Civil All in One Calculator

Civil All-in-One Calculator
Calculate. Estimate. Build.

A complete, offline-first toolkit built for civil engineering students, site engineers, structural engineers, surveyors, quantity surveyors, and contractors — everything you need on site or in the office, with no internet connection required.

WHY THIS APP

Most calculator apps give you one formula and a blank input box. Civil All-in-One Calculator gives you the formula used, every substituted value, the correct units at each step, and the relevant engineering reference — so you're never just trusting a black-box number.

23 REAL CALCULATORS ACROSS 8 CATEGORIES

Structural
• Area of Rectangle & Circle
• Load on Beam, Moment of Inertia
• Column Design & Beam Design (IS 456:2000)

Concrete
• Concrete Volume (slabs, beams, columns, footings)
• Concrete Mix Ratio (M10–M60 grade lookup, IS 456)
• Cement Bags, Concrete Weight, Formwork Area, Brick Calculator

Rebar
• Steel Bar Weight
• Multiple Rebar Weight / Bar Bending Schedule (BBS)

Survey
• Basic Survey Distance
• Slope & Gradient

Roads, Plumbing, Electrical & Finishing
• Pipe Flow Capacity, Cable Sizing, Paint Quantity, Flooring Area, and more

BUILT FOR REAL WORK, NOT JUST DEMOS

• Unit Converter — switch between SI and Imperial instantly, with support for regional unit preferences by country
• Projects — organize calculations under real project records: name, type, location, floors, area, and status
• Calculation History — every calculation is saved automatically, so you can find it again without redoing the math
• Favorites — pin the calculators you use every day
• Global Search — find any calculator, tool, or project in seconds

WORKS COMPLETELY OFFLINE

No account required. No internet connection needed. Every calculation, saved project, and preference lives on your device — your data stays yours.

NO ADS. NO SUBSCRIPTIONS. NO PAYWALLS.

This app has zero advertisements, zero subscription screens, and zero premium locks. Every calculator is fully available from the moment you install.

BUILT FOR THE WAY YOU WORK

• Light and dark themes, matching your system setting
• Available in English, Hindi, Spanish, French, and Arabic (with right-to-left support)
• Clean, precise, distraction-free design — built for quick answers on a job site, not scrolling through clutter

AN HONEST ENGINEERING DISCLAIMER

This app is a calculation aid, not a substitute for professional engineering judgment. Structural design calculators are scoped to specific, well-defined cases and clearly flag when a result falls outside that scope. Always verify results against applicable codes and have designs reviewed by a licensed structural engineer before construction.

Download Civil All-in-One Calculator and carry a complete civil engineering toolkit in your pocket — offline, ad-free, and built to last.