Calories to BTU per Hour (cal → BTU/h)
Formula
1 cal = 14.276404011314664 BTU/hConversion Table
| cal | BTU/h |
|---|---|
| 0 | 0 |
| 1.0000 | 14.276 |
| 2.0000 | 28.553 |
| 3.0000 | 42.829 |
| 4.0000 | 57.106 |
| 5.0000 | 71.382 |
| 6.0000 | 85.658 |
| 7.0000 | 99.935 |
| 8.0000 | 114.21 |
| 9.0000 | 128.49 |
| 10.000 | 142.76 |
| 11.000 | 157.04 |
| 12.000 | 171.32 |
| 13.000 | 185.59 |
| 14.000 | 199.87 |
| 15.000 | 214.15 |
| 16.000 | 228.42 |
| 17.000 | 242.70 |
| 18.000 | 256.98 |
| 19.000 | 271.25 |
| cal | BTU/h |
|---|---|
| 20.000 | 285.53 |
| 21.000 | 299.80 |
| 22.000 | 314.08 |
| 23.000 | 328.36 |
| 24.000 | 342.63 |
| 25.000 | 356.91 |
| 26.000 | 371.19 |
| 27.000 | 385.46 |
| 28.000 | 399.74 |
| 29.000 | 414.02 |
| 30.000 | 428.29 |
| 31.000 | 442.57 |
| 32.000 | 456.84 |
| 33.000 | 471.12 |
| 34.000 | 485.40 |
| 35.000 | 499.67 |
| 36.000 | 513.95 |
| 37.000 | 528.23 |
| 38.000 | 542.50 |
| 39.000 | 556.78 |
| cal | BTU/h |
|---|---|
| 40.000 | 571.06 |
| 41.000 | 585.33 |
| 42.000 | 599.61 |
| 43.000 | 613.89 |
| 44.000 | 628.16 |
| 45.000 | 642.44 |
| 46.000 | 656.71 |
| 47.000 | 670.99 |
| 48.000 | 685.27 |
| 49.000 | 699.54 |
| 50.000 | 713.82 |
| 51.000 | 728.10 |
| 52.000 | 742.37 |
| 53.000 | 756.65 |
| 54.000 | 770.93 |
| 55.000 | 785.20 |
| 56.000 | 799.48 |
| 57.000 | 813.76 |
| 58.000 | 828.03 |
| 59.000 | 842.31 |
| cal | BTU/h |
|---|---|
| 60.000 | 856.58 |
| 61.000 | 870.86 |
| 62.000 | 885.14 |
| 63.000 | 899.41 |
| 64.000 | 913.69 |
| 65.000 | 927.97 |
| 66.000 | 942.24 |
| 67.000 | 956.52 |
| 68.000 | 970.80 |
| 69.000 | 985.07 |
| 70.000 | 999.35 |
| 71.000 | 1,013.6 |
| 72.000 | 1,027.9 |
| 73.000 | 1,042.2 |
| 74.000 | 1,056.5 |
| 75.000 | 1,070.7 |
| 76.000 | 1,085.0 |
| 77.000 | 1,099.3 |
| 78.000 | 1,113.6 |
| 79.000 | 1,127.8 |
Calories to BTU per Hour Conversion
Converting Calories (cal) to BTU per Hour (BTU/h) is a common energy and power conversion. 1 cal equals 14.276404 BTU/h. For example, 100 cal is equal to 1,427.640401 BTU/h.
Quick Mental Math: Calories to BTU per Hour
If 5 calories is spread over 1 hour, it is about 0.01983 btu per hour.
Why is converting Calories to BTU per Hour tricky?
calories to btu per hour mixes energy with power, so the missing time step is the trap: the same energy gives different power over 1 second and 1 hour.
Quick Reference Values
1 cal = 14.276404 BTU/h. 5 cal = 71.38202 BTU/h. 10 cal = 142.76404 BTU/h. 25 cal = 356.9101 BTU/h. 50 cal = 713.820201 BTU/h. 100 cal = 1,427.640401 BTU/h.
What is Calories?
Calories (cal) is a unit of energy and power. The calorie (cal) is defined as exactly 4.184 joules. It quantifies the energy needed to raise the temperature of one gram of water by 1°C under standard conditions. The calorie is widely used in chemistry and nutrition to express energy content [bipm-si-brochure]. The calorie was introduced in the early 19th century by Nicolas Clément and standardized internationally in the 20th century. It was adopted for practical energy measurement in chemistry and food science before the joule became the SI unit [bipm-si-brochure]. Calories remain common in food labeling, nutrition, and chemistry worldwide. The dietary Calorie (kcal) is prevalent in the US, Europe, and many countries while scientific contexts prefer the joule [bipm-si-brochure].
What is BTU per Hour?
BTU per Hour (BTU/h) is a unit of energy and power. BTU per hour (BTU/h) quantifies power as the rate of energy transfer equal to one British Thermal Unit delivered in one hour. It converts to approximately 0.293071 watts. This unit is commonly used to rate heating and cooling system capacities and thermal power consumption [nist-sp-811]. The concept of BTU per hour stemmed from the BTU to express continuous heat flow rates in heating and ventilation during the 19th century. It was formalized to measure energy transfer rates in thermal engineering applications [nist-sp-811]. BTU/h is standard in HVAC industry specifications in the US, Canada, and the UK. It is used to indicate the heating or cooling capacity of furnaces, air conditioners, and boilers where SI units are uncommon or supplemented [nist-sp-811].
Common Misspellings
People often search for this conversion using these alternate spellings: calorie, cal, calory, calo, btu per hr, btu/hour, btu per hours, btu per h, btu per hr. All of these refer to the Calories to BTU per Hour conversion.