SiteGrade puts the calculations you run every day — concrete and rebar takeoffs, pipe and channel flow, earthwork, drainage, riprap and roadway geometry — in one fast, offline app. No hunting through spreadsheets. No signal required. Just the answer, on site or at your desk.
20+ calculators · Works offline · No ads · No subscriptions
Most civil work stalls on the same quick numbers: how many cubic yards of concrete, what size pipe carries this flow, how much cut and fill, what D50 protects the outlet. SiteGrade answers them instantly, with results that update as you type and a one-tap copy for your estimate or field notes.
Because it runs fully offline, it works in a trench, a deep cut, or a basement with no signal — exactly where you need it most.
Concrete volume (slabs, footings, columns), rebar takeoffs, slope and grade, pavement quantities (asphalt tonnage, aggregate base, tack coat), and a civil unit converter.
Pipe capacity and pipe sizing by Manning's equation, open-channel flow, ditch sizing, the Rational Method, time of concentration, NRCS curve number runoff, detention volume, and weir & orifice outlet control.
Riprap D50 sizing (Isbash with a USBR cross-check) and culvert outlet riprap aprons by FHWA HEC-14.
Cut and fill by average end area with soil swell and shrink and truck-load estimates.
ADA ramp and cross-slope checks, and impervious area and lot-coverage percentages.
Beam deflection and moment, horizontal and vertical curves, and AASHTO stopping sight distance.
Every calculator runs on-device. No signal, no problem — the app is built for the field, not the Wi-Fi.
Big, readable inputs and results that update as you type. No submit button, no zooming, no fumbling on a phone in the sun.
Copy any result into an estimate, or save it under a project name and pull it back up later from your history.
SiteGrade isn't a black box. The drainage and erosion tools follow recognized references — Manning's equation, the Rational Method, NRCS TR-55, FHWA HEC-11, HEC-14 and HEC-22 — and every calculator links to its governing standard so you can check the method or clarify an assumption on the spot. You get the number and the basis for it.
SiteGrade is for planning and preliminary sizing. Always verify against project drawings, specifications, and your governing agency's design criteria before final design.
Civil engineers, site and drainage designers, land surveyors, contractors, estimators, and engineering students — anyone who needs a reliable civil calculation fast, in the field or at the desk.
If you've been running these numbers in a spreadsheet or on a dedicated hardware calculator, SiteGrade puts them all in the phone that's already in your pocket.
Plenty of civil calculator apps bury the answer under pop-up ads or lock basic tools behind a monthly fee. SiteGrade doesn't. It's a clean, focused tool that respects your time and your screen — a one-time purchase, with no ads and nothing to subscribe to.
20+ calculators. Works offline. No ads. No subscriptions.
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