Paper size

1pt = 1 inch (= 25.4 millimeters) / 72 = 0.35277777...

ISO A3 [Landscape] (420mm × 297mm)
1190.6pt × 841.9pt = 420.0172222...mm × 297.00361111...mm

ISO A4 [Portrait] (210mm × 297mm)
595.3pt × 841.9pt = 210.00861111...mm × 297.00361111...mm

JIS B4 [Portrait] (257mm × 364mm)
728.5pt x 1031.8pt = 256.99861111...mm × 363.9961111...mm 

JIS B3 [Landscape] (515mm × 364mm)
1459.8pt x 1031.8pt = 514.98499999...mm × 363.9961111...mm 

JIS B2 [Landscape] (728mm × 515mm)
2063.6pt x 1459.8pt = 727.99222222...mm × 514.98499999...mm