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Type T Thermocouple Table (mV vs °C)

Full Type T Thermocouple Table from −270 to 400 °C in 1 °C steps. Values are the thermoelectric voltage in mV with the reference junction at 0 °C.

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Type a value to read the table instantly. Values between table points are interpolated linearly.

Type T Thermocouple Table, EMF in mV (reference junction 0 °C)

°C+0+1+2+3+4+5+6+7+8+9
−270−6.258−6.256−6.255−6.253−6.251−6.248−6.245−6.242−6.239−6.236
−260−6.232−6.228−6.223−6.219−6.214−6.209−6.204−6.198−6.193−6.187
−250−6.180−6.174−6.167−6.160−6.153−6.146−6.138−6.130−6.122−6.114
−240−6.105−6.096−6.087−6.078−6.068−6.059−6.049−6.038−6.028−6.017
−230−6.007−5.996−5.985−5.973−5.962−5.950−5.938−5.926−5.914−5.901
−220−5.888−5.876−5.863−5.850−5.836−5.823−5.809−5.795−5.782−5.767
−210−5.753−5.739−5.724−5.710−5.695−5.680−5.665−5.650−5.634−5.619
−200−5.603−5.587−5.571−5.555−5.539−5.523−5.506−5.489−5.473−5.456
−190−5.439−5.421−5.404−5.387−5.369−5.351−5.334−5.316−5.297−5.279
−180−5.261−5.242−5.224−5.205−5.186−5.167−5.148−5.128−5.109−5.089
−170−5.070−5.050−5.030−5.010−4.989−4.969−4.949−4.928−4.907−4.886
−160−4.865−4.844−4.823−4.802−4.780−4.759−4.737−4.715−4.693−4.671
−150−4.648−4.626−4.604−4.581−4.558−4.535−4.512−4.489−4.466−4.443
−140−4.419−4.395−4.372−4.348−4.324−4.300−4.275−4.251−4.226−4.202
−130−4.177−4.152−4.127−4.102−4.077−4.052−4.026−4.000−3.975−3.949
−120−3.923−3.897−3.871−3.844−3.818−3.791−3.765−3.738−3.711−3.684
−110−3.657−3.629−3.602−3.574−3.547−3.519−3.491−3.463−3.435−3.407
−100−3.379−3.350−3.322−3.293−3.264−3.235−3.206−3.177−3.148−3.118
−90−3.089−3.059−3.030−3.000−2.970−2.940−2.910−2.879−2.849−2.818
−80−2.788−2.757−2.726−2.695−2.664−2.633−2.602−2.571−2.539−2.507
−70−2.476−2.444−2.412−2.380−2.348−2.316−2.283−2.251−2.218−2.186
−60−2.153−2.120−2.087−2.054−2.021−1.987−1.954−1.920−1.887−1.853
−50−1.819−1.785−1.751−1.717−1.683−1.648−1.614−1.579−1.545−1.510
−40−1.475−1.440−1.405−1.370−1.335−1.299−1.264−1.228−1.192−1.157
−30−1.121−1.085−1.049−1.013−0.976−0.940−0.904−0.867−0.830−0.794
−20−0.757−0.720−0.683−0.646−0.608−0.571−0.534−0.496−0.459−0.421
−10−0.383−0.345−0.307−0.269−0.231−0.193−0.154−0.116−0.077−0.039
00.0000.0390.0780.1170.1560.1950.2340.2730.3120.352
100.3910.4310.4700.5100.5490.5890.6290.6690.7090.749
200.7900.8300.8700.9110.9510.9921.0331.0741.1141.155
301.1961.2381.2791.3201.3621.4031.4451.4861.5281.570
401.6121.6541.6961.7381.7801.8231.8651.9081.9501.993
502.0362.0792.1222.1652.2082.2512.2942.3382.3812.425
602.4682.5122.5562.6002.6432.6872.7322.7762.8202.864
702.9092.9532.9983.0433.0873.1323.1773.2223.2673.312
803.3583.4033.4483.4943.5393.5853.6313.6773.7223.768
903.8143.8603.9073.9533.9994.0464.0924.1384.1854.232
1004.2794.3254.3724.4194.4664.5134.5614.6084.6554.702
1104.7504.7984.8454.8934.9414.9885.0365.0845.1325.180
1205.2285.2775.3255.3735.4225.4705.5195.5675.6165.665
1305.7145.7635.8125.8615.9105.9596.0086.0576.1076.156
1406.2066.2556.3056.3556.4046.4546.5046.5546.6046.654
1506.7046.7546.8056.8556.9056.9567.0067.0577.1077.158
1607.2097.2607.3107.3617.4127.4637.5157.5667.6177.668
1707.7207.7717.8237.8747.9267.9778.0298.0818.1338.185
1808.2378.2898.3418.3938.4458.4978.5508.6028.6548.707
1908.7598.8128.8658.9178.9709.0239.0769.1299.1829.235
2009.2889.3419.3959.4489.5019.5559.6089.6629.7159.769
2109.8229.8769.9309.98410.03810.09210.14610.20010.25410.308
22010.36210.41710.47110.52510.58010.63410.68910.74310.79810.853
23010.90710.96211.01711.07211.12711.18211.23711.29211.34711.403
24011.45811.51311.56911.62411.68011.73511.79111.84611.90211.958
25012.01312.06912.12512.18112.23712.29312.34912.40512.46112.518
26012.57412.63012.68712.74312.79912.85612.91212.96913.02613.082
27013.13913.19613.25313.31013.36613.42313.48013.53713.59513.652
28013.70913.76613.82313.88113.93813.99514.05314.11014.16814.226
29014.28314.34114.39914.45614.51414.57214.63014.68814.74614.804
30014.86214.92014.97815.03615.09515.15315.21115.27015.32815.386
31015.44515.50315.56215.62115.67915.73815.79715.85615.91415.973
32016.03216.09116.15016.20916.26816.32716.38716.44616.50516.564
33016.62416.68316.74216.80216.86116.92116.98017.04017.10017.159
34017.21917.27917.33917.39917.45817.51817.57817.63817.69817.759
35017.81917.87917.93917.99918.06018.12018.18018.24118.30118.362
36018.42218.48318.54318.60418.66518.72518.78618.84718.90818.969
37019.03019.09119.15219.21319.27419.33519.39619.45719.51819.579
38019.64119.70219.76319.82519.88619.94720.00920.07020.13220.193
39020.25520.31720.37820.44020.50220.56320.62520.68720.74820.810
40020.872
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About this Table

Full Type T Thermocouple Table from −270 to 400 °C in 1 °C steps. Values are the thermoelectric voltage in mV with the reference junction at 0 °C.

Basis: NIST ITS 90 reference functions as adopted in IEC 60584 1. Type T is Copper vs Copper Nickel (Constantan): the best choice for low and cryogenic temperatures.

How to use

  1. Find the row for the tens of degrees, then move across to the units column: row 120, column +4 is 124 °C.
  2. For negative rows the column is still added: row −20, column +4 is −16 °C.
  3. To read temperature from a measured mV, add the mV for the terminal temperature first (cold junction compensation), then find the total in the table.

Notes

  • IEC colour code: brown positive wire with white negative. ANSI MC96.1: blue jacket.
  • Values are reference values; real sensors have a tolerance class (see the thermocouple tolerance table).

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Frequently Asked Questions

What is the mV of a type T thermocouple at 100 °C?

4.279 mV with the reference junction at 0 °C.

What is the range of a type T thermocouple?

The reference function covers −270 to 400 °C. The practical service range is narrower and depends on wire size and sheath.

Why do I need cold junction compensation?

The table assumes the reference junction is at 0 °C. At the terminals it is warmer, so add the mV for the terminal temperature before reading the table.

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