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Temperature Conversion Tables

The Celsius (Centigrade) temperature scale is in common use for almost all practical purposes. However, the kelvin has been selected as the SI unit for temperature.  The kelvin as a unit of temperature is equal to a Celsius unit; however the celsius scale uses the freezing point of water as zero whilst the Kelvin scale is based on absolute zero.  The imperial system uses the fahrenheit scale, based on the freezing point of water as 32° and the boiling point as 212°, the absolute scale using Fahrenheit units is known as the Rankin scale. The following chart expresses the conversion formula and relationship between the four recognised temperature scales.

Conversion Formulas
Celsius Kelvin Fahrenheit Rankin
Centigrade °C °C + 273.16 (°C × 1.8) + 32 (°C × 1.8) + 491.67
Kelvin K - 273.15 K (K × 1.8) - 459.67 K × 1.8
Fahrenheit (°F - 32) / 1.8 ((°F + 459.67) / 1.8) °F °F + 459.67
Rankin (°R - 491.67) / 1.8 °R / 1.8 °R - 459.67 °R

Temperature Lookup Table

The following table shows the relationship over a range of temperatures of the four recognised temperature scales, using Celsius as the base.

Celsius (°C) Kelvin (K) Fahrenheit (°F) Rankin (°R) Celsius (°C) Kelvin (K) Fahrenheit (°F) Rankin (°R)
-273.16 0.00 -459.69 0.00 130 403.16 266.00 725.67
-250 23.16 -418.00 41.67 140 413.16 284.00 743.67
-200 73.16 -328.00 131.67 150 423.16 302.00 761.67
-150 123.16 -238.00 221.67 160 433.16 320.00 779.67
-100 173.16 -148.00 311.67 170 443.16 338.00 797.67
-50 223.16 -58.00 401.67 180 453.16 356.00 815.67
-40 233.16 -40.00 419.67 190 463.16 374.00 833.67
-30 243.16 -22.00 437.67 200 473.16 392.00 851.67
-20 253.16 -4.00 455.67 250 523.16 482.00 941.67
-17.78 255.38 0.00 459.67 300 573.16 572.00 1031.67
-10 263.16 14.00 473.67 350 623.16 662.00 1121.67
0 273.16 32.00 491.67 400 673.16 752.00 1211.67
5 278.16 41.00 500.67 450 723.16 842.00 1301.67
10 283.16 50.00 509.67 500 773.16 932.00 1391.67
15 288.16 59.00 518.67 550 823.16 1022.00 1481.67
20 293.16 68.00 527.67 600 873.16 1112.00 1571.67
25 298.16 77.00 536.67 650 923.16 1202.00 1661.67
30 303.16 86.00 545.67 700 973.16 1292.00 1751.67
35 308.16 95.00 554.67 750 1023.16 1382.00 1841.67
40 313.16 104.00 563.67 800 1073.16 1472.00 1931.67
45 318.16 113.00 572.67 850 1123.16 1562.00 2021.67
50 323.16 122.00 581.67 900 1173.16 1652.00 2111.67
55 328.16 131.00 590.67 950 1223.16 1742.00 2201.67
60 333.16 140.00 599.67 1000 1273.16 1832.00 2291.67
65 338.16 149.00 608.67 1050 1323.16 1922.00 2381.67
70 343.16 158.00 617.67 1100 1373.16 2012.00 2471.67
75 348.16 167.00 626.67 1150 1423.16 2102.00 2561.67
80 353.16 176.00 635.67 1200 1473.16 2192.00 2651.67
85 358.16 185.00 644.67 1250 1523.16 2282.00 2741.67
90 363.16 194.00 653.67 1300 1573.16 2372.00 2831.67
95 368.16 203.00 662.67 1350 1623.16 2462.00 2921.67
100 373.16 212.00 671.67 1400 1673.16 2552.00 3011.67
110 383.16 231.00 691.67 1500 1773.16 2732.00 3191.67
120 393.16 248.00 707.67 1600 1873.16 2912.00 3371.67
130 403.16 266.00 725.67 1700 1973.16 3092.00 3551.67
140 413.16 284.00 743.67 1800 2073.16 3272.00 3731.67
150 423.16 302.00 761.67 1900 2173.16 3452.00 3911.67
160 433.16 320.00 779.67 2000 2273.16 3632.00 4091.67

Optimising Thermal Processes with Precision: A Vital Resource for Combustion Engineers

For combustion engineers striving to enhance efficiency and optimise thermal processes, our comprehensive temperature conversion tables are indispensable.

The tables above provide immediate access to precise conversions across Celsius, Kelvin, Fahrenheit, and Rankin scales, which are crucial for accurate temperature monitoring and control in industrial applications. In working out the exact calculations of thermal inputs and outputs in diverse measurement units, we enable engineers to fine-tune combustion systems, ensuring optimal performance and compliance with stringent regulatory standards.

Whether adjusting burner settings, calibrating equipment, or conducting thermal efficiency analyses, the ability to quickly reference and convert temperature values across different scales enhances the analytical capabilities of engineers. This leads to improved design, troubleshooting, and maintenance of high-stakes environments like power plants, manufacturing facilities, and chemical processing units. Incorporating these detailed and easily navigable tables not only supports the technical demands of the profession but also serves as a testament to our commitment to providing high-quality, actionable content that drives innovation and operational excellence in industrial combustion.