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 26 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, Retaining Wall Stability Check Pavement & Materials: Asphalt Tonnage, Aggregate/Stone Base, Concrete Volume, Pavement Cross-Section Unit Conversions: Volume Converter, Length/Elevation Converter ADA Compliance: Cross-Slope Checker, Parking Lot Striping / Stall Count

BUILT FOR THE FIELD

Imperial and metric units — toggle in Settings Search across all 34 calculators instantly Star your most-used calculators as Favorites for one-tap access Organize saved results into Project Folders by job site Export results as a branded PDF, ready to share or print 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.