Btu (mean) to Calories (15 °C, NBS 1939) conversion

Calories (15 °C, NBS 1939) to Btu (mean) (Swap Units)

Format
Decimal Fractions

Accuracy
Select resolution
1 significant figure
2 significant figures
3 significant figures
4 significant figures
5 significant figures
6 significant figures
7 significant figures
8 significant figures

Note: Fractional results are rounded to the nearest 1/64. For a more accurate answer please select 'decimal' from the options above the result.

Note: You can increase or decrease the accuracy of this answer by selecting the number of significant figures required from the options above the result.

Note: For a pure decimal result please select 'decimal' from the options above the result.

One BTU is the energy required to heat 1 avoirdupois pound of liquid water by 1 degree Fahrenheit, at a pressure of one atmosphere. The Btu (mean) uses a result averaged over water temperatures 0 to 100 Â°C (32.0 to 212.0 Â°F) which is approx. 1055.87 J

Btu (mean) to Calories (15 °C, NBS 1939) formula

cal(NBS) =

Btu (mean) * 252.25

The National Bureau of Standards (NBS, now known as The National Institute of Standards and Technology) defined the cal15 as being the ammount of energy needed to warm 1g of water from 14.5°C to 15.5°C

Btu (mean) to Calories (15 °C, NBS 1939) table
Start

Increments
Increment: 1000
Increment: 100
Increment: 20
Increment: 10
Increment: 5
Increment: 2
Increment: 1
Increment: 0.1
Increment: 0.01
Increment: 0.001
Fractional: 1/64
Fractional: 1/32
Fractional: 1/16
Fractional: 1/8
Fractional: 1/4
Fractional: 1/2

Accuracy
Select resolution
1 significant figure
2 significant figures
3 significant figures
4 significant figures
5 significant figures
6 significant figures
7 significant figures
8 significant figures

Format
Decimal Fractions

Print table

< Smaller Values
Larger Values >

Btu (mean)
Calories (15 °C, NBS 1939)
0 Btu (mean)
0.00 cal(NBS)
1 Btu (mean)
252.25 cal(NBS)
2 Btu (mean)
504.50 cal(NBS)
3 Btu (mean)
756.75 cal(NBS)
4 Btu (mean)
1009.00 cal(NBS)
5 Btu (mean)
1261.25 cal(NBS)
6 Btu (mean)
1513.50 cal(NBS)
7 Btu (mean)
1765.75 cal(NBS)
8 Btu (mean)
2018.00 cal(NBS)
9 Btu (mean)
2270.25 cal(NBS)
10 Btu (mean)
2522.50 cal(NBS)
11 Btu (mean)
2774.76 cal(NBS)
12 Btu (mean)
3027.01 cal(NBS)
13 Btu (mean)
3279.26 cal(NBS)
14 Btu (mean)
3531.51 cal(NBS)
15 Btu (mean)
3783.76 cal(NBS)
16 Btu (mean)
4036.01 cal(NBS)
17 Btu (mean)
4288.26 cal(NBS)
18 Btu (mean)
4540.51 cal(NBS)
19 Btu (mean)
4792.76 cal(NBS)

Btu (mean)
Calories (15 °C, NBS 1939)
20 Btu (mean)
5045.01 cal(NBS)
21 Btu (mean)
5297.26 cal(NBS)
22 Btu (mean)
5549.51 cal(NBS)
23 Btu (mean)
5801.76 cal(NBS)
24 Btu (mean)
6054.01 cal(NBS)
25 Btu (mean)
6306.26 cal(NBS)
26 Btu (mean)
6558.51 cal(NBS)
27 Btu (mean)
6810.76 cal(NBS)
28 Btu (mean)
7063.01 cal(NBS)
29 Btu (mean)
7315.26 cal(NBS)
30 Btu (mean)
7567.51 cal(NBS)
31 Btu (mean)
7819.76 cal(NBS)
32 Btu (mean)
8072.01 cal(NBS)
33 Btu (mean)
8324.27 cal(NBS)
34 Btu (mean)
8576.52 cal(NBS)
35 Btu (mean)
8828.77 cal(NBS)
36 Btu (mean)
9081.02 cal(NBS)
37 Btu (mean)
9333.27 cal(NBS)
38 Btu (mean)
9585.52 cal(NBS)
39 Btu (mean)
9837.77 cal(NBS)

Btu (mean)
Calories (15 °C, NBS 1939)
40 Btu (mean)
10090.02 cal(NBS)
41 Btu (mean)
10342.27 cal(NBS)
42 Btu (mean)
10594.52 cal(NBS)
43 Btu (mean)
10846.77 cal(NBS)
44 Btu (mean)
11099.02 cal(NBS)
45 Btu (mean)
11351.27 cal(NBS)
46 Btu (mean)
11603.52 cal(NBS)
47 Btu (mean)
11855.77 cal(NBS)
48 Btu (mean)
12108.02 cal(NBS)
49 Btu (mean)
12360.27 cal(NBS)
50 Btu (mean)
12612.52 cal(NBS)
51 Btu (mean)
12864.77 cal(NBS)
52 Btu (mean)
13117.02 cal(NBS)
53 Btu (mean)
13369.27 cal(NBS)
54 Btu (mean)
13621.53 cal(NBS)
55 Btu (mean)
13873.78 cal(NBS)
56 Btu (mean)
14126.03 cal(NBS)
57 Btu (mean)
14378.28 cal(NBS)
58 Btu (mean)
14630.53 cal(NBS)
59 Btu (mean)
14882.78 cal(NBS)