Technical Information

Revised Thermocouple Reference Tables

TYPE
J
Reference Tables N.I.S.T.

Monograph 175

Revised to ITS-90

°F

Iron
vs.
Copper-Nickel

MAXIMUM TEMPERATURE RANGE
Thermocouple Grade
32 to 1382°F
0 to 750°C
Extension Grade
32 to 392°F
0 to 200°C
LIMITS OF ERROR
(whichever is greater)
Standard: 2.2°C or 0.75%
Special: 1.1°C or 0.4%
COMMENTS, BARE WIRE ENVIRONMENT:
Reducing, Vacuum, Inert; Limited Use in
Oxidizing at High Temperatures;
Not Recommended for Low Temperatures
TEMPERATURE IN DEGREES °F
REFERENCE JUNCTION AT 32°F

Thermoelectric Voltage in Millivolts

°F -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 °F
-340-8.095-8.085-8.074-8.063-8.052-8.041-8.030-340
-330-8.030-8.019-8.008-7.996-7.985-7.973-7.962-7.950-7.938-7.927-7.915-330
-320-7.915-7.903-7.890-7.878-7.866-7.854-7.841-7.829-7.816-7.804-7.791-320
-310-7.791-7.778-7.765-7.752-7.739-7.726-7.713-7.699-7.686-7.672-7.659-310
-300-7.659-7.645-7.632-7.618-7.604-7.590-7.576-7.562-7.548-7.534-7.519-300
-290-7.519-7.505-7.491-7.476-7.462-7.447-7.432-7.417-7.403-7.388-7.373-290
-280-7.373-7.357-7.342-7.327-7.312-7.296-7.281-7.265-7.250-7.234-7.219-280
-270-7.219-7.203-7.187-7.171-7.155-7.139-7.123-7.107-7.090-7.074-7.058-270
-260-7.058-7.041-7.025-7.008-6.991-6.975-6.958-6.941-6.924-6.907-6.890-260
-250-6.890-6.873-6.856-6.839-6.821-6.804-6.787-6.769-6.752-6.734-6.716-250
-240-6.716-6.699-6.681-6.663-6.645-6.627-6.609-6.591-6.573-6.555-6.536-240
-230-6.536-6.518-6.500-6.481-6.463-6.444-6.426-6.407-6.388-6.370-6.351-230
-220-6.351-6.332-6.313-6.294-6.275-6.256-6.236-6.217-6.198-6.179-6.159-220
-210-6.159-6.140-6.120-6.101-6.081-6.061-6.042-6.022-6.002-5.982-5.962-210
-200-5.962-5.942-5.922-5.902-5.882-5.862-5.842-5.821-5.801-5.781-5.760-200
-190-5.760-5.740-5.719-5.699-5.678-5.657-5.637-5.616-5.595-5.574-5.553-190
-180-5.553-5.532-5.511-5.490-5.469-5.448-5.426-5.405-5.384-5.363-5.341-180
-170-5.341-5.320-5.298-5.277-5.255-5.233-5.212-5.190-5.168-5.146-5.125-170
-160-5.125-5.103-5.081-5.059-5.037-5.015-4.992-4.970-4.948-4.926-4.903-160
-150-4.903-4.881-4.859-4.836-4.814-4.791-4.769-4.746-4.724-4.701-4.678-150
-140-4.678-4.655-4.633-4.610-4.587-4.564-4.541-4.518-4.495-4.472-4.449-140
-130-4.449-4.425-4.402-4.379-4.356-4.332-4.309-4.286-4.262-4.239-4.215-130
-120-4.215-4.192-4.168-4.144-4.121-4.097-4.073-4.050-4.026-4.002-3.978-120
-110-3.978-3.954-3.930-3.906-3.882-3.858-3.834-3.810-3.786-3.761-3.737-110
-100-3.737-3.713-3.688-3.664-3.640-3.615-3.591-3.566-3.542-3.517-3.493-100
-90-3.493-3.468-3.443-3.419-3.394-3.369-3.344-3.320-3.295-3.270-3.245-90
-80-3.245-3.220-3.195-3.170-3.145-3.120-3.095-3.070-3.044-3.019-2.994-80
-70-2.994-2.969-2.943-2.918-2.893-2.867-2.842-2.817-2.791-2.766-2.740-70
-60-2.740-2.714-2.689-2.663-2.638-2.612-2.586-2.560-2.535-2.509-2.483-60
-50-2.483-2.457-2.431-2.405-2.379-2.353-2.327-2.301-2.275-2.249-2.223-50
-40-2.223-2.197-2.171-2.145-2.118-2.092-2.066-2.040-2.013-1.987-1.961-40
-30-1.961-1.934-1.908-1.881-1.855-1.828-1.802-1.775-1.749-1.722-1.695-30
-20-1.695-1.669-1.642-1.615-1.589-1.562-1.535-1.508-1.482-1.455-1.428-20
-10-1.428-1.401-1.374-1.347-1.320-1.293-1.266-1.239-1.212-1.185-1.158-10
0-1.158-1.131-1.104-1.076-1.049-1.022-0.995-0.967-0.940-0.913-0.8860
°F -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 °F

°F 0 1 2 3 4 5 6 7 8 9 10 °F
0-0.886-0.858-0.831-0.803-0.776-0.749-0.721-0.694-0.666-0.639-0.6110
10-0.611-0.583-0.556-0.528-0.501-0.473-0.445-0.418-0.390-0.362-0.33410
20-0.334-0.307-0.279-0.251-0.223-0.195-0.168-0.140-0.112-0.084-0.05620
30-0.056-0.0280.0000.0280.0560.0840.1120.1400.1680.1960.22530
400.2250.2530.2810.3090.3370.3650.3940.4220.4500.4780.50740
500.5070.5350.5630.5920.6200.6490.6770.7050.7340.7620.79150
600.7910.8190.8480.8760.9050.9330.9620.9911.0191.0481.07660
701.0761.1051.1341.1621.1911.2201.2491.2771.3061.3351.36470
801.3641.3921.4211.4501.4791.5081.5371.5661.5941.6231.65280
901.6521.6811.7101.7391.7681.7971.8261.8551.8841.9131.94290
1001.9421.9722.0012.0302.0592.0882.1172.1462.1752.2052.234100
1102.2342.2632.2922.3222.3512.3802.4092.4392.4682.4972.527110
1202.5272.5562.5852.6152.6442.6732.7032.7322.7622.7912.821120
1302.8212.8502.8802.9092.9382.9682.9973.0273.0573.0863.116130
1403.1163.1453.1753.2043.2343.2643.2933.3233.3533.3823.412140
1503.4123.4423.4713.5013.5313.5603.5903.6203.6503.6793.709150
1603.7093.7393.7693.7983.8283.8583.8883.9183.9483.9774.007160
1704.0074.0374.0674.0974.1274.1574.1874.2174.2464.2764.306170
1804.3064.3364.3664.3964.4264.4564.4864.5164.5464.5764.606180
1904.6064.6364.6664.6964.7264.7574.7874.8174.8474.8774.907190
2004.9074.9374.9674.9975.0285.0585.0885.1185.1485.1785.209200
2105.2095.2395.2695.2995.3295.3605.3905.4205.4505.4805.511210
2205.5115.5415.5715.6025.6325.6625.6925.7235.7535.7835.814220
2305.8145.8445.8745.9055.9355.9655.9966.0266.0566.0876.117230
2406.1176.1476.1786.2086.2396.2696.2996.3306.3606.3916.421240
2506.4216.4526.4826.5126.5436.5736.6046.6346.6656.6956.726250
2606.7266.7566.7876.8176.8486.8786.9096.9396.9707.0007.031260
2707.0317.0617.0927.1227.1537.1847.2147.2457.2757.3067.336270
2807.3367.3677.3987.4287.4597.4897.5207.5507.5817.6127.642280
2907.6427.6737.7047.7347.7657.7957.8267.8577.8877.9187.949290
3007.9497.9798.0108.0418.0718.1028.1338.1638.1948.2258.255300
3108.2558.2868.3178.3478.3788.4098.4398.4708.5018.5328.562310
3208.5628.5938.6248.6548.6858.7168.7478.7778.8088.8398.869320
3308.8698.9008.9318.9628.9929.0239.0549.0859.1159.1469.177330
3409.1779.2089.2389.2699.3009.3319.3629.3929.4239.4549.485340
3509.4859.5159.5469.5779.6089.6399.6699.7009.7319.7629.793350
3609.7939.8239.8549.8859.9169.9479.97710.00810.03910.07010.101360
37010.10110.13110.16210.19310.22410.25510.28510.31610.34710.37810.409370
38010.40910.44010.47010.50110.53210.56310.59410.62510.65510.68610.717380
39010.71710.74810.77910.81010.84010.87110.90210.93310.96410.99511.025390
40011.02511.05611.08711.11811.14911.18011.21111.24111.27211.30311.334400
41011.33411.36511.39611.42611.45711.48811.51911.55011.58111.61211.642410
42011.64211.67311.70411.73511.76611.79711.82811.85811.88911.92011.951420
43011.95111.98212.01312.04412.07412.10512.13612.16712.19812.22912.260430
44012.26012.29012.32112.35212.38312.41412.44512.47612.50612.53712.568440
45012.56812.59912.63012.66112.69112.72212.75312.78412.81512.84612.877450
46012.87712.90712.93812.96913.00013.03113.06213.09313.12313.15413.185460
47013.18513.21613.24713.27813.30813.33913.37013.40113.43213.46313.494470
48013.49413.52413.55513.58613.61713.64813.67913.70913.74013.77113.802480
49013.80213.83313.86413.89413.92513.95613.98714.01814.04914.07914.110490
50014.11014.14114.17214.20314.23314.26414.29514.32614.35714.38814.418500
51014.41814.44914.48014.51114.54214.57314.60314.63414.66514.69614.727510
52014.72714.75714.78814.81914.85014.88114.91114.94214.97315.00415.035520
53015.03515.06515.09615.12715.15815.18915.21915.25015.28115.31215.343530
54015.34315.37315.40415.43515.46615.49615.52715.55815.58915.62015.650540
55015.65015.68115.71215.74315.77315.80415.83515.86615.89715.92715.958550
56015.95815.98916.02016.05016.08116.11216.14316.17316.20416.23516.266560
57016.26616.29616.32716.35816.38916.41916.45016.48116.51216.54216.573570
58016.57316.60416.63516.66516.69616.72716.75816.78816.81916.85016.881580
59016.88116.91116.94216.97317.00317.03417.06517.09617.12617.15717.188590
60017.18817.21917.24917.28017.31117.34117.37217.40317.43417.46417.495600
61017.49517.52617.55617.58717.61817.64917.67917.71017.74117.77117.802610
62017.80217.83317.86317.89417.92517.95517.98618.01718.04818.07818.109620
63018.10918.14018.17018.20118.23218.26218.29318.32418.35418.38518.416630
64018.41618.44618.47718.50818.53818.56918.60018.63018.66118.69218.722640
65018.72218.75318.78418.81418.84518.87618.90618.93718.96818.99819.029650
66019.02919.06019.09019.12119.15219.18219.21319.24419.27419.30519.336660
67019.33619.36619.39719.42819.45819.48919.52019.55019.58119.61219.642670
68019.64219.67319.70419.73419.76519.79519.82619.85719.88719.91819.949680
69019.94919.97920.01020.04120.07120.10220.13220.16320.19420.22420.255690
70020.25520.28620.31620.34720.37820.40820.43920.46920.50020.53120.561700
71020.56120.59220.62320.65320.68420.71520.74520.77620.80620.83720.868710
72020.86820.89820.92920.96020.99021.02121.05221.08221.11321.14321.174720
73021.17421.20521.23521.26621.29721.32721.35821.38921.41921.45021.480730
74021.48021.51121.54221.57221.60321.63421.66421.69521.72621.75621.787740
75021.78721.81721.84821.87921.90921.94021.97122.00122.03222.06322.093750
76022.09322.12422.15422.18522.21622.24622.27722.30822.33822.36922.400760
77022.40022.43022.46122.49222.52222.55322.58422.61422.64522.67622.706770
78022.70622.73722.76822.79822.82922.86022.89022.92122.95222.98223.013780
79023.01323.04423.07423.10523.13623.16623.19723.22823.25823.28923.320790
80023.32023.35023.38123.41223.44223.47323.50423.53523.56523.59623.627800
81023.62723.65723.68823.71923.74923.78023.81123.84223.87223.90323.934810
82023.93423.96423.99524.02624.05724.08724.11824.14924.18024.21024.241820
83024.24124.27224.30324.33324.36424.39524.42624.45624.48724.51824.549830
84024.54924.57924.61024.64124.67224.70224.73324.76424.79524.82624.856840
85024.85624.88724.91824.94924.97925.01025.04125.07225.10325.13425.164850
86025.16425.19525.22625.25725.28825.31825.34925.38025.41125.44225.473860
87025.47325.50425.53425.56525.59625.62725.65825.68925.72025.75025.781870
88025.78125.81225.84325.87425.90525.93625.96725.99826.02826.05926.090880
89026.09026.12126.15226.18326.21426.24526.27626.30726.33826.36926.400890
90026.40026.43126.46226.49326.52426.55526.58626.61726.64826.67926.710900
91026.71026.74126.77226.80326.83426.86526.89626.92726.95826.98927.020910
92027.02027.05127.08227.11327.14427.17527.20627.23727.26827.29927.330920
93027.33027.36227.39327.42427.45527.48627.51727.54827.57927.61027.642930
94027.64227.67327.70427.73527.76627.79727.82927.86027.89127.92227.953940
95027.95327.98528.01628.04728.07828.10928.14128.17228.20328.23428.266950
96028.26628.29728.32828.35928.39128.42228.45328.48528.51628.54728.579960
97028.57928.61028.64128.67228.70428.73528.76728.79828.82928.86128.892970
98028.89228.92328.95528.98629.01829.04929.08029.11229.14329.17529.206980
99029.20629.23829.26929.30129.33229.36329.39529.42629.45829.48929.521990
100029.52129.55229.58429.61629.64729.67929.71029.74229.77329.80529.8361000
101029.83629.86829.90029.93129.96329.99530.02630.05830.08930.12130.1531010
102030.15330.18430.21630.24830.27930.31130.34330.37530.40630.43830.4701020
103030.47030.50230.53330.56530.59730.62930.66030.69230.72430.75630.7881030
104030.78830.81930.85130.88330.91530.94730.97931.01131.04331.07431.1061040
105031.10631.13831.17031.20231.23431.26631.29831.33031.36231.39431.4261050
106031.42631.45831.49031.52231.55431.58631.61831.65031.68231.71431.7461060
107031.74631.77831.81131.84331.87531.90731.93931.97132.00332.03532.0681070
108032.06832.10032.13232.16432.19632.22932.26132.29332.32532.35832.3901080
109032.39032.42232.45532.48732.51932.55132.58432.61632.64832.68132.7131090
110032.71332.74632.77832.81032.84332.87532.90832.94032.97333.00533.0371100
111033.03733.07033.10233.13533.16733.20033.23233.26533.29833.33033.3631110
112033.36333.39533.42833.46033.49333.52633.55833.59133.62433.65633.6891120
113033.68933.72233.75433.78733.82033.85333.88533.91833.95133.98434.0161130
114034.01634.04934.08234.11534.14834.18034.21334.24634.27934.31234.3451140
115034.34534.37834.41134.44434.47634.50934.54234.57534.60834.64134.6741150
116034.67434.70734.74034.77334.80634.84034.87334.90634.93934.97235.0051160
117035.00535.03835.07135.10435.13835.17135.20435.23735.27035.30435.3371170
118035.33735.37035.40335.43735.47035.50335.53635.57035.60335.63635.6701180
119035.67035.70335.73635.77035.80335.83735.87035.90335.93735.97036.0041190
120036.00436.03736.07136.10436.13836.17136.20536.23836.27236.30536.3391200
121036.33936.37336.40636.44036.47336.50736.54136.57436.60836.64236.6751210
122036.67536.70936.74336.77736.81036.84436.87836.91236.94536.97937.0131220
123037.01337.04737.08137.11437.14837.18237.21637.25037.28437.31837.3521230
124037.35237.38637.42037.45437.48837.52237.55637.59037.62437.65837.6921240
125037.69237.72637.76037.79437.82837.86237.89637.93037.96437.99938.0331250
126038.03338.06738.10138.13538.16938.20438.23838.27238.30638.34138.3751260
127038.37538.40938.44438.47838.51238.54638.58138.61538.65038.68438.7181270
128038.71838.75338.78738.82238.85638.89038.92538.95938.99439.02839.0631280
129039.06339.09739.13239.16639.20139.23539.27039.30539.33939.37439.4081290
130039.40839.44339.47839.51239.54739.58239.61639.65139.68639.72039.7551300
131039.75539.79039.82539.85939.89439.92939.96439.99840.03340.06840.1031310
132040.10340.13840.17340.20740.24240.27740.31240.34740.38240.41740.4521320
133040.45240.48740.52240.55640.59140.62640.66140.69640.73140.76640.8011330
134040.80140.83640.87240.90740.94240.97741.01241.04741.08241.11741.1521340
135041.15241.18741.22241.25841.29341.32841.36341.39841.43341.46941.5041350
136041.50441.53941.57441.61041.64541.68041.71541.75141.78641.82141.8561360
137041.85641.89241.92741.96241.99842.03342.06842.10442.13942.17442.2101370
138042.21042.24542.28142.31642.35142.38742.42242.45842.49342.52842.5641380
139042.56442.59942.63542.67042.70642.74142.77742.81242.84842.88342.9191390
140042.91942.95442.99043.02543.06143.09643.13243.16743.20343.23943.2741400
141043.27443.31043.34643.38143.41743.45243.48843.52443.55943.59543.6311410
142043.63143.66743.70243.73843.77443.80943.84543.88143.91743.95343.9881420
143043.98844.02444.06044.09644.13144.16744.20344.23944.27544.31044.3461430
144044.34644.38244.41844.45444.49044.52544.56144.59744.63344.66944.7051440
145044.70544.74144.77744.81244.84844.88444.92044.95644.99245.02845.0641450
146045.06445.09945.13545.17145.20745.24345.27945.31545.35145.38745.4231460
147045.42345.45845.49445.53045.56645.60245.63845.67445.71045.74645.7821470
148045.78245.81845.85345.88945.92545.96145.99746.03346.06946.10546.1411480
149046.14146.17746.21246.24846.28446.32046.35646.39246.42846.46446.5001490
150046.50046.53546.57146.60746.64346.67946.71546.75146.78646.82246.8581500
151046.85846.89446.93046.96647.00147.03747.07347.10947.14547.18147.2161510
152047.21647.25247.28847.32447.35947.39547.43147.46747.50347.53847.5741520
153047.57447.61047.64647.68147.71747.75347.78847.82447.86047.89647.9311530
154047.93147.96748.00348.03848.07448.11048.14548.18148.21748.25248.2881540
155048.28848.32448.35948.39548.43048.46648.50248.53748.57348.60848.6441550
156048.64448.67948.71548.75048.78648.82248.85748.89348.92848.96448.9991560
157048.99949.03449.07049.10549.14149.17649.21249.24749.28349.31849.3531570
158049.35349.38949.42449.46049.49549.53049.56649.60149.63649.67249.7071580
159049.70749.74249.77849.81349.84849.88349.91949.95449.98950.02450.0601590
160050.06050.09550.13050.16550.20050.23550.27150.30650.34150.37650.4111600
161050.41150.44650.48150.51750.55250.58750.62250.65750.69250.72750.7621610
162050.76250.79750.83250.86750.90250.93750.97251.00751.04251.07751.1121620
163051.11251.14751.18151.21651.25151.28651.32151.35651.39151.42551.4601630
164051.46051.49551.53051.56551.59951.63451.66951.70451.73851.77351.8081640
165051.80851.84351.87751.91251.94751.98152.01652.05152.08552.12052.1541650
166052.15452.18952.22452.25852.29352.32752.36252.39652.43152.46552.5001660
167052.50052.53452.56952.60352.63852.67252.70752.74152.77652.81052.8441670
168052.84452.87952.91352.94752.98253.01653.05053.08553.11953.15353.1881680
169053.18853.22253.25653.29053.32553.35953.39353.42753.46253.49653.5301690
170053.53053.56453.59853.63253.66753.70153.73553.76953.80353.83753.8711700
171053.87153.90553.93953.97354.00754.04154.07554.10954.14354.17754.2111710
172054.21154.24554.27954.31354.34754.38154.41554.44954.48354.51654.5501720
173054.55054.58454.61854.65254.68654.71954.75354.78754.82154.85554.8881730
174054.88854.92254.95654.99055.02355.05755.09155.12455.15855.19255.2251740
175055.22555.25955.29355.32655.36055.39355.42755.46155.49455.52855.5611750
176055.56155.59555.62855.66255.69555.72955.76255.79655.82955.86355.8961760
177055.89655.93055.96355.99756.03056.06356.09756.13056.16456.19756.2301770
178056.23056.26456.29756.33056.36456.39756.43056.46456.49756.53056.5641780
179056.56456.59756.63056.66356.69756.73056.76356.79656.82956.86356.8961790
180056.89656.92956.96256.99557.02857.06257.09557.12857.16157.19457.2271800
181057.22757.26057.29357.32657.36057.39357.42657.45957.49257.52557.5581810
182057.55857.59157.62457.65757.69057.72357.75657.78957.82257.85557.8881820
183057.88857.92057.95357.98658.01958.05258.08558.11858.15158.18458.2171830
184058.21758.24958.28258.31558.34858.38158.41458.44658.47958.51258.5451840
185058.54558.57858.61058.64358.67658.70958.74158.77458.80758.84058.8721850
186058.87258.90558.93858.97159.00359.03659.06959.10159.13459.16759.1991860
187059.19959.23259.26559.29759.33059.36359.39559.42859.46059.49359.5261870
188059.52659.55859.59159.62359.65659.68959.72159.75459.78659.81959.8511880
189059.85159.88459.91659.94959.98260.01460.04760.07960.11260.14460.1771890
190060.17760.20960.24260.27460.30760.33960.37160.40460.43660.46960.5011900
191060.50160.53460.56660.59960.63160.66360.69660.72860.76160.79360.8261910
192060.82660.85860.89060.92360.95560.98761.02061.05261.08561.11761.1491920
193061.14961.18261.21461.24661.27961.31161.34361.37661.40861.44061.4731930
194061.47361.50561.53761.57061.60261.63461.66761.69961.73161.76361.7961940
195061.79661.82861.86061.89361.92561.95761.98962.02262.05462.08662.1181950
196062.11862.15162.18362.21562.24762.28062.31262.34462.37662.40962.4411960
197062.44162.47362.50562.53762.57062.60262.63462.66662.69962.73162.7631970
198062.76362.79562.82762.86062.89262.92462.95662.98863.02063.05363.0851980
199063.08563.11763.14963.18163.21463.24663.27863.31063.34263.37463.4061990
200063.40663.43963.47163.50363.53563.56763.59963.63263.66463.69663.7282000
201063.72863.76063.79263.82463.85663.88963.92163.95363.98564.01764.0492010
202064.04964.08164.11364.14664.17864.21064.24264.27464.30664.33864.3702020
203064.37064.40264.43564.46764.49964.53164.56364.59564.62764.65964.6912030
204064.69164.72364.75664.78864.82064.85264.88464.91664.94864.98065.0122040
205065.01265.04465.07665.10965.14165.17365.20565.23765.26965.30165.3332050
206065.33365.36565.39765.42965.46165.49365.52565.55765.59065.62265.6542060
207065.65465.68665.71865.75065.78265.81465.84665.87865.91065.94265.9742070
208065.97466.00666.03866.07066.10266.13466.16666.19966.23166.26366.2952080
209066.29566.32766.35966.39166.42366.45566.48766.51966.55166.58366.6152090
210066.61566.64766.67966.71166.74366.77566.80766.83966.87166.90366.9352100
211066.93566.96766.99967.03167.06367.09567.12767.15967.19167.22367.2552110
212067.25567.28767.31967.35167.38367.41567.44767.47967.51167.54367.5752120
213067.57567.60767.63967.67167.70367.73567.76767.79967.83167.86367.8952130
214067.89567.92767.95967.99168.02368.05568.08768.11968.15068.18268.2142140
215068.21468.24668.27868.31068.34268.37468.40668.43868.47068.50268.5342150
216068.53468.56668.59768.62968.66168.69368.72568.75768.78968.82168.8532160
217068.85368.88468.91668.94868.98069.01269.04469.07669.10869.13969.1712170
218069.17169.20369.23569.26769.29969.33069.36269.39469.42669.45869.4902180
219069.49069.52169.5532190
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