Civil Site Calculator

Professional site calculations

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

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.

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34 calculators now available (up from 32), including two new additions: Retaining Wall Stability Check — Overturning, sliding, and eccentricity checks for cantilever walls (Field Engineer Pack) Parking Lot Striping / Stall Count — Bay layout, stall count, and ADA/van-accessible counts by dimension (Field Engineer Pack) Plus new tools to help you organize and share your work: Project Folders — Organize saved calculations by job site, with notes and addresses Save to Folder — Save any result directly into a project folder from any calculator Export PDF — Generate a branded PDF of your results, ready to share or print Cut/Fill Balance Summary — Track running net cut/fill balance across multiple stations This version also introduces anonymous, privacy-friendly usage analytics to help us understand which calculators are most useful — no personal data is collected or shared. See our Privacy Policy for details. Plus general performance improvements and bug fixes.

Version 1.5.0

The developer, THOMAS STEVEN MOLNAR, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Linked to You

    The following data may be collected and linked to your identity:

    • Purchases

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

The developer has not yet indicated which accessibility features this app supports. Learn More

Information

Seller
TM Engineering & Design LLC
Size
36 MB
Category
Utilities
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPad
    Requires iPadOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 TM Engineering & Design
  • Privacy Policy

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