# Btu (15.8°C, ISO) to Btu (I.T., pre-1956)

Btu (I.T., pre-1956) to Btu (15.8°C, ISO) (Swap Units)

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## Btu (15.8°C, ISO) to Btu (I.T., pre-1956) formula

Btu (I.T., pre-1956) =
Btu (15.8°C, ISO) * 0.99949

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## Btu (15.8°C, ISO)

One BTU is defined as the energy required at 1 atmosphere to heat 1 avoirdupois pound of liquid water by 1 degree Fahrenheit. One Btu (15.8°C, ISO) equates to 1,054.5 J

## Btu (15.8°C, ISO) to Btu (I.T., pre-1956) formula

Btu (I.T., pre-1956) =
Btu (15.8°C, ISO) * 0.99949

## Btu (I.T., pre-1956)

One Btu (I.T., pre-1956) equates to 1055.04 J

## Btu (15.8°C, ISO) to Btu (I.T., pre-1956) table

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< Smaller Values Larger Values >
Btu (15.8°C, ISO) Btu (I.T., pre-1956)
0Btu (15.8°C, ISO) 0.00Btu (I.T., pre-1956)
1Btu (15.8°C, ISO) 1.00Btu (I.T., pre-1956)
2Btu (15.8°C, ISO) 2.00Btu (I.T., pre-1956)
3Btu (15.8°C, ISO) 3.00Btu (I.T., pre-1956)
4Btu (15.8°C, ISO) 4.00Btu (I.T., pre-1956)
5Btu (15.8°C, ISO) 5.00Btu (I.T., pre-1956)
6Btu (15.8°C, ISO) 6.00Btu (I.T., pre-1956)
7Btu (15.8°C, ISO) 7.00Btu (I.T., pre-1956)
8Btu (15.8°C, ISO) 8.00Btu (I.T., pre-1956)
9Btu (15.8°C, ISO) 9.00Btu (I.T., pre-1956)
10Btu (15.8°C, ISO) 9.99Btu (I.T., pre-1956)
11Btu (15.8°C, ISO) 10.99Btu (I.T., pre-1956)
12Btu (15.8°C, ISO) 11.99Btu (I.T., pre-1956)
13Btu (15.8°C, ISO) 12.99Btu (I.T., pre-1956)
14Btu (15.8°C, ISO) 13.99Btu (I.T., pre-1956)
15Btu (15.8°C, ISO) 14.99Btu (I.T., pre-1956)
16Btu (15.8°C, ISO) 15.99Btu (I.T., pre-1956)
17Btu (15.8°C, ISO) 16.99Btu (I.T., pre-1956)
18Btu (15.8°C, ISO) 17.99Btu (I.T., pre-1956)
19Btu (15.8°C, ISO) 18.99Btu (I.T., pre-1956)
Btu (15.8°C, ISO) Btu (I.T., pre-1956)
20Btu (15.8°C, ISO) 19.99Btu (I.T., pre-1956)
21Btu (15.8°C, ISO) 20.99Btu (I.T., pre-1956)
22Btu (15.8°C, ISO) 21.99Btu (I.T., pre-1956)
23Btu (15.8°C, ISO) 22.99Btu (I.T., pre-1956)
24Btu (15.8°C, ISO) 23.99Btu (I.T., pre-1956)
25Btu (15.8°C, ISO) 24.99Btu (I.T., pre-1956)
26Btu (15.8°C, ISO) 25.99Btu (I.T., pre-1956)
27Btu (15.8°C, ISO) 26.99Btu (I.T., pre-1956)
28Btu (15.8°C, ISO) 27.99Btu (I.T., pre-1956)
29Btu (15.8°C, ISO) 28.99Btu (I.T., pre-1956)
30Btu (15.8°C, ISO) 29.98Btu (I.T., pre-1956)
31Btu (15.8°C, ISO) 30.98Btu (I.T., pre-1956)
32Btu (15.8°C, ISO) 31.98Btu (I.T., pre-1956)
33Btu (15.8°C, ISO) 32.98Btu (I.T., pre-1956)
34Btu (15.8°C, ISO) 33.98Btu (I.T., pre-1956)
35Btu (15.8°C, ISO) 34.98Btu (I.T., pre-1956)
36Btu (15.8°C, ISO) 35.98Btu (I.T., pre-1956)
37Btu (15.8°C, ISO) 36.98Btu (I.T., pre-1956)
38Btu (15.8°C, ISO) 37.98Btu (I.T., pre-1956)
39Btu (15.8°C, ISO) 38.98Btu (I.T., pre-1956)
Btu (15.8°C, ISO) Btu (I.T., pre-1956)
40Btu (15.8°C, ISO) 39.98Btu (I.T., pre-1956)
41Btu (15.8°C, ISO) 40.98Btu (I.T., pre-1956)
42Btu (15.8°C, ISO) 41.98Btu (I.T., pre-1956)
43Btu (15.8°C, ISO) 42.98Btu (I.T., pre-1956)
44Btu (15.8°C, ISO) 43.98Btu (I.T., pre-1956)
45Btu (15.8°C, ISO) 44.98Btu (I.T., pre-1956)
46Btu (15.8°C, ISO) 45.98Btu (I.T., pre-1956)
47Btu (15.8°C, ISO) 46.98Btu (I.T., pre-1956)
48Btu (15.8°C, ISO) 47.98Btu (I.T., pre-1956)
49Btu (15.8°C, ISO) 48.97Btu (I.T., pre-1956)
50Btu (15.8°C, ISO) 49.97Btu (I.T., pre-1956)
51Btu (15.8°C, ISO) 50.97Btu (I.T., pre-1956)
52Btu (15.8°C, ISO) 51.97Btu (I.T., pre-1956)
53Btu (15.8°C, ISO) 52.97Btu (I.T., pre-1956)
54Btu (15.8°C, ISO) 53.97Btu (I.T., pre-1956)
55Btu (15.8°C, ISO) 54.97Btu (I.T., pre-1956)
56Btu (15.8°C, ISO) 55.97Btu (I.T., pre-1956)
57Btu (15.8°C, ISO) 56.97Btu (I.T., pre-1956)
58Btu (15.8°C, ISO) 57.97Btu (I.T., pre-1956)
59Btu (15.8°C, ISO) 58.97Btu (I.T., pre-1956)