Which thermal conductivity units are supported?

The tool supports W/(m·K), kcal/(m·h·°C), and BTU/(hr·ft·°F).

What input values are accepted?

The value must be a non-negative number.

What conversion factors are used?

1 kcal/(m·h·°C) equals 1.1627778 W/(m·K), and 1 BTU/(hr·ft·°F) equals 1.7307347 W/(m·K).

Can I choose the displayed precision?

Yes. Set decimal places from 0 to 10; the default is 6.

Does the result include other unit equivalents?

Yes. The JSON result includes the selected output and equivalent values in all three supported units.

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Thermal Conductivity Converter (W/(m·K) / kcal / BTU)

Convert thermal conductivity between W/(m·K) (watt per metre-kelvin, SI base, = W/(m·°C)), kcal/(m·h·°C) (1 = 1.1627778 W/(m·K)), and BTU/(hr·ft·°F) (1 = 1.7307347 W/(m·K)). Converts via W/(m·K) to the target unit and also lists the equivalent value in all three units for reference. Reference values: copper ≈ 401, aluminum ≈ 237, steel ≈ 50, water ≈ 0.6, air ≈ 0.026, insulation foam ≈ 0.03 W/(m·K).

Execution

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2 examples

Copper: 401 W/(m·K) → kcal ≈ 344.864, BTU ≈ 231.694

401 W/(m·K) ÷ 1.1627777778 = 344.864 kcal/(m·h·°C). ÷ 1.730734666 = 231.694 BTU/(hr·ft·°F). Excellent conductor — heat-sink material.

{"result":"401 W/(m·K) = 344.863832 kcal/(m·h·°C). All units: W/(m·K)=401, kcal/(m·h·°C)=344.863832, BTU/(hr·ft·°F)=231.693516.","metadata":{"input":{"inputUnit":"W/(m·K)","value":401,"outputUnit":"kcal/(m·h·°C)"},"result":{"outputValue":344.863832,"outputUnit":"kcal/(m·h·°C)","WmK":401,"kcal":344.863832,"BTU":231.693516}}}

Insulation: 0.03 W/(m·K) → kcal ≈ 0.0258, BTU ≈ 0.017334

0.03 W/(m·K) ÷ 1.1627777778 = 0.0258 kcal/(m·h·°C). ÷ 1.730734666 = 0.017334 BTU/(hr·ft·°F). Mineral wool / EPS foam territory.

{"result":"0.03 W/(m·K) = 0.017334 BTU/(hr·ft·°F). All units: W/(m·K)=0.03, kcal/(m·h·°C)=0.025800, BTU/(hr·ft·°F)=0.017334.","metadata":{"input":{"inputUnit":"W/(m·K)","value":0.03,"outputUnit":"BTU/(hr·ft·°F)"},"result":{"outputValue":0.017334,"outputUnit":"BTU/(hr·ft·°F)","WmK":0.03,"kcal":0.0258,"BTU":0.017334}}}

Inputs

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4 options

SettingsAdjust formats, ranges, numbers, and modes.4

Input unitselectOptionalValuenumberRequiredThermal conductivity in the selected Input unit. Must be non-negative.Output unitselectOptionalDecimal PlacesnumberOptional

Result

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Samples

Thermal Conductivity Converter (W/(m·K) / kcal / BTU)

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Key facts

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Use cases

Examples

1. Convert copper conductivity to engineering units

2. Convert insulation conductivity to BTU units

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