A5 paper is a standard paper size that measures 148 millimeters by 210 millimeters, or approximately 5.8 inches by 8.3 inches. It is part of the A series of paper sizes defined by the ISO 216 standard, which is widely used around the world. A5 is half the size of A4 paper, making it a popular choice for notebooks, flyers, and invitations. Due to its compact size, A5 paper is easy to carry and store, making it ideal for personal and professional use. It is commonly used in various applications, including printing, writing, and crafting. Many printers and stationery products are designed to accommodate A5 paper, ensuring its accessibility.