Motor and Cable Size Calculator

Welcome to the Single and Three Phase Motor Calculator for Induction and Non-Induction Loads!

3 Phase and Single Phase Motor Calculator. Calculates a motor's Running Load Amps, HP, kW, kVA, and kVArs!

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3 Phase Motor Calculator

Input Unit	Input	Output	Output Unit
Volt			RLA
HP			kW
PF (%)			kVA
EFF (%)			kVARS

Single Phase Motors

Input Unit	Input	Output	Output Unit
Volt			RLA
HP			kW
PF (%)			kVA
EFF (%)			kVARS

Horsepower Calculator

Speed	Torque	HP

Torque Calculator

Speed	HP	Torque

kW to HP Calculator

kW	HP

HP to kW Calculator

HP	kW

Select Full Load Ampacity Table

(3 Phase or Single Phase)

MOTOR FULL LOAD AMP RATINGS TABLE ( 3 Phase, 85% PF, 90% EFF )
Volts			208		230		460		575		2300		4000		13000
HP	kW	kVA	RLA	FLA	RLA	FLA	RLA	FLA	RLA	FLA	RLA	FLA	RLA	FLA	RLA	FLA
1/2	.37	.48	1.35	1.69	1.21	1.5	-	-	-	-	-	-	-	-	-	-
1	.75	.98	2.71	3.39	2.45	3.06	-	-	-	-	-	-	-	-	-	-
2	1.49	1.95	5.41	6.76	4.9	6.13	-	-	-	-	-	-	-	-	-	-
3	2.24	2.93	8.13	10.16	7.34	9.18	-	-	-	-	-	-	-	-	-	-
4	2.98	3.91	10.8	13.5	9.78	12.2	-	-	-	-	-	-	-	-	-	-
5	3.73	4.88	13.5	16.9	12.24	15.3	6.12	7.65	-	-	-	-	-	-	-	-
7	5.22	6.83	18.9	17.1	21.4	21.9	8.75	10.7	-	-	-	-	-	-	-	-
10	7.46	9.75	27.1	33.9	24.5	30.6	12.2	15.3	-	-	-	-	-	-	-	-
15	11.9	14.6	40.6	50.8	36.7	45.9	18.4	23	-	-	-	-	-	-	-	-
20	14.92	19.5	54.1	67.6	49	61.3	24.5	30.6	-	-	-	-	-	-	-	-	-
25	18.65	24.4	60.6	84.6	52.5	75.5	30.6	38.6	-	-	-	-	-	-	-	-
30	22.38	29.3	81.2	102	73.4	91.8	36.7	45.9	-	-	-	-	-	-	-	-
40	29.84	39	108	135	169	122	49	61.3	39.2	49	9.79	12.2	5.63	7.04	-	-
50	37.3	48.8	135	169	122	153	61.2	76.5	49	61.3	12.25	15.3	5.25	8.8	-	-
60	44.76	58.5	162	230	147	184	73.4	91.8	58.8	73.5	14.7	18.4	8.45	10.6	-	-
75	55.95	73.1	203	254	184	230	91.8	115	73.4	91.8	18.4	23	10.6	13.3	-	-
100	74.6	97.5	-	-	-	-	122	153	97.9	122	24.5	30.6	14.4	17.6	4.33	5.41
125	93.25	122	-	-	-	-	153	191	122	153	30.6	38.3	17.6-	22	5.41	6.76
150	111.9	146	-	-	-	-	184	230	147	184	36.7	45.9	21.1	26.4	6.5	8.13
200	149.2	195	-	-	-	-	245	306	196	245	49	61.3	28.2	35.3	8.66	10.8
250	186.5	244	-	-	-	-	306	383	245	306	61.2	76.5	35.2	44	10.8	13.5
300	223.8	293	-	-	-	-	367	459	294	368	73.4	91.8	42.2	52.8	13	16.3
350	261.1	341	-	-	-	-	428	535	343	429	85.7	107	43.9	61.9	15.2	19
400	298.4	390	-	-	-	-	490	613	392	490	97.9	122	56.3	70.4	17.3	21.6
450	335.7	439	-	-	-	-	551	689	441	551	110	138	63.3	79.1	19.5	24.4
500	373	488	-	-	-	-	612	765	490	613	122	153	70.4	88	21.7	27.1
600	447.6	585	-	-	-	-	734	918	588	735	147	184	84.5	106	26	32.5
700	522.2	683	-	-	-	-	857	1071	685	856	171	214	98.5	123	30.3	37.9
800	596.8	780	-	-	-	-	979	1224	783	979	196	245	113	141	34.6	43.3
900	671.4	878	-	-	-	-	1185	1320	881	1101	220	275	127	159	39	48.8
1000	746	975	-	-	-	-	-	-	-	-	245	306	141	176	43.3	54.1
1250	932.5	1219	-	-	-	-	-	-	-	-	306	383	176	220	54.4	67.6
1500	1119	1463	-	-	-	-	-	-	-	-	367	459	211	264	65	81.3
1750	1305.5	1707	-	-	-	-	-	-	-	-	428	535	246	308	75.8	94.8
2000	1492	1950	-	-	-	-	-	-	-	-	490	613	282	353	86.6	108
2250	1678.5	2194	-	-	-	-	-	-	-	-	551	689	317	396	97.4	122
2500	1865	2438	-	-	-	-	-	-	-	-	612	765	352	440	108	135
3000	2238	2925	-	-	-	-	-	-	-	-	734	918	422	528	130	163
3500	2611	3413	-	-	-	-	-	-	-	-	-	-	-	-	152	190
4000	2984	3901	-	-	-	-	-	-	-	-	-	-	-	-	173	216
4500	3357	4388	-	-	-	-	-	-	-	-	-	-	-	-	195	244
5000	3730	4860	-	-	-	-	-	-	-	-	-	-	-	-	217	271

SINGLE PHASE MOTOR FULL LOAD AMP RATINGS TABLE (Below 1 HP - 56% PF, 54% EFF) (Above 1 HP - 80% PF, 80% EFF)
Volts	115	200	230
HP	kW	kVA	RLA	FLA	RLA	FLA	RLA	FLA
1/4	0.19	0.63	5.4	6.7	3.1	3.9	2.7	3.4
1/3	0.25	0.82	7.1	8.9	4.1	5.1	3.6	4.5
1/2	0.37	1.22	10.7	13.4	6.2	7.7	5.4	6.7
3/4	0.56	1.85	16	20	9.3	11.6	8	10
1	0.75	1.2	10.1	12.7	5.8	7.3	5	6.3
1 1/2	1.12	1.75	15.2	19	8.7	10.9	7.6	9.5
2	1.49	2.33	20.3	25.3	11.6	14.6	10.1	12.7
2 1/2	1.87	2.92	25.3	31.7	14.6	18.2	12.7	15.8
3	2.24	3.5	30.4	38	17.5	21.9	15.2	19
3 1/2	2.61	4.01	35.5	44.3	20.4	25.5	17.7	22.2
4	2.98	4.66	40.5	50.7	23.3	29.1	20.3	25.3
5	3.73	5.83	50.7	63.4	29.1	36.4	25.3	31.7
7 1/2	5.6	8.74	76	95	43.7	54.6	38	47.5
10	7.46	11.65	101.3	126.7	58.3	72.9	50.7	63.4
15	11.2	14.48	152	190	87.4	109.3	76	95

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