Temperature Measurement · Free Calculator
Pt100 Table (Resistance vs Temperature)
Resistance of platinum RTDs at every 1 °C from −200 to 850 °C, calculated with the IEC 60751 Callendar–Van Dusen equation (α = 0.00385).
Pt100, Pt200, Pt500, Pt10001 °C resolutionIEC 60751Print and CSV
Pt100 Resistance Table (ohms), IEC 60751, α = 0.00385
| °C | 0 | −1 | −2 | −3 | −4 | −5 | −6 | −7 | −8 | −9 |
|---|---|---|---|---|---|---|---|---|---|---|
| −0 | 100.00 | 99.61 | 99.22 | 98.83 | 98.44 | 98.04 | 97.65 | 97.26 | 96.87 | 96.48 |
| −10 | 96.09 | 95.69 | 95.30 | 94.91 | 94.52 | 94.12 | 93.73 | 93.34 | 92.95 | 92.55 |
| −20 | 92.16 | 91.77 | 91.37 | 90.98 | 90.59 | 90.19 | 89.80 | 89.40 | 89.01 | 88.62 |
| −30 | 88.22 | 87.83 | 87.43 | 87.04 | 86.64 | 86.25 | 85.85 | 85.46 | 85.06 | 84.67 |
| −40 | 84.27 | 83.87 | 83.48 | 83.08 | 82.69 | 82.29 | 81.89 | 81.50 | 81.10 | 80.70 |
| −50 | 80.31 | 79.91 | 79.51 | 79.11 | 78.72 | 78.32 | 77.92 | 77.52 | 77.12 | 76.73 |
| −60 | 76.33 | 75.93 | 75.53 | 75.13 | 74.73 | 74.33 | 73.93 | 73.53 | 73.13 | 72.73 |
| −70 | 72.33 | 71.93 | 71.53 | 71.13 | 70.73 | 70.33 | 69.93 | 69.53 | 69.13 | 68.73 |
| −80 | 68.33 | 67.92 | 67.52 | 67.12 | 66.72 | 66.31 | 65.91 | 65.51 | 65.11 | 64.70 |
| −90 | 64.30 | 63.90 | 63.49 | 63.09 | 62.68 | 62.28 | 61.88 | 61.47 | 61.07 | 60.66 |
| −100 | 60.26 | 59.85 | 59.44 | 59.04 | 58.63 | 58.23 | 57.82 | 57.41 | 57.01 | 56.60 |
| −110 | 56.19 | 55.79 | 55.38 | 54.97 | 54.56 | 54.15 | 53.75 | 53.34 | 52.93 | 52.52 |
| −120 | 52.11 | 51.70 | 51.29 | 50.88 | 50.47 | 50.06 | 49.65 | 49.24 | 48.83 | 48.42 |
| −130 | 48.00 | 47.59 | 47.18 | 46.77 | 46.36 | 45.94 | 45.53 | 45.12 | 44.70 | 44.29 |
| −140 | 43.88 | 43.46 | 43.05 | 42.63 | 42.22 | 41.80 | 41.39 | 40.97 | 40.56 | 40.14 |
| −150 | 39.72 | 39.31 | 38.89 | 38.47 | 38.05 | 37.64 | 37.22 | 36.80 | 36.38 | 35.96 |
| −160 | 35.54 | 35.12 | 34.70 | 34.28 | 33.86 | 33.44 | 33.02 | 32.60 | 32.18 | 31.76 |
| −170 | 31.34 | 30.91 | 30.49 | 30.07 | 29.64 | 29.22 | 28.80 | 28.37 | 27.95 | 27.52 |
| −180 | 27.10 | 26.67 | 26.24 | 25.82 | 25.39 | 24.97 | 24.54 | 24.11 | 23.68 | 23.25 |
| −190 | 22.83 | 22.40 | 21.97 | 21.54 | 21.11 | 20.68 | 20.25 | 19.82 | 19.38 | 18.95 |
| −200 | 18.52 |
| °C | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 100.00 | 100.39 | 100.78 | 101.17 | 101.56 | 101.95 | 102.34 | 102.73 | 103.12 | 103.51 |
| 10 | 103.90 | 104.29 | 104.68 | 105.07 | 105.46 | 105.85 | 106.24 | 106.63 | 107.02 | 107.40 |
| 20 | 107.79 | 108.18 | 108.57 | 108.96 | 109.35 | 109.73 | 110.12 | 110.51 | 110.90 | 111.29 |
| 30 | 111.67 | 112.06 | 112.45 | 112.83 | 113.22 | 113.61 | 114.00 | 114.38 | 114.77 | 115.15 |
| 40 | 115.54 | 115.93 | 116.31 | 116.70 | 117.08 | 117.47 | 117.86 | 118.24 | 118.63 | 119.01 |
| 50 | 119.40 | 119.78 | 120.17 | 120.55 | 120.94 | 121.32 | 121.71 | 122.09 | 122.47 | 122.86 |
| 60 | 123.24 | 123.63 | 124.01 | 124.39 | 124.78 | 125.16 | 125.54 | 125.93 | 126.31 | 126.69 |
| 70 | 127.08 | 127.46 | 127.84 | 128.22 | 128.61 | 128.99 | 129.37 | 129.75 | 130.13 | 130.52 |
| 80 | 130.90 | 131.28 | 131.66 | 132.04 | 132.42 | 132.80 | 133.18 | 133.57 | 133.95 | 134.33 |
| 90 | 134.71 | 135.09 | 135.47 | 135.85 | 136.23 | 136.61 | 136.99 | 137.37 | 137.75 | 138.13 |
| 100 | 138.51 | 138.88 | 139.26 | 139.64 | 140.02 | 140.40 | 140.78 | 141.16 | 141.54 | 141.91 |
| 110 | 142.29 | 142.67 | 143.05 | 143.43 | 143.80 | 144.18 | 144.56 | 144.94 | 145.31 | 145.69 |
| 120 | 146.07 | 146.44 | 146.82 | 147.20 | 147.57 | 147.95 | 148.33 | 148.70 | 149.08 | 149.46 |
| 130 | 149.83 | 150.21 | 150.58 | 150.96 | 151.33 | 151.71 | 152.08 | 152.46 | 152.83 | 153.21 |
| 140 | 153.58 | 153.96 | 154.33 | 154.71 | 155.08 | 155.46 | 155.83 | 156.20 | 156.58 | 156.95 |
| 150 | 157.33 | 157.70 | 158.07 | 158.45 | 158.82 | 159.19 | 159.56 | 159.94 | 160.31 | 160.68 |
| 160 | 161.05 | 161.43 | 161.80 | 162.17 | 162.54 | 162.91 | 163.29 | 163.66 | 164.03 | 164.40 |
| 170 | 164.77 | 165.14 | 165.51 | 165.89 | 166.26 | 166.63 | 167.00 | 167.37 | 167.74 | 168.11 |
| 180 | 168.48 | 168.85 | 169.22 | 169.59 | 169.96 | 170.33 | 170.70 | 171.07 | 171.43 | 171.80 |
| 190 | 172.17 | 172.54 | 172.91 | 173.28 | 173.65 | 174.02 | 174.38 | 174.75 | 175.12 | 175.49 |
| 200 | 175.86 | 176.22 | 176.59 | 176.96 | 177.33 | 177.69 | 178.06 | 178.43 | 178.79 | 179.16 |
| 210 | 179.53 | 179.89 | 180.26 | 180.63 | 180.99 | 181.36 | 181.72 | 182.09 | 182.46 | 182.82 |
| 220 | 183.19 | 183.55 | 183.92 | 184.28 | 184.65 | 185.01 | 185.38 | 185.74 | 186.11 | 186.47 |
| 230 | 186.84 | 187.20 | 187.56 | 187.93 | 188.29 | 188.66 | 189.02 | 189.38 | 189.75 | 190.11 |
| 240 | 190.47 | 190.84 | 191.20 | 191.56 | 191.92 | 192.29 | 192.65 | 193.01 | 193.37 | 193.74 |
| 250 | 194.10 | 194.46 | 194.82 | 195.18 | 195.55 | 195.91 | 196.27 | 196.63 | 196.99 | 197.35 |
| 260 | 197.71 | 198.07 | 198.43 | 198.79 | 199.15 | 199.51 | 199.87 | 200.23 | 200.59 | 200.95 |
| 270 | 201.31 | 201.67 | 202.03 | 202.39 | 202.75 | 203.11 | 203.47 | 203.83 | 204.19 | 204.55 |
| 280 | 204.90 | 205.26 | 205.62 | 205.98 | 206.34 | 206.70 | 207.05 | 207.41 | 207.77 | 208.13 |
| 290 | 208.48 | 208.84 | 209.20 | 209.56 | 209.91 | 210.27 | 210.63 | 210.98 | 211.34 | 211.70 |
| 300 | 212.05 | 212.41 | 212.76 | 213.12 | 213.48 | 213.83 | 214.19 | 214.54 | 214.90 | 215.25 |
| 310 | 215.61 | 215.96 | 216.32 | 216.67 | 217.03 | 217.38 | 217.74 | 218.09 | 218.44 | 218.80 |
| 320 | 219.15 | 219.51 | 219.86 | 220.21 | 220.57 | 220.92 | 221.27 | 221.63 | 221.98 | 222.33 |
| 330 | 222.68 | 223.04 | 223.39 | 223.74 | 224.09 | 224.45 | 224.80 | 225.15 | 225.50 | 225.85 |
| 340 | 226.21 | 226.56 | 226.91 | 227.26 | 227.61 | 227.96 | 228.31 | 228.66 | 229.02 | 229.37 |
| 350 | 229.72 | 230.07 | 230.42 | 230.77 | 231.12 | 231.47 | 231.82 | 232.17 | 232.52 | 232.87 |
| 360 | 233.21 | 233.56 | 233.91 | 234.26 | 234.61 | 234.96 | 235.31 | 235.66 | 236.00 | 236.35 |
| 370 | 236.70 | 237.05 | 237.40 | 237.74 | 238.09 | 238.44 | 238.79 | 239.13 | 239.48 | 239.83 |
| 380 | 240.18 | 240.52 | 240.87 | 241.22 | 241.56 | 241.91 | 242.26 | 242.60 | 242.95 | 243.29 |
| 390 | 243.64 | 243.99 | 244.33 | 244.68 | 245.02 | 245.37 | 245.71 | 246.06 | 246.40 | 246.75 |
| 400 | 247.09 | 247.44 | 247.78 | 248.13 | 248.47 | 248.81 | 249.16 | 249.50 | 249.85 | 250.19 |
| 410 | 250.53 | 250.88 | 251.22 | 251.56 | 251.91 | 252.25 | 252.59 | 252.93 | 253.28 | 253.62 |
| 420 | 253.96 | 254.30 | 254.65 | 254.99 | 255.33 | 255.67 | 256.01 | 256.35 | 256.70 | 257.04 |
| 430 | 257.38 | 257.72 | 258.06 | 258.40 | 258.74 | 259.08 | 259.42 | 259.76 | 260.10 | 260.44 |
| 440 | 260.78 | 261.12 | 261.46 | 261.80 | 262.14 | 262.48 | 262.82 | 263.16 | 263.50 | 263.84 |
| 450 | 264.18 | 264.52 | 264.86 | 265.20 | 265.53 | 265.87 | 266.21 | 266.55 | 266.89 | 267.22 |
| 460 | 267.56 | 267.90 | 268.24 | 268.57 | 268.91 | 269.25 | 269.59 | 269.92 | 270.26 | 270.60 |
| 470 | 270.93 | 271.27 | 271.61 | 271.94 | 272.28 | 272.61 | 272.95 | 273.29 | 273.62 | 273.96 |
| 480 | 274.29 | 274.63 | 274.96 | 275.30 | 275.63 | 275.97 | 276.30 | 276.64 | 276.97 | 277.31 |
| 490 | 277.64 | 277.98 | 278.31 | 278.64 | 278.98 | 279.31 | 279.64 | 279.98 | 280.31 | 280.64 |
| 500 | 280.98 | 281.31 | 281.64 | 281.98 | 282.31 | 282.64 | 282.97 | 283.31 | 283.64 | 283.97 |
| 510 | 284.30 | 284.63 | 284.97 | 285.30 | 285.63 | 285.96 | 286.29 | 286.62 | 286.95 | 287.29 |
| 520 | 287.62 | 287.95 | 288.28 | 288.61 | 288.94 | 289.27 | 289.60 | 289.93 | 290.26 | 290.59 |
| 530 | 290.92 | 291.25 | 291.58 | 291.91 | 292.24 | 292.56 | 292.89 | 293.22 | 293.55 | 293.88 |
| 540 | 294.21 | 294.54 | 294.86 | 295.19 | 295.52 | 295.85 | 296.18 | 296.50 | 296.83 | 297.16 |
| 550 | 297.49 | 297.81 | 298.14 | 298.47 | 298.80 | 299.12 | 299.45 | 299.78 | 300.10 | 300.43 |
| 560 | 300.75 | 301.08 | 301.41 | 301.73 | 302.06 | 302.38 | 302.71 | 303.03 | 303.36 | 303.69 |
| 570 | 304.01 | 304.34 | 304.66 | 304.98 | 305.31 | 305.63 | 305.96 | 306.28 | 306.61 | 306.93 |
| 580 | 307.25 | 307.58 | 307.90 | 308.23 | 308.55 | 308.87 | 309.20 | 309.52 | 309.84 | 310.16 |
| 590 | 310.49 | 310.81 | 311.13 | 311.45 | 311.78 | 312.10 | 312.42 | 312.74 | 313.06 | 313.39 |
| 600 | 313.71 | 314.03 | 314.35 | 314.67 | 314.99 | 315.31 | 315.64 | 315.96 | 316.28 | 316.60 |
| 610 | 316.92 | 317.24 | 317.56 | 317.88 | 318.20 | 318.52 | 318.84 | 319.16 | 319.48 | 319.80 |
| 620 | 320.12 | 320.43 | 320.75 | 321.07 | 321.39 | 321.71 | 322.03 | 322.35 | 322.67 | 322.98 |
| 630 | 323.30 | 323.62 | 323.94 | 324.26 | 324.57 | 324.89 | 325.21 | 325.53 | 325.84 | 326.16 |
| 640 | 326.48 | 326.79 | 327.11 | 327.43 | 327.74 | 328.06 | 328.38 | 328.69 | 329.01 | 329.32 |
| 650 | 329.64 | 329.96 | 330.27 | 330.59 | 330.90 | 331.22 | 331.53 | 331.85 | 332.16 | 332.48 |
| 660 | 332.79 | 333.11 | 333.42 | 333.74 | 334.05 | 334.36 | 334.68 | 334.99 | 335.31 | 335.62 |
| 670 | 335.93 | 336.25 | 336.56 | 336.87 | 337.18 | 337.50 | 337.81 | 338.12 | 338.44 | 338.75 |
| 680 | 339.06 | 339.37 | 339.69 | 340.00 | 340.31 | 340.62 | 340.93 | 341.24 | 341.56 | 341.87 |
| 690 | 342.18 | 342.49 | 342.80 | 343.11 | 343.42 | 343.73 | 344.04 | 344.35 | 344.66 | 344.97 |
| 700 | 345.28 | 345.59 | 345.90 | 346.21 | 346.52 | 346.83 | 347.14 | 347.45 | 347.76 | 348.07 |
| 710 | 348.38 | 348.69 | 348.99 | 349.30 | 349.61 | 349.92 | 350.23 | 350.54 | 350.84 | 351.15 |
| 720 | 351.46 | 351.77 | 352.08 | 352.38 | 352.69 | 353.00 | 353.30 | 353.61 | 353.92 | 354.22 |
| 730 | 354.53 | 354.84 | 355.14 | 355.45 | 355.76 | 356.06 | 356.37 | 356.67 | 356.98 | 357.28 |
| 740 | 357.59 | 357.90 | 358.20 | 358.51 | 358.81 | 359.12 | 359.42 | 359.72 | 360.03 | 360.33 |
| 750 | 360.64 | 360.94 | 361.25 | 361.55 | 361.85 | 362.16 | 362.46 | 362.76 | 363.07 | 363.37 |
| 760 | 363.67 | 363.98 | 364.28 | 364.58 | 364.89 | 365.19 | 365.49 | 365.79 | 366.10 | 366.40 |
| 770 | 366.70 | 367.00 | 367.30 | 367.60 | 367.91 | 368.21 | 368.51 | 368.81 | 369.11 | 369.41 |
| 780 | 369.71 | 370.01 | 370.31 | 370.61 | 370.91 | 371.21 | 371.51 | 371.81 | 372.11 | 372.41 |
| 790 | 372.71 | 373.01 | 373.31 | 373.61 | 373.91 | 374.21 | 374.51 | 374.81 | 375.11 | 375.41 |
| 800 | 375.70 | 376.00 | 376.30 | 376.60 | 376.90 | 377.19 | 377.49 | 377.79 | 378.09 | 378.39 |
| 810 | 378.68 | 378.98 | 379.28 | 379.57 | 379.87 | 380.17 | 380.46 | 380.76 | 381.06 | 381.35 |
| 820 | 381.65 | 381.95 | 382.24 | 382.54 | 382.83 | 383.13 | 383.42 | 383.72 | 384.01 | 384.31 |
| 830 | 384.60 | 384.90 | 385.19 | 385.49 | 385.78 | 386.08 | 386.37 | 386.67 | 386.96 | 387.25 |
| 840 | 387.55 | 387.84 | 388.14 | 388.43 | 388.72 | 389.02 | 389.31 | 389.60 | 389.90 | 390.19 |
| 850 | 390.48 |
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How to Use the Pt100 Table
Find the row for the tens of degrees and the column for the units. For example, 37 °C is in the row for 30 and the column headed 7: 114.38 Ω. Below zero, the columns count down, so −45 °C is row −40, column −5: 82.29 Ω.
For Pt1000 sensors every value is exactly ten times the Pt100 value, and for Pt500 it is five times.
R(t) = R0 × (1 + A·t + B·t²) for t ≥ 0 °C
A = 3.9083 × 10⁻³, B = −5.775 × 10⁻⁷
A = 3.9083 × 10⁻³, B = −5.775 × 10⁻⁷
Quick field check: a healthy Pt100 reads about 108 to 110 Ω at room temperature. An open circuit, a reading of a few ohms, or a value that does not change when you warm the sensor in your hand all point to a damaged element or wiring fault. Use the RTD calculator to convert any reading exactly.
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Frequently Asked Questions
What standard is this Pt100 table based on?
IEC 60751 (also published as EN 60751), which defines the Callendar–Van Dusen coefficients for industrial platinum resistance thermometers with α = 0.00385.
What is the Pt100 resistance at 100 °C?
138.5055 Ω. At 200 °C it is 175.8560 Ω and at 400 °C it is 247.0920 Ω.
Can I use this table for a Pt1000?
Yes. Select Pt1000 in the menu, or multiply any Pt100 value by ten.
Why is the table not perfectly linear?
The B and C terms in the Callendar–Van Dusen equation describe the slight curvature of platinum resistance. Sensitivity drops from about 0.39 Ω/°C at 0 °C to about 0.30 Ω/°C at 850 °C for a Pt100.
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