B Series	Millimeters
B4	250 x 353
B5	176 x 250
B6/C4	125 x 324
B6	125 x 176

C Series	Millimeters
C3	324 x 458
C4	229 x 324
C5	162 x 229
C6	114 x 162
C7/6	81 x 162
C7	81 x 114
DL	110 x 220

PAPER IN ENVELOPE

AMERICAN
Equivalent Basis Weights

Basis Weigth	Bond Ledger	Cover	Newsprint, Technical, Specialities	Text Book
	lbs/500	lbs/500	lbs/500	lbs/500
g/m	17" x 22"	20" x 26"	24" x 36"	25" x 34"
34	9	13	21	23
37	10	14	22 1/2	25
38	10	14	23	25
41	11	15	25	28
45	12	17	28	30
46	12	17	28	31
49	13	18	30	33
53	14	20	33	36
56	15	21	34	38
59	16	22	36	40
60	16	22	37	41
67	18	25	41	45
68	18	25	42	46
74	20	27	45	50
75	20	28	46	51
81	22	30	50	55
89	24	33	55	60
90	24	33	55	61
96	26	36	59	65
104	28	38	64	70
105	28	39	65	71
111	30	41	68	75
118	31	44	73	80
120	32	45	74	81
133	35	49	82	90
135	36	50	83	91
148	39	55	91	100
149	40	55	92	100
162	43	60	100	110
176	47	65	108	119
178	47	66	109	120
189	50	70	116	128
203	54	75	125	137
216	58	80	133	146
222	59	82	136	150
230	61	85	141	155
243	65	80	149	164
270	72	100	166	183
297	79	110	182	201

AMERICAN
Conversion Factors

Conversion	Multiplier
Text to Bond	0.394
Text to Cover	0.547
Text to Newsprint	0.909
Text to Metric	1.480
Bond to Text	2.540
Bond to Cover	1.390
Bond to Newsprint	2.310
Bond to Metric	3.759
Cover to Text	1.827
Cover to Bond	0.719
Cover to Newsprint	1.662
Cover to Metric	2.704
Metric to Text	0.676
Metric to Bond	0.266
Metric to Cover	0.370
Metric to Newsprint	0.614
Newsprint to Text	1.100
Newsprint to Bond	0.433
Newsprint to Cover	0.602
Newsprint to Metric	1.628
Inches to Millimeters	25.400
Millimeters to Inches	0.039
Pounds to Kilograms	0.454
Kilograms to Pounds	2.205
Short Tons to Metric Tons	0.907
Metric Tons to Short Tons	1.102