more sandwiches you make the more wastage you’ll have as one slice rips/gets dropped on the floor/eaten by the dog etc.

As most savvy shoppers will know the price of a loaf varies a lot too so the cost is ballpark based on the Office for National Statistics’ average price for a loaf from the retail price index.

We hope you find it helpful and it gives you one fewer thing to worry about when planning your big party/day out/field trip.

Planning a picnic as part of a family day out? You should check out:
9 Ways to Save Money on Family Days Out

Some FAQs for all those of you wondering…

How many loaves of bread do you need to make 100 sandwiches?

The answer, according to our calculator, is: 12 — assuming your 100 sandwich consumers are all adults or hungry kids!

How many slices of bread are in a loaf of bread?

As above, this varies. Most supermarket loaves of bread contain 18 slices of bread. Some loaves will have 20 slices.

Even this can vary and it all depends on if you consider the end pieces to be slices.  Some people will openly rebel against having one of these included in their sandwich, others will love it so… it depends!

What is the end of the loaf of bread called?

This is another “it depends”. It’s called different things in different countries or even regions within those countries.

Here are just some of the alternative names we’ve heard/read about:

  1. Heel
  2. Crust
  3. End
  4. Stub
  5. Toppers
  6. Butt (or ‘butt bread’)
  7. Shpitzel
  8. ‘The end piece’
  9. Pietka (Polish)

We think #8 is especially inventive…

Whatever you call it, some love it, some hate it. In our house, if we’re making toast the kids will fight over it.  In a sandwich? Not much so much!