Bicycle Gear Ratio Chart: Compare Easier Climbing and Faster Gears

Gear Chart and Calculations

Last updated on May 28th, 2026

Bicycle Gear Ratio Chart: This page was significantly updated on May 27, 2026 with a fact-checked decision section, practical table, visual guide, and related Icebike links.

Sprocket	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	38
Chainring
20	49.1	45	41.5	38.6	36	33.8	31.8	30	28.4	27	25.7	24.5	23.5	22.5	21.6	20.8	20	19.3	18.6	18	17.4	16.9	16.4	15.9	14.2
21	51.5	47.3	43.6	40.5	37.8	35.4	33.4	31.5	29.8	28.4	27	25.8	24.7	23.6	22.7	21.8	21	20.3	19.6	18.9	18.3	17.7	17.2	16.7	14.9
22	54	49.5	45.7	42.4	39.6	37.1	34.9	33	31.3	29.7	28.3	27	25.8	24.8	23.8	22.8	22	21.2	20.5	19.8	19.2	18.6	18	17.5	15.6
23	56.5	51.8	47.8	44.4	41.4	38.8	36.5	34.5	32.7	31.1	29.6	28.2	27	25.9	24.8	23.9	23	22.2	21.4	20.7	20	19.4	18.8	18.3	16.3
24	58.9	54	49.8	46.3	43.2	40.5	38.1	36	34.1	32.4	30.9	29.5	28.2	27	25.9	24.9	24	23.1	22.3	21.6	20.9	20.3	19.6	19.1	17.1
25	61.4	56.3	51.9	48.2	45	42.2	39.7	37.5	35.5	33.8	32.1	30.7	29.3	28.1	27	26	25	24.1	23.3	22.5	21.8	21.1	20.5	19.9	17.8
26	63.8	58.5	54	50.1	46.8	43.9	41.3	39	36.9	35.1	33.4	31.9	30.5	29.3	28.1	27	26	25.1	24.2	23.4	22.6	21.9	21.3	20.6	18.5
27	66.3	60.8	56.1	52.1	48.6	45.6	42.9	40.5	38.4	36.5	34.7	33.1	31.7	30.4	29.2	28	27	26	25.1	24.3	23.5	22.8	22.1	21.4	19.2
28	68.7	63	58.2	54	50.4	47.3	44.5	42	39.8	37.8	36	34.4	32.9	31.5	30.2	29.1	28	27	26.1	25.2	24.4	23.6	22.9	22.2	19.9
29	71.2	65.3	60.2	55.9	52.2	48.9	46.1	43.5	41.2	39.2	37.3	35.6	34	32.6	31.3	30.1	29	28	27	26.1	25.3	24.5	23.7	23	20.6
30	73.6	67.5	62.3	57.9	54	50.6	47.6	45	42.6	40.5	38.6	36.8	35.2	33.8	32.4	31.2	30	28.9	27.9	27	26.1	25.3	24.5	23.8	21.3
31	76.1	69.8	64.4	59.8	55.8	52.3	49.2	46.5	44.1	41.9	39.9	38	36.4	34.9	33.5	32.2	31	29.9	28.9	27.9	27	26.2	25.4	24.6	22
32	78.5	72	66.5	61.7	57.6	54	50.8	48	45.5	43.2	41.1	39.3	37.6	36	34.6	33.2	32	30.9	29.8	28.8	27.9	27	26.2	25.4	22.7
33	81	74.3	68.5	63.6	59.4	55.7	52.4	49.5	46.9	44.6	42.4	40.5	38.7	37.1	35.6	34.3	33	31.8	30.7	29.7	28.7	27.8	27	26.2	23.4
34	83.5	76.5	70.6	65.6	61.2	57.4	54	51	48.3	45.9	43.7	41.7	39.9	38.3	36.7	35.3	34	32.8	31.7	30.6	29.6	28.7	27.8	27	24.2
35	85.9	78.8	72.7	67.5	63	59.1	55.6	52.5	49.7	47.3	45	43	41.1	39.4	37.8	36.3	35	33.8	32.6	31.5	30.5	29.5	28.6	27.8	24.9
36	88.4	81	74.8	69.4	64.8	60.8	57.2	54	51.2	48.6	46.3	44.2	42.3	40.5	38.9	37.4	36	34.7	33.5	32.4	31.4	30.4	29.5	28.6	25.6
37	90.8	83.3	76.8	71.4	66.6	62.4	58.8	55.5	52.6	50	47.6	45.4	43.4	41.6	40	38.4	37	35.7	34.4	33.3	32.2	31.2	30.3	29.4	26.3
38	93.3	85.5	78.9	73.3	68.4	64.1	60.4	57	54	51.3	48.9	46.6	44.6	42.8	41	39.5	38	36.6	35.4	34.2	33.1	32.1	31.1	30.2	27
39	95.7	87.8	81	75.2	70.2	65.8	61.9	58.5	55.4	52.7	50.1	47.9	45.8	43.9	42.1	40.5	39	37.6	36.3	35.1	34	32.9	31.9	31	27.7
40	98.2	90	83.1	77.1	72	67.5	63.5	60	56.8	54	51.4	49.1	47	45	43.2	41.5	40	38.6	37.2	36	34.8	33.8	32.7	31.8	28.4
41	100.6	92.3	85.2	79.1	73.8	69.2	65.1	61.5	58.3	55.4	52.7	50.3	48.1	46.1	44.3	42.6	41	39.5	38.2	36.9	35.7	34.6	33.5	32.6	29.1
42	103.1	94.5	87.2	81	75.6	70.9	66.7	63	59.7	56.7	54	51.5	49.3	47.3	45.4	43.6	42	40.5	39.1	37.8	36.6	35.4	34.4	33.4	29.8
43	105.5	96.8	89.3	82.9	77.4	72.6	68.3	64.5	61.1	58.1	55.3	52.8	50.5	48.4	46.4	44.7	43	41.5	40	38.7	37.5	36.3	35.2	34.1	30.6
44	108	99	91.4	84.9	79.2	74.3	69.9	66	62.5	59.4	56.6	54	51.7	49.5	47.5	45.7	44	42.4	41	39.6	38.3	37.1	36	34.9	31.3
45	110.5	101.3	93.5	86.8	81	75.9	71.5	67.5	63.9	60.8	57.9	55.2	52.8	50.6	48.6	46.7	45	43.4	41.9	40.5	39.2	38	36.8	35.7	32
46	112.9	103.5	95.5	88.7	82.8	77.6	73.1	69	65.4	62.1	59.1	56.5	54	51.8	49.7	47.8	46	44.4	42.8	41.4	40.1	38.8	37.6	36.5	32.7
47	115.4	105.8	97.6	90.6	84.6	79.3	74.6	70.5	66.8	63.5	60.4	57.7	55.2	52.9	50.8	48.8	47	45.3	43.8	42.3	40.9	39.7	38.5	37.3	33.4
48	117.8	108	99.7	92.6	86.4	81	76.2	72	68.2	64.8	61.7	58.9	56.3	54	51.8	49.8	48	46.3	44.7	43.2	41.8	40.5	39.3	38.1	34.1
49	120.3	110.3	101.8	94.5	88.2	82.7	77.8	73.5	69.6	66.2	63	60.1	57.5	55.1	52.9	50.9	49	47.3	45.6	44.1	42.7	41.3	40.1	38.9	34.8
50	122.7	112.5	103.8	96.4	90	84.4	79.4	75	71.1	67.5	64.3	61.4	58.7	56.3	54	51.9	50	48.2	46.6	45	43.5	42.2	40.9	39.7	35.5
51	125.2	114.8	105.9	98.4	91.8	86.1	81	76.5	72.5	68.9	65.6	62.6	59.9	57.4	55.1	53	51	49.2	47.5	45.9	44.4	43	41.7	40.5	36.2
52	127.6	117	108	100.3	93.6	87.8	82.6	78	73.9	70.2	66.9	63.8	61	58.5	56.2	54	52	50.1	48.4	46.8	45.3	43.9	42.5	41.3	36.9
53	130.1	119.3	110.1	102.2	95.4	89.4	84.2	79.5	75.3	71.6	68.1	65	62.2	59.6	57.2	55	53	51.1	49.3	47.7	46.2	44.7	43.4	42.1	37.7
54	132.5	121.5	112.2	104.1	97.2	91.1	85.8	81	76.7	72.9	69.4	66.3	63.4	60.8	58.3	56.1	54	52.1	50.3	48.6	47	45.6	44.2	42.9	38.4
55	135	123.8	114.2	106.1	99	92.8	87.4	82.5	78.2	74.3	70.7	67.5	64.6	61.9	59.4	57.1	55	53	51.2	49.5	47.9	46.4	45	43.7	39.1
56	137.5	126	116.3	108	100.8	94.5	88.9	84	79.6	75.6	72	68.7	65.7	63	60.5	58.2	56	54	52.1	50.4	48.8	47.3	45.8	44.5	39.8
57	139.9	128.3	118.4	109.9	102.6	96.2	90.5	85.5	81	77	73.3	70	66.9	64.1	61.6	59.2	57	55	53.1	51.3	49.6	48.1	46.6	45.3	40.5
58	142.4	130.5	120.5	111.9	104.4	97.9	92.1	87	82.4	78.3	74.6	71.2	68.1	65.3	62.6	60.2	58	55.9	54	52.2	50.5	48.9	47.5	46.1	41.2
59	144.8	132.8	122.5	113.8	106.2	99.6	93.7	88.5	83.8	79.7	75.9	72.4	69.3	66.4	63.7	61.3	59	56.9	54.9	53.1	51.4	49.8	48.3	46.9	41.9
60	147.3	135	124.6	115.7	108	101.3	95.3	90	85.3	81	77.1	73.6	70.4	67.5	64.8	62.3	60	57.9	55.9	54	52.3	50.6	49.1	47.6	42.6

How to Read the Gear Ratio Chart

A gear ratio compares front chainring teeth to rear cog teeth. Lower ratios are easier for climbing and loaded riding; higher ratios move the bike farther per pedal stroke. Use the chart as a comparison tool, then check wheel size and cadence before judging real-world speed.

Result	Usually means	Use it for
Lower ratio	Easier pedaling, lower speed per cadence	Climbing, cargo, winter, tired legs.
Middle ratio	Balanced everyday range	Commuting, mixed terrain, fitness rides.
Higher ratio	Harder pedaling, more speed potential	Fast flats, descents, road riding.
Similar ratio, different wheels	May feel different on the road	Check gear inches or meters next.

Pair this chart with the gear meters tool, gear inches calculator, and gear speed calculator.

Bicycle gear ratio reading guide comparing low, middle, high ratios and wheel-size context. — Gear ratio is the starting point; wheel size and cadence decide how it feels on the road.

The calculations below are approximate for 700c & 27 Inch wheels.

To calculate the exact gearing, divide the number of chainring teeth by the number of sprocket teeth and multiply the answer by the actual rolling diameter of the tyred wheel. (Divide actual rolling circumference by 3.142 to calculate rolling diameter)

Should you have any questions or require further clarification on the topic, please feel free to connect with our expert author Rhodes Perry by leaving a comment below. We value your engagement and are here to assist you.