Printable Bike Gear Inch Chart

For your exact drivetrain, your speed at any cadence or a side-by-side comparison of two setups, use the gear ratio calculator.

Gear inches

Road (700 × 28 mm)

Ring \ cog	10	11	12	13	14	15	16	17	19	21	24	27	30	34
53	141	128	118	109	101	94	88	83	74	67	59	52	47	42
52	138	126	115	107	99	92	87	81	73	66	58	51	46	41
50	133	121	111	102	95	89	83	78	70	63	55	49	44	39
48	128	116	107	98	91	85	80	75	67	61	53	47	43	38
46	122	111	102	94	87	82	77	72	64	58	51	45	41	36
39	104	94	87	80	74	69	65	61	55	49	43	38	35	31
36	96	87	80	74	68	64	60	56	50	46	40	36	32	28
35	93	85	78	72	67	62	58	55	49	44	39	35	31	27
34	91	82	75	70	65	60	57	53	48	43	38	34	30	27
33	88	80	73	68	63	59	55	52	46	42	37	33	29	26

Gravel and 1× (700 × 40 mm)

Ring \ cog	10	11	13	15	17	19	21	24	28	32	36	40	44
46	127	115	97	84	75	67	60	53	45	40	35	32	29
44	121	110	93	81	71	64	58	50	43	38	34	30	28
42	116	105	89	77	68	61	55	48	41	36	32	29	26
40	110	100	85	73	65	58	52	46	39	34	31	28	25
38	105	95	81	70	62	55	50	44	37	33	29	26	24
36	99	90	76	66	58	52	47	41	35	31	28	25	23
31	85	78	66	57	50	45	41	36	30	27	24	21	19
30	83	75	64	55	49	43	39	34	30	26	23	21	19

Mountain (29 × 2.4 in)

Ring \ cog	10	12	14	16	18	21	24	28	32	36	42	45	50	52
36	105	87	75	66	58	50	44	37	33	29	25	23	21	20
34	99	83	71	62	55	47	41	35	31	28	24	22	20	19
32	93	78	67	58	52	44	39	33	29	26	22	21	19	18
30	87	73	62	55	49	42	36	31	27	24	21	19	17	17
28	82	68	58	51	45	39	34	29	26	23	19	18	16	16

Green: low climbing gears (under 28 gear inches). Orange: big gears for fast flats and descents (over 100 gear inches). Speed at 90 rpm (mph) = gear inches × 0.268.

Frequently asked questions

What are gear inches?

Chainring ÷ cog × wheel diameter in inches: the size of the wheel that would cover the same distance per pedal stroke on a direct-drive bike. A 50×11 on a road bike is about 121 gear inches; a 34×34, about 27.

What gearing do I need to climb steep hills?

For 8-10% grades at a comfortable pace, most riders need a low gear of 25 gear inches or less. Check it against your power in the gear ratio calculator.

Does tire size change gear inches?

A little: going from 25 to 32 mm tires raises every gear by about 2%. That's why there's a chart for each wheel type.

Printable Gear Inch Chart

Gear inches

Road (700 × 28 mm)

Gravel and 1× (700 × 40 mm)

Mountain (29 × 2.4 in)

Frequently asked questions

Save your bike once, use it everywhere

Ring \ cog	10	11	12	13	14	15	16	17	19	21	24	27	30	34
53	141	128	118	109	101	94	88	83	74	67	59	52	47	42
52	138	126	115	107	99	92	87	81	73	66	58	51	46	41
50	133	121	111	102	95	89	83	78	70	63	55	49	44	39
48	128	116	107	98	91	85	80	75	67	61	53	47	43	38
46	122	111	102	94	87	82	77	72	64	58	51	45	41	36
39	104	94	87	80	74	69	65	61	55	49	43	38	35	31
36	96	87	80	74	68	64	60	56	50	46	40	36	32	28
35	93	85	78	72	67	62	58	55	49	44	39	35	31	27
34	91	82	75	70	65	60	57	53	48	43	38	34	30	27
33	88	80	73	68	63	59	55	52	46	42	37	33	29	26

Ring \ cog	10	11	13	15	17	19	21	24	28	32	36	40	44
46	127	115	97	84	75	67	60	53	45	40	35	32	29
44	121	110	93	81	71	64	58	50	43	38	34	30	28
42	116	105	89	77	68	61	55	48	41	36	32	29	26
40	110	100	85	73	65	58	52	46	39	34	31	28	25
38	105	95	81	70	62	55	50	44	37	33	29	26	24
36	99	90	76	66	58	52	47	41	35	31	28	25	23
31	85	78	66	57	50	45	41	36	30	27	24	21	19
30	83	75	64	55	49	43	39	34	30	26	23	21	19

Ring \ cog	10	12	14	16	18	21	24	28	32	36	42	45	50	52
36	105	87	75	66	58	50	44	37	33	29	25	23	21	20
34	99	83	71	62	55	47	41	35	31	28	24	22	20	19
32	93	78	67	58	52	44	39	33	29	26	22	21	19	18
30	87	73	62	55	49	42	36	31	27	24	21	19	17	17
28	82	68	58	51	45	39	34	29	26	23	19	18	16	16

Ring \ cog	10	11	12	13	14	15	16	17	19	21	24	27	30	34
53	141	128	118	109	101	94	88	83	74	67	59	52	47	42
52	138	126	115	107	99	92	87	81	73	66	58	51	46	41
50	133	121	111	102	95	89	83	78	70	63	55	49	44	39
48	128	116	107	98	91	85	80	75	67	61	53	47	43	38
46	122	111	102	94	87	82	77	72	64	58	51	45	41	36
39	104	94	87	80	74	69	65	61	55	49	43	38	35	31
36	96	87	80	74	68	64	60	56	50	46	40	36	32	28
35	93	85	78	72	67	62	58	55	49	44	39	35	31	27
34	91	82	75	70	65	60	57	53	48	43	38	34	30	27
33	88	80	73	68	63	59	55	52	46	42	37	33	29	26

Ring \ cog	10	11	13	15	17	19	21	24	28	32	36	40	44
46	127	115	97	84	75	67	60	53	45	40	35	32	29
44	121	110	93	81	71	64	58	50	43	38	34	30	28
42	116	105	89	77	68	61	55	48	41	36	32	29	26
40	110	100	85	73	65	58	52	46	39	34	31	28	25
38	105	95	81	70	62	55	50	44	37	33	29	26	24
36	99	90	76	66	58	52	47	41	35	31	28	25	23
31	85	78	66	57	50	45	41	36	30	27	24	21	19
30	83	75	64	55	49	43	39	34	30	26	23	21	19

Ring \ cog	10	12	14	16	18	21	24	28	32	36	42	45	50	52
36	105	87	75	66	58	50	44	37	33	29	25	23	21	20
34	99	83	71	62	55	47	41	35	31	28	24	22	20	19
32	93	78	67	58	52	44	39	33	29	26	22	21	19	18
30	87	73	62	55	49	42	36	31	27	24	21	19	17	17
28	82	68	58	51	45	39	34	29	26	23	19	18	16	16

Ring \ cog	10	11	12	13	14	15	16	17	19	21	24	27	30	34
53	141	128	118	109	101	94	88	83	74	67	59	52	47	42
52	138	126	115	107	99	92	87	81	73	66	58	51	46	41
50	133	121	111	102	95	89	83	78	70	63	55	49	44	39
48	128	116	107	98	91	85	80	75	67	61	53	47	43	38
46	122	111	102	94	87	82	77	72	64	58	51	45	41	36
39	104	94	87	80	74	69	65	61	55	49	43	38	35	31
36	96	87	80	74	68	64	60	56	50	46	40	36	32	28
35	93	85	78	72	67	62	58	55	49	44	39	35	31	27
34	91	82	75	70	65	60	57	53	48	43	38	34	30	27
33	88	80	73	68	63	59	55	52	46	42	37	33	29	26

Ring \ cog	10	11	13	15	17	19	21	24	28	32	36	40	44
46	127	115	97	84	75	67	60	53	45	40	35	32	29
44	121	110	93	81	71	64	58	50	43	38	34	30	28
42	116	105	89	77	68	61	55	48	41	36	32	29	26
40	110	100	85	73	65	58	52	46	39	34	31	28	25
38	105	95	81	70	62	55	50	44	37	33	29	26	24
36	99	90	76	66	58	52	47	41	35	31	28	25	23
31	85	78	66	57	50	45	41	36	30	27	24	21	19
30	83	75	64	55	49	43	39	34	30	26	23	21	19

Ring \ cog	10	12	14	16	18	21	24	28	32	36	42	45	50	52
36	105	87	75	66	58	50	44	37	33	29	25	23	21	20
34	99	83	71	62	55	47	41	35	31	28	24	22	20	19
32	93	78	67	58	52	44	39	33	29	26	22	21	19	18
30	87	73	62	55	49	42	36	31	27	24	21	19	17	17
28	82	68	58	51	45	39	34	29	26	23	19	18	16	16