Convert Calories per Second-Square Centimeter to BTU per Hour-Square Foot
Instantly convert Calories per Second-Square Centimeter (cal/(s·cm²)) to BTU per Hour-Square Foot (BTU/(hr·ft²)) with our free online calculator.
Formula: cal/(s·cm²) to BTU/(hr·ft²) — multiply by 13263.2
Reference Table
| Calories per Second-Square Centimeter (cal/(s·cm²)) | BTU per Hour-Square Foot (BTU/(hr·ft²)) |
|---|---|
| 1 | 13263.2 |
| 5 | 66316.1 |
| 10 | 132632 |
| 25 | 331580 |
| 50 | 663161 |
| 100 | 1326320 |
How to Convert Calories per Second-Square Centimeter to BTU per Hour-Square Foot
Formula
To convert Calories per Second-Square Centimeter (cal/(s·cm²)) to BTU per Hour-Square Foot (BTU/(hr·ft²)): multiply by 13263.2
Step-by-Step
- Start with your value in Calories per Second-Square Centimeter (cal/(s·cm²)).
- Multiply by 13263.2 to perform the conversion.
- The result is your value expressed in BTU per Hour-Square Foot (BTU/(hr·ft²)).
Conversion Factor
1 cal/(s·cm²) = 13263.2 BTU/(hr·ft²)
Reverse Factor
1 BTU/(hr·ft²) = 0.0000753965 cal/(s·cm²)
Worked Example
Convert 25 Calories per Second-Square Centimeter to BTU per Hour-Square Foot: 25 cal/(s·cm²) = 331580 BTU/(hr·ft²)
About Calorie per Second-Square Centimeter (cal/(s·cm²))
A CGS heat-flux unit equal to exactly 41,840 W/m² = 41.84 kW/m². Traditionally used in atmospheric physics, geophysics, and solar-radiation research, where the closely-related unit 'langley per minute' (1 langley = 1 cal/cm², so 1 ly/min = 1 cal/(min·cm²) = 696.7 W/m²) appears in historical solar-radiation observations published by US Weather Bureau, NOAA Surface Radiation Budget Network (SURFRAD), and the Smithsonian Astrophysical Observatory's pre-satellite solar-constant measurements. Used heavily in pre-1990s solar-energy literature, atmospheric-science textbooks (Iqbal 'An Introduction to Solar Radiation'), and geophysical heat-flow measurements at hydrothermal-vent fields. Reference values: peak summer-noon insolation in cal/(s·cm²) ≈ 0.024 (= ~1,000 W/m²); average global insolation ~0.006 cal/(s·cm²). Today mostly superseded by W/m² in publications and instrumentation, retained only for historical-record continuity.
About BTU per Hour-Square Foot (BTU/(hr·ft²))
An imperial heat-flux unit (≈ 3.1546 W/m² per NIST SP 811) used universally in US HVAC engineering, building-envelope thermal analysis, and shell-and-tube heat-exchanger design per TEMA standards. ASHRAE design cooling loads (per ASHRAE 90.1 / 62.1), solar heat-gain coefficient (SHGC) tables for fenestration per NFRC 100/200, and US HVAC equipment-output ratings all use BTU/(hr·ft²). Reference values from ASHRAE Handbook: peak summer solar heat gain through a south-facing window in Phoenix ~200-300 BTU/(hr·ft²) at solar noon; design cooling load for a US suburban home 30-50 BTU/(hr·ft²) of conditioned floor area; commercial-building design heating load 20-30 BTU/(hr·ft²) (mixed-humid climate per ASHRAE 90.1). US shell-and-tube heat-exchanger thermal-design specifications per TEMA Standards routinely quote heat-flux design points in BTU/(hr·ft²) — typical ranges 50-500 BTU/(hr·ft²) for liquid-to-liquid service; 1,000-10,000 BTU/(hr·ft²) for boilers and condensers; up to 100,000 BTU/(hr·ft²) for once-through-steam-generator superheater sections.
Quick Facts
- 1 Calorie per Second-Square Centimeter equals 13263.2 BTU per Hour-Square Foot
- 1 BTU per Hour-Square Foot equals 0.0000753965 Calories per Second-Square Centimeter
- Calorie per Second-Square Centimeter is a unit of heat flux
- BTU per Hour-Square Foot is a unit of heat flux
- This conversion is commonly used in fire protection engineering, electronics cooling, and solar energy
- The Calorie per Second-Square Centimeter belongs to the metric system
- The BTU per Hour-Square Foot belongs to the imperial system
Common Calorie per Second-Square Centimeter to BTU per Hour-Square Foot Conversions
| Calories per Second-Square Centimeter (cal/(s·cm²)) | BTU per Hour-Square Foot (BTU/(hr·ft²)) |
|---|---|
| 0.01 | 132.632 |
| 0.1 | 1326.32 |
| 0.25 | 3315.8 |
| 0.5 | 6631.61 |
| 1 | 13263.2 |
| 2 | 26526.4 |
| 3 | 39789.6 |
| 5 | 66316.1 |
| 10 | 132632 |
| 15 | 198948 |
| 20 | 265264 |
| 25 | 331580 |
| 50 | 663161 |
| 75 | 994741 |
| 100 | 1326320 |
| 250 | 3315800 |
| 500 | 6631610 |
| 1000 | 13263200 |
| 5000 | 66316100 |
| 10000 | 132632000 |
Understanding Calories per Second-Square Centimeter
The Calorie per Second-Square Centimeter (symbol: cal/(s·cm²)) is a unit of heat flux. A CGS heat-flux unit equal to exactly 41,840 W/m² = 41.84 kW/m². Traditionally used in atmospheric physics, geophysics, and solar-radiation research, where the closely-related unit 'langley per minute' (1 langley = 1 cal/cm², so 1 ly/min = 1 cal/(min·cm²) = 696.7 W/m²) appears in historical solar-radiation observations published by US Weather Bureau, NOAA Surface Radiation Budget Network (SURFRAD), and the Smithsonian Astrophysical Observatory's pre-satellite solar-constant measurements. Used heavily in pre-1990s solar-energy literature, atmospheric-science textbooks (Iqbal 'An Introduction to Solar Radiation'), and geophysical heat-flow measurements at hydrothermal-vent fields. Reference values: peak summer-noon insolation in cal/(s·cm²) ≈ 0.024 (= ~1,000 W/m²); average global insolation ~0.006 cal/(s·cm²). Today mostly superseded by W/m² in publications and instrumentation, retained only for historical-record continuity.
It belongs to the metric measurement system.
Calories per Second-Square Centimeter are commonly used in fire protection engineering, electronics cooling, and solar energy.
Understanding BTU per Hour-Square Foot
The BTU per Hour-Square Foot (symbol: BTU/(hr·ft²)) is a unit of heat flux. An imperial heat-flux unit (≈ 3.1546 W/m² per NIST SP 811) used universally in US HVAC engineering, building-envelope thermal analysis, and shell-and-tube heat-exchanger design per TEMA standards. ASHRAE design cooling loads (per ASHRAE 90.1 / 62.1), solar heat-gain coefficient (SHGC) tables for fenestration per NFRC 100/200, and US HVAC equipment-output ratings all use BTU/(hr·ft²). Reference values from ASHRAE Handbook: peak summer solar heat gain through a south-facing window in Phoenix ~200-300 BTU/(hr·ft²) at solar noon; design cooling load for a US suburban home 30-50 BTU/(hr·ft²) of conditioned floor area; commercial-building design heating load 20-30 BTU/(hr·ft²) (mixed-humid climate per ASHRAE 90.1). US shell-and-tube heat-exchanger thermal-design specifications per TEMA Standards routinely quote heat-flux design points in BTU/(hr·ft²) — typical ranges 50-500 BTU/(hr·ft²) for liquid-to-liquid service; 1,000-10,000 BTU/(hr·ft²) for boilers and condensers; up to 100,000 BTU/(hr·ft²) for once-through-steam-generator superheater sections.
It belongs to the imperial measurement system.
BTU per Hour-Square Foot are commonly used in fire protection engineering, electronics cooling, and solar energy.
Why Convert Calories per Second-Square Centimeter to BTU per Hour-Square Foot?
Converting between Calories per Second-Square Centimeter and BTU per Hour-Square Foot is a frequent requirement for engineers, scientists, and students working with heat flux values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate heat flux conversion is essential.
Frequently Asked Questions
How do I convert Calories per Second-Square Centimeter to BTU per Hour-Square Foot?
A CGS heat-flux unit equal to exactly 41,840 W/m² = 41. To convert Calories per Second-Square Centimeter to BTU per Hour-Square Foot, multiply by 13263.2. For example, 25 cal/(s·cm²) equals 331580 BTU/(hr·ft²).
How many BTU per Hour-Square Foot are in 1 Calorie per Second-Square Centimeter?
There are 13263.2 BTU per Hour-Square Foot in 1 Calorie per Second-Square Centimeter.
How many Calories per Second-Square Centimeter are in 1 BTU per Hour-Square Foot?
There are 0.0000753965 Calories per Second-Square Centimeter in 1 BTU per Hour-Square Foot.
What is the formula for Calorie per Second-Square Centimeter to BTU per Hour-Square Foot conversion?
The formula is: multiply by 13263.2. This means 1 cal/(s·cm²) = 13263.2 BTU/(hr·ft²).
Is a Calorie per Second-Square Centimeter bigger than a BTU per Hour-Square Foot?
No. One Calorie per Second-Square Centimeter is smaller than one BTU per Hour-Square Foot because 1 cal/(s·cm²) equals 13263.2 BTU/(hr·ft²), which is greater than 1.
When do you need to convert between Calories per Second-Square Centimeter and BTU per Hour-Square Foot?
An imperial heat-flux unit (≈ 3. Calorie per Second-Square Centimeter and BTU per Hour-Square Foot are both heat flux units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.