What's your shoe size?

Today, I talked with my friend about shoe size.
She lives in the Philippines. Today I talked with my friend from the Phillipines about shoe sizes.

She said told me her shoe size is 7'' inches.
But I could not understand the size because in Japan we usually don't use "inch", we usually use "cm" in Japan. Japanese usually use "cm".

We started to search (the internet?) for worldwide shoe sizing.about shoe size of the world.
A few minutes later, we found the list of shoe size of the world. Within a few minutes we had found a worldwide shoe sizing list. 

Her shoe size is 7'' inches., in my country that is 24.5cm, whereas my shoe size is 23cm which is 5.5'' in her country. It's 24.5 cm in my country.
My shoe size is 23 cm. It's 6 inches in her country.

We laughed and said "We can buy shoes at each other's country already."

If we live in the same country, this is a commonplace topic.
But today, it was really interesting.

Within one's own country this is a commonplace topic but to share the discussion with  a person from anther country makes it much more interesting.

Great job, I hope I have given you some ideas. Whilst a lot of what you wrote could be correct, it is fragmented, I have tried to show you a more flowing style which is easier for the reader and gives more information, e.g. where did you search for the information? Also when writing distance we usually write as 7cm or 7" or seven centimetres, seven inches, there is no space between the 7 and the cm. Please note in Australia we spell metre not meter as in US. It is best to keep the same style, so if you write as a "7", use the shortcut "cm", but if you write the word "seven", write the full word "centimetre". Please message me if you have any problems with this.