F4

With dimensions of 210mm x 330mm, the F4 format has a total surface area of 0.0693 square meters. As part of the supplementary Asian F paper size series, F4 falls between F3 and PA4, while mirroring the width of ISO A4. Also referred to as metric foolscap or folio, F4 shares the length of traditional British foolscap with the added A4 width to create an efficient hybrid size. The result is an extremely versatile regional format well-suited for magazines, periodicals, office documents, and textbooks across Southeast Asia requiring just a bit more vertical space than A4. Unlike other F sizes, F4 has origins intertwining old British paper tradition with modern A-based dimensions to generate global/local compatibility and utility. Its hybrid 8.5” x 13” graphic-friendly area reveals how F series modifications to ISO sizes can produce regional standards with widespread function. Blending ISO and Asian sensibilities, the shrewd F4 format exemplifies transitional paper dimensions effectively balancing global reach and regional relevance through customization.