Loading spinnerLoading...

MasterBoard™

Revolutionizing hydraulic and heavy equipment repair with cutting-edge solutions.

Product

  • Features
  • Pricing
  • Testimonials

AI Tools

  • Cylinder Force Calculator
  • Pump & Motor Calculator
  • Hose Assembly Calculator
  • Telescopic Cylinder Calculator
  • Pressure Calculator
  • Flow Calculator
  • Torque Converter
  • Seal Compatibility
  • Oil Volume Calculator
  • Maintenance Log Generator

Company

  • About
  • Careers
  • Contact

Legal

  • Privacy Policy
  • Terms of Service
  • Security

© 2026 MasterBoard. All rights reserved.

Back to Tools

Hydraulic Flow Calculator

Convert between GPM, LPM, CFM and calculate flow velocity based on pipe diameter

Flow Parameters

OR
OR

Calculation Results

Enter flow rate to convert units or calculate velocity

Flow Rate Conversions & Guidelines

Conversion Factors:
• 1 GPM = 3.785 LPM
• 1 GPM = 0.1337 CFM
• 1 LPM = 0.2642 GPM
Velocity Formula: V = Q / A
Recommended Velocities:
• Suction lines: 2-4 ft/sec
• Pressure lines: 10-15 ft/sec
• Return lines: 6-10 ft/sec
Reynolds Number: Re = ρVD/μ