Civil Site Calculator

Civil Site Calculator — Field Tools for the Job Site

Unlock the full Field Engineer Pack for just $0.99 — a one-time purchase, no subscription, works forever.

Whether you're a licensed engineer, contractor, or homeowner tackling a site project, Civil Site Calculator puts professional-grade calculations in your pocket. Fast, accurate, and built for real field conditions.

FREE CALCULATORS — NO PURCHASE NEEDED Get started immediately with these free tools:

• Percent Grade Calculator
• Rise / Run Converter
• Ramp Slope Checker (ADA)
• Parking Space Count (ADA/ADAAG)
• Impervious Surface %
• Cut & Fill Estimator
• Wall Height / Permit Flag
• Area Converter

FIELD ENGINEER PACK — $0.99 UNLOCKS 24 MORE

Stormwater & Drainage: Rational Method, Manning's Pipe Flow, Time of Concentration, Detention Pond Volume, Culvert Sizing, Sediment Basin, Curve Number (CN)

Earthwork & Grading: Cut & Fill by Cross-Section, Soil Swell/Shrink, Truck Load Estimator, Finished Floor Elevation, Minimum Drainage Slope

Lot Coverage & Zoning: Floor Area Ratio, Buildable Area, Lot Coverage Checker

Retaining Walls & Foundations: Surcharge Load Estimator, Bearing Capacity Estimator

Pavement & Materials: Asphalt Tonnage, Aggregate/Stone Base, Concrete Volume, Pavement Cross-Section

Unit Conversions: Volume Converter, Length/Elevation Converter

ADA Compliance: Cross-Slope Checker

BUILT FOR THE FIELD

• Imperial and metric units — toggle in Settings
• Search across all 32 calculators instantly
• Star your most-used calculators as Favorites for one-tap access
• Share results instantly via Messages, Email, or Notes
• Works offline — no internet required
• Clean, fast interface designed for use on a job site

WHO USES THIS APP For engineers, contractors, homeowners, municipal staff, and landscape architects.

DISCLAIMER: Results are for estimation purposes only and must not be used for construction or permitting without verification by a licensed professional engineer. No engineer-client relationship is created by use of this app.

Developed by TM Engineering & Design — New Jersey licensed civil engineering.