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🔧 Konvertibly Engineering Calculator

Professional engineering calculations for pressure, torque, stress, force, and more. Precision tools for engineers and technical professionals.

Conversion Result

Common Engineering Calculations
100 PSI
→
6.895 bar
1 atm
→
760 Torr
100 N
→
22.48 lbf
1000000 Pa
→
1 MPa
10 N⋅m
→
7.376 lb⋅ft
10 m/s
→
32.81 ft/s
1000 kg/m³
→
62.43 lb/ft³
0.001 m³/s
→
15.85 GPM
Engineering Categories
⚡

Pressure

PSI ↔ Bar Pascal ↔ ATM kPa ↔ Torr MPa ↔ PSI
🔧

Torque

N⋅m ↔ ft⋅lbf in⋅lbf ↔ kgf⋅m dN⋅m ↔ oz⋅in
📐

Stress

Pa ↔ PSI MPa ↔ ksi GPa ↔ Msi
💪

Force

N ↔ lbf kN ↔ kip dyne ↔ oz kgf ↔ lbf
⚖️

Moment

N⋅m ↔ ft⋅lbf kN⋅m ↔ ft⋅kip
🌊

Flow Rate

m³/s ↔ GPM L/min ↔ CFM L/s ↔ ft³/min
🚀

Velocity

m/s ↔ ft/s km/h ↔ mph ft/min ↔ m/min
📈

Acceleration

m/s² ↔ ft/s² g ↔ m/s² g ↔ ft/s²
🎯

Density

kg/m³ ↔ lb/ft³ g/cm³ ↔ oz/in³ kg/L ↔ lb/gal
🌀

Viscosity

Pa⋅s ↔ cP m²/s ↔ cSt poise ↔ cP

About Pressure Drop

Pressure drop (ΔP) is the reduction in fluid pressure along a pipe or duct caused by friction and fittings. Correct ΔP calculation is essential for pump/fan sizing.

How It Works

Darcy-Weisbach: ΔP = f × (L/D) × (ρv²/2). f from Moody chart (depends on Re and roughness ε/D). Minor losses: ΔP_minor = K × (ρv²/2). Total system head = friction + minor + static.

Reference Values & Examples

  • 100 m of 50 mm steel pipe, water at 1.5 m/s: ΔP ≈ 20 kPa
  • Gate valve (fully open): K ≈ 0.2 (very low loss)
  • Globe valve (fully open): K ≈ 10 (high loss — avoid where possible)
  • 90° elbow (screwed): K ≈ 1.5

Common Applications

  • Pipe and duct system design
  • Pump and fan selection
  • HVAC and process engineering
  • Hydraulic machinery sizing
  • Chemical and environmental engineering projects

Did You Know?

The Reynolds number — determining whether flow is laminar or turbulent — was derived by Osborne Reynolds in 1883 using dye injected into glass pipes. His original experimental apparatus is still on display at the University of Manchester.

Common Mistake

Neglecting minor losses in complex pipe networks. In a system with many fittings, valves, and bends, minor losses can exceed pipe friction losses — in short runs of 1–5 m, minor losses may dominate by 2–5×.