โœฆ 100% Free โ€” No Signup โ€” No Limits

Professional
Engineering Calculators
You Can Trust

Fortran-powered tools for heat transfer, fluid mechanics, and thermodynamics. Built for students, engineers, and researchers โ€” completely free, forever.

๐Ÿ”“ No Signup
โšก Fortran-Powered
โœ… Validated Accuracy
๐Ÿ“Š 51 Calculators

Try a Live Calculation

Change the sliders below to see thermal resistance, heat transfer rates, and temperature gradients compute in real-time.

1. Input Parameters

Higher values conduct heat faster (metals/concrete vs insulation).
Thicker walls increase resistance and reduce heat loss.

2. Computed Thermal Results

Thermal Resistance 0.075 K/W
Heat Flux (q) 320 W/mยฒ
Total Heat Loss (Q) 800 Watts
T1 = 80ยฐC T2 = 20ยฐC Q L = 0.15m

Explore Our Engineering Tools

Comprehensive calculators covering the core disciplines of thermal and fluid engineering.

Heat Transfer 21 calculators

Compute conduction through walls, cylinders, and spheres. Analyze convection, radiation, fins, and heat exchangers with accurate engineering correlations.

Conduction Convection Radiation Transient Fins Heat Exchangers
Explore Calculators โ†’

Fluid Mechanics 8 calculators

Calculate pressure drop, Reynolds number, friction factors, and flow properties. Analyze pipe networks, open channel flow, boundary layers, and compressible flow systems.

Pipe Flow Pressure Drop Boundary Layer Compressible Flow Open Channel
Explore Calculators โ†’

Thermodynamics 7 calculators

Analyze power cycles (Rankine, Brayton, Otto, Diesel), refrigeration systems, steam properties, and energy balances for engineering systems.

Power Cycles Refrigeration Steam Tables Energy Analysis
Explore Calculators โ†’

Mass Transfer 2 calculators

Compute mass diffusion using Fick's law and stagnant film diffusion. Apply heat and mass transfer analogies with Sherwood and Schmidt correlations.

Mass Diffusion Fick's Law Stagnant Film Analogies Sherwood & Schmidt
Explore Calculators โ†’

Engineering Tools 12 tools

Quick-access tools: unit converter, dimensionless numbers calculator, material property database, steam table, psychrometric chart, pipe dimensions, control valve sizer, pump scaling, NPSH analysis, orifice plate flow, and standard atmosphere.

Unit Converter Dimensionless Numbers Material Database Steam Table (IF97) Psychrometrics Pipe Sizer Valve Sizer Pump Affinity
Explore Tools โ†’

Built for Engineers, by Engineers

โšก

Fortran-Powered

Calculations run on compiled Fortran programs โ€” the gold standard for numerical computation in engineering.

๐ŸŽฏ

Verified Accuracy

Results validated against textbook examples and established engineering correlations. View benchmarks โ†’

๐Ÿ“Š

Visual Results

Interactive charts, temperature profiles, and wall diagrams make results intuitive to interpret.

๐Ÿ†“

100% Free

All calculators are completely free. No signup required, no feature gates, no limitations.

Ready to Calculate?

Explore our growing library of Fortran-powered engineering calculators โ€” from heat conduction to open channel flow.

Start Calculating โ†’