Skip to main content
0 results ↑ ↓ navigate, ↵ select

Btus (IT)/second/sq. foot to Metric Horsepowers/square foot Converter (Btu/(s·ft²) to hp (metric)/ft²)

Rate this converter 0 of 0 ratings
Instant calculation with 0ms overhead
Popular Converters
Live Conversion • ISO 80000-5:2019 Certified
1 BTU (IT)/second/sq. foot = 1.43447781 Metric horsepower/square foot
1 Btu/(s·ft²) = 1.434478 hp (metric)/ft² • 1 hp (metric)/ft² = 0.697118 Btu/(s·ft²)
BTU (IT)/second/sq. foot to Metric horsepower/square foot: One BTU (IT)/second/sq. foot is equal to 1.43447781 Metric Horsepowers/square foot.
Certified Authority Value
1.43447781
hp (metric)/ft²
Exact: 1 hp (metric)/ft² ≡ 0.6971177896 Btu/(s·ft²)
Btu/(s·ft²)
Btu/(s·ft²)
Swap to Metric horsepower/square foot to BTU (IT)/second/sq. foot
Swap to Metric horsepower/square foot to BTU (IT)/second/sq. foot
hp (metric)/ft²
hp (metric)/ft² 1.43447781
Quick Values:
Conversion Formula
To convert BTU (IT)/second/sq. foot to Metric horsepower/square foot, multiply by 1.43447781
Btu/(s·ft²) × 1.43447781 = hp (metric)/ft²

Calculation: 1 Btu/(s·ft²) × 1.43447781 = 1.43447781 hp (metric)/ft²

Common BTU (IT)/second/sq. foot to Metric horsepower/square foot Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between BTU (IT)/second/sq. foot (Btu/(s·ft²)) and Metric horsepower/square foot (hp (metric)/ft²).

Tap any row to calculate
BTU (IT)/second/sq. foot to Metric horsepower/square foot: Primary Direct Table (15 Steps)
BTU (IT)/second/sq. foot to Metric horsepower/square foot Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 Btu/(s·ft²) 0.00143448 hp (metric)/ft² 1.434 × 10⁻³
0.01 Btu/(s·ft²) 0.0143448 hp (metric)/ft² 1.434 × 10⁻²
0.1 Btu/(s·ft²) 0.143448 hp (metric)/ft² 1.434 × 10⁻¹
0.5 Btu/(s·ft²) 0.717239 hp (metric)/ft² 7.172 × 10⁻¹
1 Btu/(s·ft²) 1.434478 hp (metric)/ft² 1.434 × 10⁰
2 Btu/(s·ft²) 2.868956 hp (metric)/ft² 2.869 × 10⁰
5 Btu/(s·ft²) 7.172389 hp (metric)/ft² 7.172 × 10⁰
10 Btu/(s·ft²) 14.344778 hp (metric)/ft² 1.434 × 10¹
20 Btu/(s·ft²) 28.689556 hp (metric)/ft² 2.869 × 10¹
25 Btu/(s·ft²) 35.861945 hp (metric)/ft² 3.586 × 10¹
50 Btu/(s·ft²) 71.72389 hp (metric)/ft² 7.172 × 10¹
100 Btu/(s·ft²) 143.447781 hp (metric)/ft² 1.434 × 10²
250 Btu/(s·ft²) 358.619452 hp (metric)/ft² 3.586 × 10²
500 Btu/(s·ft²) 717.238905 hp (metric)/ft² 7.172 × 10²
1000 Btu/(s·ft²) 1434.47781 hp (metric)/ft² 1.434 × 10³
Metric horsepower/square foot to BTU (IT)/second/sq. foot: Reciprocal Summary
Metric horsepower/square foot to BTU (IT)/second/sq. foot Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 hp (metric)/ft² 0.697118 Btu/(s·ft²) 6.971 × 10⁻¹
5 hp (metric)/ft² 3.485589 Btu/(s·ft²) 3.486 × 10⁰
10 hp (metric)/ft² 6.971178 Btu/(s·ft²) 6.971 × 10⁰
50 hp (metric)/ft² 34.855889 Btu/(s·ft²) 3.486 × 10¹
100 hp (metric)/ft² 69.711779 Btu/(s·ft²) 6.971 × 10¹
View Complete 15-Row Metric horsepower/square foot to BTU (IT)/second/sq. foot Table

Real-World Context & Everyday Benchmarks

Tap to load into converter

To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for BTU (IT)/second/sq. foot (Btu/(s·ft²)) and Metric horsepower/square foot (hp (metric)/ft²):

BTU (IT)/second/sq. foot References:

  • Solar constant extraterrestrial solar irradiance at top of atmosphere 0.119843 Btu/(s·ft²)
  • Clear sky direct midday summer sunlight striking sea level ground 0.088055 Btu/(s·ft²)
  • Human body resting thermal metabolic heat radiation to room 0.004403 Btu/(s·ft²)
  • Overcast winter day diffuse solar irradiance at sea level 0.008806 Btu/(s·ft²)

Metric horsepower/square foot References:

  • Solar constant extraterrestrial solar irradiance at top of atmosphere 0.171912 hp (metric)/ft²
  • Clear sky direct midday summer sunlight striking sea level ground 0.126313 hp (metric)/ft²
  • Human body resting thermal metabolic heat radiation to room 0.006316 hp (metric)/ft²
  • Overcast winter day diffuse solar irradiance at sea level 0.012631 hp (metric)/ft²

Tap any benchmark above to automatically calculate its exact equivalent in Metric horsepower/square foot.

ISQ Dimension: [M T⁻³] Coherent SI Unit: watt per square meter (W/m²) Thermodynamics & Heat Transfer

How to Convert BTU (IT)/second/sq. foot to Metric horsepower/square foot

Converting BTU (IT)/second/sq. foot (Btu/(s·ft²)) to Metric horsepower/square foot (hp (metric)/ft²) is a core calculation in Heat Flux Density, which measures the rate of thermal energy transfer radiating or conducting through a unit area per second. This calculation navigates the boundary between the International Metric System (SI) and British Imperial / US Customary engineering standards. In contemporary metrology, Imperial units are defined in terms of exact SI standards via international agreements—notably NIST SP 811 and the 1959 International Yard and Pound Agreement. Exactly 1 BTU (IT)/second/sq. foot equals 1.434478 Metric horsepower/square foot, while 1 hp (metric)/ft² equals 0.697118 Btu/(s·ft²).

Direct Factor1 Btu/(s·ft²) = 1.434478 hp (metric)/ft²
Inverse Ratio1 hp (metric)/ft² = 0.697118 Btu/(s·ft²)
Conversion ScaleMetric SI to British Imperial / US Customary Bridge
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (watt per square meter (W/m²)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 Btu/(s·ft²) = 11356.527 watt per square meter (W/m²)
2. Target SI Bridge (ktarget):1 hp (metric)/ft² = 7916.837 watt per square meter (W/m²)
Step-by-step substitution for BTU (IT)/second/sq. foot → Metric horsepower/square foot:V(hp (metric)/ft²) = V(Btu/(s·ft²)) × ( 11356.527 / 7916.837 ) = V(Btu/(s·ft²)) × 1.434478
Mathematical FormulaValue in Metric horsepower/square foot = Value in BTU (IT)/second/sq. foot × 1.43447781Direct computational formula applied for standard conversion.
Worked Example

To convert 12 BTU (IT)/second/sq. foot (Btu/(s·ft²)) to Metric horsepower/square foot (hp (metric)/ft²): multiply 12 by 1.434478 to get 17.213734 hp (metric)/ft². At an industrial engineering scale, 1000 Btu/(s·ft²) converts to 1434.47781 hp (metric)/ft².

Inverse check: 1 hp (metric)/ft² = 0.697118 Btu/(s·ft²).

Understanding BTU (IT)/second/sq. foot and Metric horsepower/square foot

BTU (IT)/second/sq. foot

Btu/(s·ft²)
Imperial / US

A BTU (IT)/second/sq. foot (Btu/(s·ft²)) is an imperial and US customary unit for heat flux density.

Applications & Practical Context

In practical heat flux density terms, a solar constant extraterrestrial solar irradiance at top of atmosphere equals 0.119843 Btu/(s·ft²), a clear sky direct midday summer sunlight striking sea level ground equals 0.088055 Btu/(s·ft²), a human body resting thermal metabolic heat radiation to room equals 0.004403 Btu/(s·ft²).

Physical Setup

A physical magnitude of 1 Btu/(s·ft²) corresponds to 11356.527 W/m² in standard SI measurement.

Conversion to SI Unit: watt per square meter (W/m²)
1 Btu/(s·ft²) = 11356.527 W/m²

Metric horsepower/square foot

hp (metric)/ft²
Imperial / US

A Metric horsepower/square foot (hp (metric)/ft²) is an imperial and US customary unit for heat flux density.

Applications & Practical Context

In practical heat flux density terms, a solar constant extraterrestrial solar irradiance at top of atmosphere equals 0.171912 hp (metric)/ft², a clear sky direct midday summer sunlight striking sea level ground equals 0.126313 hp (metric)/ft², a human body resting thermal metabolic heat radiation to room equals 0.006316 hp (metric)/ft².

Physical Setup

A physical magnitude of 1 hp (metric)/ft² corresponds to 7916.837 W/m² in standard SI measurement.

Conversion to SI Unit: watt per square meter (W/m²)
1 hp (metric)/ft² = 7916.837 W/m²

Domain Metrology & Engineering Applications

Governing Law & Equation

Thermal Transmission Flux (q = Q̇ / A)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using Schmidt-Boelter heat flux gauges, differential thermopile foil transducers, and calibrated Gardon radiant gauges.

Primary Industry Sectors

Applied across rocket nozzle combustion chamber analysis, fire resistance testing (ASTM E119), furnace wall heat loss auditing, and hypersonic aerothermal design under international metrology standard ISO 80000-5:2019, ASME PTC 19.3.

Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the ISO 80000-5:2019, ASME PTC 19.3 and the BIPM SI Brochure (9th Edition). Governed by Thermal Transmission Flux (q = Q̇ / A) under ISO 80000 dimensional vector [M T⁻³].

Multi-Variable Engineering Bridge Thermal Radiation & Power Dissipation

Heat Flux Density to Total Thermal Power Bridge (Watts • Kilowatts • Megawatts • BTU/h • Horsepower)

Calculate total continuous heat dissipation power P = q" × A across surface barriers and exchangers, bridging heat flux density [M T⁻³] with thermal power [M L² T⁻³].

P = q" × A
Vector: [W/m²] × [m²] → [W]
Live Calculated Bridge Equivalent:
1 Btu/(s·ft²) at Industrial Hydronic Radiator Panel (8 m²) = 90852.216 W
Equals 90.8522 kW • 0.0908522 MW • 121.8348 hp
SI Power
90852.216
W
Watts
Grid / Utility
90.8522
kW
Kilowatts
Power Plant
0.0908522
MW
Megawatts
Mechanical Rating
121.8348
hp
Horsepower (Mechanical)
Metric Horsepower
123.5246
PS
Metric Horsepower (PS)
HVAC Thermal Rating
310000.63
BTU/h
BTU per Hour
  1. 1. Normalize Input to SI Base Unit (W/m²):
    q" = 1 Btu/(s·ft²) × 11356.527 = 11356.527 W/m²
  2. 2. Apply Engineering Parameter (A):
    Selected condition: Industrial Hydronic Radiator Panel (8 m²) at A = 8 m²
  3. 3. Execute Governing Physical Law in SI Units:
    P = q" × A = (11356.527 W/m²) × (8 m²) = 90852.216 W
  4. 4. Convert to Standard Engineering Units:
    • W: 90852.216 × 1 = 90852.216 W (Watts) • kW: 90852.216 × 0.001 = 90.8522 kW (Kilowatts) • MW: 90852.216 × 1 × 10⁻⁶ = 0.0908522 MW (Megawatts) • hp: 90852.216 × 0.001341 = 121.8348 hp (Horsepower (Mechanical)) • PS: 90852.216 × 0.00136 = 123.5246 PS (Metric Horsepower (PS)) • BTU/h: 90852.216 × 3.4121 = 310000.63 BTU/h (BTU per Hour)
Explore Full Power Converter →
Engineering Substance / Operating Standard Parameter Value (m²) Reference State / Condition Typical Industrial & Engineering Application
Residential Window Glazing (4 m²) 4 4.0 m² Double-pane exterior window glass aperture
Industrial Hydronic Radiator Panel (8 m²) 8 8.0 m² Convective space heating radiator surface
Shell & Tube Heat Exchanger (50 m²) 50 50.0 m² Industrial process fluid cooling bundle
Power Boiler Waterwall (200 m²) 200 200.0 m² Thermal power plant steam generator wall
Embed
Need this BTU (IT)/second/sq. foot to Metric horsepower/square foot calculator on your website, lab portal, or research blog?
Free HTML Widget 100% Responsive Zero Cookie Tracking
Notice a calculation discrepancy, rounding error, or glitch?
Help us maintain 100% scientific precision and report any issues directly to engineering.

Frequently Asked Questions

There are exactly 1.43447781 metric horsepowers/square foot (hp (metric)/ft²) in 1 btu (it)/second/sq. foot (Btu/(s·ft²)). To calculate larger amounts manually, simply multiply your total number of btus (it)/second/sq. foot by the conversion multiplier of 1.43447781.

The mathematical formula to convert btus (it)/second/sq. foot to metric horsepowers/square foot is: [value] * 1.43447781 = metric horsepowers/square foot. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from metric horsepowers/square foot back to btus (it)/second/sq. foot, you must divide your starting value by 1.43447781. Our bidirectional tool automatically computes this inverse equation the moment you type into the metric horsepower/square foot input field.

1 BTU (IT)/second/sq. foot is larger than 1 Metric horsepower/square foot. Specifically, 1 BTU (IT)/second/sq. foot equals exactly 1.43447781 metric horsepowers/square foot, making it 1.4345 times larger (a difference of 0.16 orders of magnitude). Therefore, quantities expressed in metric horsepowers/square foot require a larger numerical value to represent the same physical amount.

Under standard international measurement guidelines, 1 BTU (IT)/second/sq. foot converts to 1.43447781 metric horsepowers/square foot. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.