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🔄 Engineering Unit Converter

Convert between hundreds of engineering units across temperature, pressure, energy, power, mass, length, and more.

⚡ Fortran 90 Engine Double Precision (IEEE 754) ✓ ISO / ASME Validated
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📦 Code Fortran 11 KB
📅 Mise en service Jan 2024
⏱️ Latence < 1 ms

🌡️ Temperature

🔴 Pressure

📏 Length

⚖️ Mass

⚡ Energy

🔋 Power

💧 Volume Flow Rate

🫗 Dynamic Viscosity

📘 Calculation Methodology: Engineering Dimensional Analysis & Unit Conversion

Mathematical Model & Theory

Performs exact dimensional transformations across SI metric, Imperial, and US Customary systems for pressure, flow rate, energy, power, viscosity, and thermal conductance:

$$1\text{ bar} = 100\text{ kPa} = 14.5038\text{ psi} = 750.06\text{ mmHg}, \quad 1\text{ kW} = 1.34102\text{ hp} = 3412.14\text{ BTU/h} = 0.28434\text{ TR}$$
$$1\text{ cP} = 10^{-3}\text{ Pa}\cdot\text{s} = 2.4191\text{ lb/(ft}\cdot\text{h)}, \quad 1\text{ m}^3/\text{h} = 4.40287\text{ GPM} = 0.27778\text{ L/s}$$

Assumptions

  • Exact conversion factors defined by NIST Special Publication 811 and ISO 80000.
  • Temperature interval conversions: $1 ext{ K} = 1^\circ ext{C} = 1.8^\circ ext{F} = 1.8^\circ ext{R}$.

Academic References

  1. NIST SP 811: Guide for the Use of the International System of Units (SI).
  2. ISO 80000-1: Quantities and units — General.

Worked Engineering Example

Problem Statement:
Convert a refrigeration duty of $120\text{ kW}$ into Tons of Refrigeration (TR) and BTU/h.

Step-by-step Solution:
1. Tons of Refrigeration ($1\text{ TR} = 3.51685\text{ kW}$):
$$\text{TR} = 120 / 3.51685 \approx 34.12\text{ TR}$$
2. BTU per hour ($1\text{ kW} = 3412.142\text{ BTU/h}$):
$$\text{BTU/h} = 120 \times 3412.142 = 409,457\text{ BTU/h}$$
Final Result:
$120\text{ kW} = \mathbf{34.12\text{ Tons of Refrigeration}} = \mathbf{409,457\text{ BTU/h}}$.