# Construction Calculator A1 — Construction calculator app

> Construction calculator for concrete, rebar, area, volume, and unit conversions. (iPhone/iPad app by Binary And Bricks Pvt Ltd.)

- Source: https://appshunter.io/ios/app/construction-calculator-a1/id1589484051 (this page in markdown: same URL + `.md`)
- Developer: [Binary And Bricks Pvt Ltd](https://appshunter.io/developer/1587170688)
- Category: Productivity, Utilities
- Price: Free
- Rating: 4.70/5 from 23 App Store ratings · 12 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 156 MB
- Languages: American English
- Released: 2021-10-08
- Data updated: 2026-08-24
- Monetization: ad-supported
- User reviews in markdown: https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews.md

## What is Construction Calculator A1?

The #1 construction calculator trusted by 1M+ contractors, builders, and engineers worldwide.
Construction Calculator A1 — the complete civil engineering toolkit for
contractors, builders and engineers. 500+ calculators, from a single slab to a
client-ready Bill of Quantities.

CONCRETE CALCULATOR
• Slabs, footings, columns, beams, stairs, walls & culverts
• Instant material quantities: cement bags, sand, aggregate
• Mix ratios and grade selection for any specification

REBAR & STEEL CALCULATOR
• Bar Bending Schedule (BBS) with shape codes and cutting lengths
• Weight calculator for metric and US bar sizes (#3–#11)
• Lap length, cover & spacing calculations
• Steel tonnage for structural estimates

FEET-INCHES CALCULATOR
• Add, subtract, multiply, divide in feet-inches-fractions
• No decimal conversion needed
• Running tape you can review and reuse

BILL OF QUANTITIES (BOQ) — NEW
• Send any calculation straight to a BOQ
• Organise by project, track total value and % priced
• Professional report with your company header and signature
• Export as PDF or Excel

AUTOMATIC DRAWINGS — NEW
• Calculators draw a dimensioned sketch of what you entered
• Brickwork, steel shapes, concrete sections, excavation, stairs
• Drawings and a DIMENSIONS panel included in every PDF

MATERIAL PRICE LIBRARY — NEW
• Store your own rates in your own currency
• Rates auto-fill into cost fields across the app
• Six regional presets with local materials and units

APPLE WATCH APP — NEW
• Converter, material weight, volume, diagonal and rebar on your wrist
• Prices synced from iPhone, with full calculation history

AREA & VOLUME
• 50+ shapes: rectangle, circle, triangle, trapezoid, polygons, prisms,
  cones, spheres and more
• Draw Shape and GPS Area for irregular plots
• Room area, paint coverage, flooring and excavation volumes

UNIT CONVERTER
• Length, area, volume, weight, pressure, power, speed, density and more
• Construction-specific units throughout

LEARN — NEW
• Civil engineering articles, checklists and reference charts
• Topic quizzes with instant explanations
• Daily streaks, XP and achievement badges

PROFESSIONAL FEATURES
• Save and organise calculations by project, with notes and photos
• Share estimates with clients instantly
• Construction cost estimator with breakdown charts and quotations
• Company branding on every report
• Google Drive and iCloud backup, cloud sync across devices
• Metric and Imperial, 16 languages, light and dark themes
• Works offline — calculations need no internet

SUBSCRIPTION INFORMATION
Construction Calculator Pro is available as a monthly or yearly auto-renewing
subscription, or as a one-time Lifetime purchase.

• Payment is charged to your Apple ID account at confirmation of purchase.
• Subscriptions renew automatically unless auto-renew is turned off at least
  24 hours before the end of the current period.
• Your account is charged for renewal within 24 hours prior to the end of the
  current period, at the rate of your selected plan.
• Manage or cancel your subscription in your App Store account settings
  after purchase.

Privacy Policy: https://www.binaryandbricks.com/app/privacypolicy.html
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Built for real job sites.
Download now and estimate like a pro.

## Key features

- Concrete material quantity calculation
- Rebar bending schedule and weight calculation
- Feet-inch arithmetic without decimal conversion
- Area and volume calculations for 15+ shapes
- Construction-specific unit conversions
- Bill of Quantities (BOQ) export to PDF/Excel
- Save and organize calculations by project

## Recent user reviews (10 of 12)

All indexed reviews: https://appshunter.io/ios/app/construction-calculator-a1/id1589484051/reviews.md

### 5/5 — Accurate and Easy to use

*2026-08-13*

Very useful app cor Construction calculations. It has wide range of calculators for quantity estimation, concrete, steel and other material calculations. Simple interface and quick results make it very helpful.

### 5/5 — Best app

*2026-07-28*

Very useful

**Developer response:** Thank you for the wonderful 5-star rating! 🌟 We’re delighted to know you find the app very useful. Your support means a lot to our team and motivates us to keep creating simple and practical tools for construction professionals.

### 1/5 — Bad experience

*2026-06-09*

No easy

**Developer response:** We’re sorry that your experience wasn’t as expected. The app is designed to be simple and easy to use, so we’d really appreciate knowing what specifically you found difficult. We take every review seriously and want to improve wherever needed. Please share the details with us at [techsupport@binaryandbricks.com](mailto:techsupport@binaryandbricks.com). If we’re able to resolve the issue, we’d appreciate you reconsidering your rating.

### 5/5 — Must use app

*2026-01-23*

Use full app for contractors

**Developer response:** Thank you for your support! We’re glad you find the app useful for contractors. If you have any suggestions, please email us at techsupport@binaryandbricks.com

### 5/5 — A game changer for Every Engineer.

*2025-05-25*

I’ve been using Construction Calculator A1 on my MacBook and iPad , and it’s been an absolute game changer. The app is fast , clean, and incredibly useful for daily site calculations. 
Whether it’s Area, Volume, Steel weight, or Unit conversations, every features is well-organised and easy to access. I especially love the dark theme and offline functionality. The rebar and concrete mix design tools are spot-on.
Great to see support for both metric and imperial units, and the interface adapts well to the larger screen on mac tabs. This app has easily replaced multiple tools and saved me hours of manual work.
Highly recommended for civil engineer’s, contractors and site Supervisers.

**Developer response:** Thank you for the detailed and encouraging feedback 
We’re glad to know the app has been useful for your daily site calculations across devices, and that features like offline usage, unit flexibility, and mix design tools are helping save time on real projects.
Your recommendation truly means a lot to us. Thank you for your continued support.

### 4/5 — Good but

*2025-04-10*

Good app but some thing may need to improve

**Developer response:** Thank you for your feedback! We are continuously improving the app. If you have any suggestions or issues, please email us at techsupport@binaryandbricks.com

### 1/5 — About the payment

*2023-11-18*

I read the app details and it shows it was for lifetime if we purchase once .but after I made the payment it was still the same there is not message change in the app they r asking for purchase again  .i still hve the screenshot of that successful payment . Kindly do the needful

**Developer response:** We sincerely apologize for the inconvenience caused and understand your concern regarding the purchase.

The app offers a one-time lifetime purchase, and in some cases, the purchase may not reflect immediately due to store sync issues. Kindly ensure you are logged in with the same account used for the purchase and try the Restore Purchase option available in the app.

If the issue still persists, please contact us at our support email with the payment screenshot, and we will assist you in resolving this at the earliest.

Thank you for your patience and for bringing this to our attention.

### 3/5 — Unit issue

*2023-03-31*

The area calculated is always shown in (metric)sq mtr even if you choose (imperial) sq ft as the dimensions….No provision to change the unit…

**Developer response:** Thank you for reporting this issue.

The unit display has been improved in our latest version. We request you to please update the app and check again.

Thank you for your feedback and support.

### 5/5 — Best civil engineering app

*2023-03-05*

Very easy to use. App works perfectly. Also worth to buy PRO version.

**Developer response:** Thank you for the great feedback

We’re happy to know the app is easy to use and working well for you. Thank you for recommending the Pro version and for your support.

### 1/5 — Basic calculations are wrong

*2023-01-31*

Calculations as simple as finding the area of a 4 sided object are false. Wouldn’t trust this if it were the only calculator available.

**Developer response:** Thank you for sharing your feedback.
The area calculation for four-sided shapes follows standard formulas and works correctly when inputs and units are selected appropriately. In some cases, confusion can occur due to unit selection or input method.
We request you to please check the latest version and verify the inputs and units used. If you still face any issue, kindly contact our support team with details so we can review it further.
We’re always happy to help clarify and assist.

## Frequently asked questions about Construction Calculator A1

### What types of concrete calculations does Construction Calculator A1 offer?

Construction Calculator A1 offers calculations for slabs, footings, columns, beams, stairs, and circular slabs. It provides instant material quantities for cement bags, sand, and gravel, along with mix ratios for any project specification.

### Can Construction Calculator A1 help with rebar and steel estimations?

Yes, Construction Calculator A1 includes a rebar and steel calculator. It supports Bar Bending Schedule (BBS) with shape codes, calculates weight for all bar sizes (#3-#18), and computes lap length, cover, and spacing.

### How does Construction Calculator A1 handle measurements in feet and inches?

Construction Calculator A1 features a dedicated feet-inches calculator that allows users to add, subtract, multiply, and divide measurements in feet-inches-fractions without needing decimal conversion. This is ideal for framing and lumber calculations.

### What professional features are included in Construction Calculator A1?

Professional features include a Bill of Quantities (BOQ) with PDF/Excel export, the ability to save and organize calculations by project, instant sharing of estimates with clients, material cost estimation, and company branding on reports.

### Does Construction Calculator A1 have ads?

Yes, Construction Calculator A1 contains advertisements. As a free application, it utilizes ads to support its development and maintenance.

### What is the update frequency for Construction Calculator A1?

Construction Calculator A1 was last updated on January 24, 2026, with version 2026.01.01. The release date was October 8, 2021. This indicates a recent update, suggesting ongoing support.

### On which devices can I use Construction Calculator A1?

Construction Calculator A1 is available for iPhone and iPad devices. It is designed for iOS users who need robust construction calculation tools.

### What is the age rating for Construction Calculator A1?

Construction Calculator A1 has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions.

## Version history (last 5 releases)

### 2026.08.02 — 2026-08-18

NEW — Formwork Sheet (Pro)
Plan a whole project's shuttering in one place. Build an element
schedule and the app derives your ply sheets, battens, walers, ties,
props, back-props and a complete scaffold list from it — then tells
you the PEAK quantity you actually need to buy, not the cumulative
area you bill. Includes cycle planning, de-shuttering sets and eight
validation checks that flag a take-off before you issue it.
Export a branded PDF, push quantities to a BOQ, or send a row
straight in from any shuttering calculator.

NEW — Brick Size Library
Your own brick and block sizes, saved once and used everywhere.
Region-aware seed catalogue, a default per brick/block type, and
auto-fill across all 24 brickwork calculators. Backed up and synced
with the rest of your data. Open it from Settings or the Brick Work
page.

NEW — False ceiling calculators
Gypsum Ceiling, POP Ceiling and Grid Ceiling, with section and plan
drawings, regional advisories, and material rates stocked for all
six regions.

IMPROVED — Shuttering, redrawn
17 element calculators, each with a new two-view drawing that shows
WHICH FACES GET FORMWORK - a footing is sides only, a beam is soffit
plus two sides. Tap any field and its dimension lights up on the
drawing.

IMPROVED — Quantity tab
Calculators are now ordered by how relevant they are to your role
and region. Nothing is hidden; your favourites still come first.

### 2026.08.01 — 2026-08-11

This is our biggest update yet.

DRAWINGS
• Calculators now generate a dimensioned drawing of exactly what you entered
• The diagram highlights the dimension you're typing, so you always know
  which side is which
• Drawings, a DIMENSIONS panel and your company branding are included in
  PDF exports

WORK ANYWHERE
• Apple Watch app — converter, material weight, volume, diagonal and rebar
• Use the app in any browser
• Cloud sync across your devices, plus Google Drive and iCloud backup
• Sign in with Google or Apple

BUILT FOR YOUR REGION
• Six regions with local materials, units and bar sizes
• City selector applies a local cost multiplier
• Region-aware mix design, rebar standards and reference data

CONSTRUCTION COST CALCULATOR
• Rebuilt with Standard / Premium / Luxury comparison and a phase timeline
• Cost breakdown charts, professional quotation PDF, Excel and image export

NEW CALCULATORS & TOOLS
• Rebar Tools — six new calculators, lap length with splice cases, and a
  cover block analyzer
• Volume calculators now give material weight and density
• Unit converter now converts prices between units
• Concrete Strength, plus 28 more concrete calculators with their own diagrams

LEARN
• Study articles, checklists and reference charts
• Topic quizzes with instant explanations
• Daily streaks, XP, stars and achievement badges

FASTER TO USE
• Redesigned home with Continue Working, pinned tiles and collapsible
  categories
• Calculator keypad merges concrete, steel and roof functions, with
  Area/Volume/Perimeter power-ups, slope and centre-to-centre spacing
• Two-column inputs, pinned diagrams and auto-calculate on calculator pages
• Built-in help with worked examples, in all 16 languages
• Quick actions — long-press the app icon for your most-used tools

Questions or ideas? constructioncalculatorallinone@gmail.com

### 2026.01.01 — 2026-01-24

What’s New

Tired of searching for the right construction formula? We’ve got you covered.

• Added new calculators for Water Tanks, Walls, Staircases, Footings, Gutters, and Tubes to handle daily site calculations easily
• Enhanced House Cost Calculator to generate professional quotations and branded PDFs for clients
• Can’t find a formula? Use Custom Calculators to create and save your own calculations
• Keep all project details organized with Rich Notes, project-wise folders, and support for images, videos, and file attachments
• Faster and smoother construction calculations with quick-action buttons designed for site use
• Access essential material details instantly with the new Material Library

This update focuses on saving time, reducing manual work, and making construction calculations simpler and more organized.

### 2024.09.02 — 2024-10-14

* Multiple language support added
* Dam & Sewage Calculations: Added capacity, flow, and tank design.
* Water Supply & Rail: New tools for demand, pump power, gradient, and braking.
* Road & Brickwork: Pavement, slope, bond types, and paver block updates.
* Excavation: One trip volume and trip count.
* Other Enhancements: BOQ sharing, quiz, and location-based units.

### 2024.09.01 — 2024-10-05

* Multiple language support added
* Dam & Sewage Calculations: Added capacity, flow, and tank design.
* Water Supply & Rail: New tools for demand, pump power, gradient, and braking.
* Road & Brickwork: Pavement, slope, bond types, and paver block updates.
* Excavation: One trip volume and trip count.
* Other Enhancements: BOQ sharing, quiz, and location-based units.

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## More apps by Binary And Bricks Pvt Ltd

- [Concrete Calculator All In One](https://appshunter.io/ios/app/concrete-calculator-all-in-one/id1587170686)
- [Construction Calculator A1 Pro](https://appshunter.io/ios/app/construction-calculator-a1-pro/id1587368490)
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- [Financial Calculator India](https://appshunter.io/ios/app/financial-calculator-india/id1588612062)
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All apps by Binary And Bricks Pvt Ltd: https://appshunter.io/developer/1587170688

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*