Highway and Road Calculator

Highway and Road Calculator contains 69 calculators and converters, that can quickly and easily calculate and convert different highway, road and civil engineering parameters. Automatic & accurate calculations and conversions with every unit and value changes.

*** Available in Metric and Imperial Units ***

*** Available in English, Français, Español, Italiano, Deutsch, Português & Nederlands ***


Highway and Road Calculator contains following 37 calculators:

• Radius of Curve - Arc Definition (Circular Curves)
• Radius of Curve - Chord Definition (Circular Curves)
• Degree of Curve - Arc Definition (Circular Curves)
• Degree of Curve - Chord Definition (Circular Curves)
• Tangent Distance (Circular Curves)
• External Distance (Circular Curves)
• Midordinate (Circular Curves)
• Length of Long Chord (Circular Curves)
• Length of Curve (Circular Curves)
• Central Angle for Portion of Curve - Arc Definition (Circular Curves)
• Central Angle for Portion of Curve - Chord Definition (Circular Curves)
• Tangent Offset (Circular Curves)
• Chord Offset (Circular Curves)

• Rate of Change of Grade (Parabolic Curves)
• Elevation of Point of Vertical Curvature (Parabolic Curves)
• Elevation of Point x distant from Point of Vertical Curvature (Parabolic Curves)
• Distance from Point of Vertical Curvature to Lowest Point on a Sag Curve/Highest Point on a Summit Curve (Parabolic Curves)
• Elevation of Lowest Point on a Sag Curve/Highest Point on a Summit Curve (Parabolic Curves)

• Minimum Length of Crest Vertical Curves (Sight Distance < Length of Vertical Curves)
• Minimum Length of Crest Vertical Curves (Sight Distance > Length of Vertical Curves)
• Rate of Vertical Curvature

• Structural Number (Surface Course)
• Structural Number (Base Course)
• Structural Number (Subbase Course)
• Structural Number (Pavements)

• Minimum Length of Spiral Curve
• Thrust of Structure (Culverts)
• Flexibility Factor
• Ring-Compression Stress

• Horizontal Deflection of Pipe (Iowa Formula)
• Design Pressure - Corrugated Steel Structures (Height of Cover < Pipe Diameter)
• Design Pressure - Corrugated Steel Structures (Height of Cover >= Pipe Diameter)
• Compressive Thrust (Conduit Walls)
• Ultimate Wall Stress (294 > Ratio of Pipe Diameter and Radius of Gyration of Pipe Cross Section < 500)
• Ultimate Wall Stress (Ratio of Pipe Diameter and Radius of Gyration of Pipe Cross Section > 500)
• Design Stress of Wall
• Pipe Wall Area


Highway and Road Calculator contains following 32 converters:

• Acceleration
• Angle
• Area
• Density
• Energy/Work
• Flow Rate (Mass)
• Flow Rate (Volume)
• Fluid
• Force
• Frequency
• Hardness
• Length
• Mass
• Metric Weight
• Metrology
• Moment of Force
• Moment of Inertia
• Prefixes
• Pressure
• Radiation
• Specific Heat Capacity
• Specific Volume
• Temperature
• Thermal Conductivity
• Thermal Expansion
• Time
• Torque
• Velocity
• Viscosity (Dynamic)
• Viscosity (Oil & Water)
• Viscosity (Kinematic)
• Volume

Key Features:
• Complete coverage of calculators and converters in highway, road and civil engineering parameters.
• Automatic calculation & conversion of the output with respect to changes in the input, options and units.
• Formulas are provided for each calculator.
• Extremely accurate calculations and conversions.
• Professionally and newly designed user interface that speeds up data entry, easy viewing and calculation speed.

Most comprehensive highway and road calculator