How nany a4 sheets can a stamp post royal mail

According to the Royal Mail's website, the maximum weight and size for a standard letter (A4 size) that can be sent using a stamp is:

As for the number of A4 sheets that can be sent using a stamp, it depends on the thickness and weight of the paper. However, as a general guideline, you can estimate the following:

Based on this, you can estimate that a standard letter (A4 size) can hold:

Keep in mind that these are rough estimates, and the actual weight and size of your letter may vary depending on the specific paper and contents. If you're unsure, it's always best to check with Royal Mail or use their online postage calculator to ensure you're using the correct postage.