Construction Calculator

Grid Developer

Contains adsIn-app purchases

About this app

Construction Calculator is an offline construction calculator for people who build things: concrete calculator, rebar calculator, brick, tile, steel, scaffold and pipe volume - with a material estimator and cost estimator that work with no signal.

No account. No signup. The app works anywhere - a job site, a basement, a rooftop - and it never sells your data because it never needs the network.

WHAT YOU CAN DO
- Concrete calculator: slabs, footings, columns and walls - bags, volume, cost.
- Rebar calculator: footings, beams and ties - steel weight and volume in one tap.
- Brick, tile, beam, column, roofing, scaffold, excavation, asphalt and pipe volume calculators.
- Unit converter: metric and imperial, plus construction units. Use this unit converter offline on the job.
- The material estimator and cost estimator build as you work.
- Save projects and reopen them anytime.
- Export a clean, print-ready PDF or structured Excel file.

MADE FOR THE FIELD
- This construction calculator works offline on site - even with no signal.
- Big numbers and large buttons, readable in daylight and on the move.
- Smart defaults and quick presets to cut your typing.
- Dark mode for evening planning.
- Every result can be copied or shared in one tap.

FREE, WITH A PRO OPTION
- All calculators are fully free. No paywall in the middle of a calculation.
- The free version shows a small banner ad; Pro removes it for good.
- Pro also removes the limits on saved projects and unlocks branded PDF export and full-project Excel export.
- Pro is a one-time or yearly purchase - your choice.

Questions or feedback? We read every review.

What’s new

Your go-to toolkit for construction math - estimate, convert, and export like a pro.

The Construction Calculator puts 13 essential construction calculators, a unit converter, and project estimating in one app - built by builders, for builders.

13 construction calculators
Concrete, rebar, brick, tile, beam, column, roofing, steel weight, scaffold, excavation, asphalt, pipe volume, and paint - with instant results and clear, step-by-step inputs.