Equivalent Weights

Use these tables to get a quick estimate of an equivalent weight in another paper type. First, a reminder of basis sizes and areas by paper type.

Paper Type	Basis Size	Ream Basis Area (ft²)	Sheet Basis Area (in²)
Ivex Paper	24″ x 36″	3,000 ft²	864 in²
Bond	17″ x 22″	1,299 ft²	374 in²
Book / Offset	25″ x 38″	3,299 ft²	950 in²
Bristol	22.5″ x 28.5″	2,227 ft²	641.25 in²
Cover	20″ x 26″	1,806 ft²	520 in²
Index	25.5″ x 30.5″	2,701 ft²	777.75 in²
Tag / Newsprint	24″ x 36″	3,000 ft²	864 in²

Ivex Paper

Ivex Paper	Bond	Book / Offset	Bristol	Cover	Index	Metric ( g/m² )
30	13	33	22	18	27	49
32	14	35	24	19	29	52
35	15	39	26	21	32	57
40	17	44	30	24	36	65
50	22	55	37	30	45	81
60	26	66	45	36	54	98
74	32	81	55	44	66	120
80	35	88	59	48	72	130
100	43	110	74	60	90	163
110	48	121	82	66	99	179
120	52	132	89	72	108	195
133	58	146	99	80	120	216

Bond	Book / Offset	Bristol	Cover	Index	Ivex / Tag / Newsprint	Metric ( g/m² )
12	30	21	17	25	28*	45
13	33	22	18	27	30	49
14	36	24	19	29	32	53
15	38	26	21	31	35	56
16	41	27	22	33	37	60
18	46	31	25	37	42	68
20	51	34	28	42	46	75
22	56	38	31	46	51	83
24	61	41	33	50	55	90
26	66	45	36	54	60	98
28	71	48	39	58	65	105
30	76	51	42	62	69	113
32	81	55	44	67	74	120
36	91	62	50	75	83	135
38	97	65	53	79	88	143
40	102	69	56	83	92	150

*Ivex does not currently manufacture these weights.

Book / Offset	Bond	Bristol	Cover	Index	Ivex / Tag / Newsprint	Metric ( g/m² )
30	12	20	16	25	27*	44
33	13	22	18	27	30	49
35	14	24	19	29	32	52
38	15	26	21	31	35	56
40	16	27	22	33	36	59
45	18	30	25	37	41	67
50	20	34	27	41	45	74
55	22	37	30	45	50	81
60	24	41	33	49	55	89
65	26	44	36	53	59	96
70	28	47	38	57	64	104
75	30	51	41	61	68	111
80	32	54	44	65	73	118
90	35	61	49	74	82	133
100	39	68	55	82	91	148
120	47	81	66	98	109	178

*Ivex does not currently manufacture these weights.

Bristol	Bond	Book / Offset	Cover	Index	Ivex / Tag / Newsprint	Metric ( g/m² )
67	39	99	54	81	90	147
80	47	119	65	97	108	175
90	52	133	73	109	121	197
100	58	148	81	121	135	219
120	70	178	97	146	162*	263
140	82	207	114	170	189*	307
160	93	237	130	194	216*	351
180	105	267	146	218	242*	395

*Ivex does not currently manufacture these weights unless laminating is an option.

Cover	Bond	Book / Offset	Bristol	Index	Ivex / Tag / Newsprint	Metric ( g/m² )
25	18	46	31	37	42	68
35	25	64	43	52	58	95
40	29	73	49	60	66	108
50	36	91	62	75	83	135
55	40	100	68	82	91	149
60	43	110	74	90	100	162
65	47	119	80	97	108	176
70	50	128	86	105	116	189
80	58	146	99	120	133	216
90	65	164	111	135	150*	243
100	72	183	123	150	166*	270
120	86	219	148	179	199*	324
130	94	237	160	194	216*	351

*Ivex does not currently manufacture these weights unless laminating is an option.

Index	Bond	Book / Offset	Bristol	Cover	Ivex / Tag / Newsprint	Metric ( g/m² )
90	43	110	74	60	100	163
110	53	134	91	74	122	199
120	58	147	99	80	133	217
140	67	171	115	94	155*	253
170	82	208	140	114	189*	307
220	106	269	181	147	244*	398

*Ivex does not currently manufacture these weights unless laminating is an option.

Tag / Newsprint	Bond	Book / Offset	Bristol	Cover	Index	Metric ( g/m² )
26	11	29	19	16	23	42
27	12	30	20	16	24	44
28	12	31	21	17	25	46
30	13	33	22	18	27	49
32	14	35	24	19	29	52
40	17	44	30	24	36	65
50	22	55	37	30	45	81
60	26	66	45	36	54	98
80	35	88	59	48	72	130
100	43	110	74	60	90	163
110	48	121	82	66	99	179
120	52	132	89	72	108	195
150	65	165	111	90	135	244
175	76	192	130	105	158	285
200	87	220	148	120	180	325
250	108	275	186	151	225	407

Metric ( g/m² )	Bond	Book / Offset	Bristol	Cover	Index	Ivex / Tag / Newsprint
21	6	14	10	8	12	13
24	6	16	11	9	13	15
26	7	18	12	10	14	16
27	7	18	12	10	15	17
28	7	19	13	10	15	17
30	8	20	14	11	17	18
31	8	21	14	11	17	19
32	9	22	15	12	18	20
33	9	22	15	12	18	20
35	9	24	16	13	19	22
37	10	25	17	14	20	23
39	10	26	18	14	22	24
40	11	27	18	15	22	25
42	11	28	19	16	23	26
45	12	30	21	17	25	28
48	13	32	22	18	27	29
49	13	33	22	18	27	30
50	13	34	23	18	28	31
51	14	34	23	19	28	31
52	14	35	24	19	29	32
54	14	36	25	20	30	33
55	15	37	25	20	30	34
56	15	38	26	21	31	34
57	15	39	26	21	32	35
60	16	41	27	22	33	37
65	17	44	30	24	36	40
70	19	47	32	26	39	43
75	20	51	34	28	41	46
80	21	54	36	30	44	49
85	23	57	39	31	47	52
90	24	61	41	33	50	55
100	27	68	46	37	55	61
104	28	70	47	38	58	64
107	28	72	49	40	59	66
110	29	74	50	41	61	68
115	31	78	52	43	64	71
118	31	80	54	44	65	73
120	32	81	55	44	66	74
130	35	88	59	48	72	80
133	35	90	61	49	74	82
135	36	91	62	50	75	83
143	38	97	65	53	79	88
148	39	100	68	55	82	91
150	40	101	68	55	83	92
156	42	105	71	58	86	96
160	43	108	73	59	89	98
163	43	110	74	60	90	100
165	44	111	75	61	91	101
170	45	115	78	63	94	104
180	48	122	82	67	100	111
190	51	128	87	70	105	117
200	53	135	91	74	111	123
203	54	137	93	75	112	125
216	57	146	99	80	119	133
220	59	149	100	81	122	135
230	61	155	105	85	127	141
240	64	162	109	89	133	147
250	67	169	114	92	138	154
260	69	176	119	96	144	160
270	72	182	123	100	149	166
280	74	189	128	104	155	172
290	77	196	132	107	160	178
300	80	203	137	111	166	184
315	84	213	144	117	174	194
325	86	220	148	120	180	200
330	88	223	151	122	183	203
350	93	236	160	129	194	215
370	98	250	169	137	205	227
380	101	257	173	141	210	233
400	106	270	182	148	221	246
450	120	304	205	166	249	277
500	133	338	228	185	277	307