Construction Calculator - Calx
Concrete, Feet-Inch & Fraction
Only for iPhone
$9.99 · Designed for iPhone. Not verified for macOS.
iPhone
80+ builder tools in one app: concrete mix, rebar & steel weight, area, volume, 40+ converters and a true feet-inch fraction calculator. Save every result to projects.
Built for the job site: Construction Calculator A1 turns the math you do every day — concrete orders, rebar takeoffs, feet-inch measurements — into a few taps.
FEET-INCH & FRACTION MATH
• Add, multiply and divide in feet, inches and fractions down to 1/16"
• Unit-aware: 3 ft × 4 ft = 12 ft², mixing metric and imperial freely
• L / W / H memory keys, cost math with %, history and one-tap copy
CONCRETE
• Mix designer for M10–M50 grades: cement bags, sand, aggregate and water
• 6 pour geometries — slabs, columns, footings or direct volume
• Dry-volume factor and total weight built in
STEEL & REBAR
• Slab, column, beam and footing reinforcement with CAD-style section details
• Bar weight, spiral/helix rebar, BBS shape codes (BS 8666:2020)
• Honest estimating notes — check final quantities against your bar schedule
AREA · VOLUME · CONVERT
• 19 area shapes and 17 volume shapes with clear diagrams
• Surface area and material-to-weight conversion
• 40+ unit converter categories with favorites and copyable results
PROJECTS
• Save any result to a project with inputs and date
• Length, area, volume and cost totals per project
• Share a text summary in one tap
Metric and imperial everywhere. No account needed. Works offline.
Whether you're a contractor, estimator, civil engineer, mason, carpenter or a weekend builder — if your tape measure sees daily use, this calculator belongs next to it.
Terms of Use: https://karakuserdi.github.io/terms.github.io/
Privacy Policy: https://karakuserdi.github.io/privacypolicy.github.io/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, riza erdi karakus, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- riza erdi karakus
- Size
- 40.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © Rıza Erdi Karakuş
