What size is smaller than A5

[shhhh]

A5 is half of A4 but what half of A5..? (Thinking of the small cards similar to what m&s sell as thankyou cards..) know what I mean.?

TIA

A6!

lol, thought it was a trick question!

The paper scale is

A0 A1 A2 A3 A4 A5 A6

Each size being exactly half of the size before.

good link for questions like this

Not a trick question
Just I have envelopes A6 but need cards smaller (Think I may have confussed question..)

So think what I need to know is whats smaller than A6..?

miyazaki,was that sarcasm..?

Maybe if we all googled then there wouldn't be much use for mn..? and sometimes mn allows answers to be found easily and quickly. Not that I need to explain myself.

Then you'd need A7 I think.

Thanks bexie

Perhaps postcard size is what you need?

its smaller than postcard oymmy..I would say half..know the cards that you post and think will they arrive
Thanks x

Envelopes are usually C6/C5 etc so an A6/A5 card will fit...

more of a gentle tease than sarcasm...

A6 - as someone else said A sizes are exactly half the previous size and normally envelopes are a little larger to accommodate the A sized card.