Odds Conversion Charts

Quick-reference conversions between American, decimal, fractional, and implied probability formats. Each page includes a full payout table at 6 bet sizes.

American Odds

American	Decimal	Fractional	Implied Prob.
-105	1.95	20/21	51.2%
-110	1.91	10/11	52.4%
-115	1.87	20/23	53.5%
-120	1.83	5/6	54.5%
-125	1.80	4/5	55.6%
-130	1.77	10/13	56.5%
-140	1.71	5/7	58.3%
-145	1.69	20/29	59.2%
-150	1.67	2/3	60.0%
-160	1.63	5/8	61.5%
-175	1.57	4/7	63.6%
-180	1.56	5/9	64.3%
-200	1.50	1/2	66.7%
-250	1.40	2/5	71.4%
-300	1.33	1/3	75.0%
-350	1.29	2/7	77.8%
-400	1.25	1/4	80.0%
-500	1.20	1/5	83.3%
+100	2.00	1/1	50.0%
+110	2.10	11/10	47.6%
+120	2.20	6/5	45.5%
+125	2.25	5/4	44.4%
+135	2.35	27/20	42.6%
+140	2.40	7/5	41.7%
+150	2.50	3/2	40.0%
+160	2.60	8/5	38.5%
+175	2.75	7/4	36.4%
+180	2.80	9/5	35.7%
+200	3.00	2/1	33.3%
+250	3.50	5/2	28.6%
+300	4.00	3/1	25.0%
+350	4.50	7/2	22.2%
+400	5.00	4/1	20.0%
+450	5.50	9/2	18.2%
+500	6.00	5/1	16.7%
+600	7.00	6/1	14.3%
+700	8.00	7/1	12.5%
+800	9.00	8/1	11.1%
+1000	11.00	10/1	9.1%

Fractional Odds

Fractional	Decimal	American	Implied Prob.
1/5	1.20	-500	83.3%
1/4	1.25	-400	80.0%
1/3	1.33	-300	75.0%
1/2	1.50	-200	66.7%
2/3	1.67	-150	60.0%
1/1	2.00	+100	50.0%
6/5	2.20	+120	45.5%
5/4	2.25	+125	44.4%
7/5	2.40	+140	41.7%
3/2	2.50	+150	40.0%
2/1	3.00	+200	33.3%
5/2	3.50	+250	28.6%
3/1	4.00	+300	25.0%
7/2	4.50	+350	22.2%
4/1	5.00	+400	20.0%
5/1	6.00	+500	16.7%
10/1	11.00	+1000	9.1%

Decimal Odds

Decimal	American	Fractional	Implied Prob.
1.25	-400	1/4	80.0%
1.33	-303	33/100	75.2%
1.50	-200	1/2	66.7%
1.67	-149	67/100	59.9%
1.80	-125	4/5	55.6%
1.91	-110	91/100	52.4%
2.00	+100	1/1	50.0%
2.50	+150	3/2	40.0%
3.00	+200	2/1	33.3%
4.00	+300	3/1	25.0%
5.00	+400	4/1	20.0%
6.00	+500	5/1	16.7%

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