Steel BBS Calculator A1 Pro
By Binary and BricksBuild a complete bar bending schedule from shape codes — cutting lengths, weights and totals — with rebar testing references, study notes and quizzes built in.
Get the app
Opens Google Play or the App Store, depending on your device.
13+standard shape codes
10rebar tests referenced
150+countries using our apps
Pro tier
Pro unlocks every shape code, the full testing library and unlimited saved schedules.
What's inside
Bar bending schedule from standard shape codes
Cutting length, total length and weight per bar mark
Footing, column, beam and slab reinforcement
Seismic zone lap length
Epoxy-coated bar lap length
Cover for reinforcement
Rebar size charts by country
Rebar testing references — tensile, rebend, bend, bond, fatigue and more
Study section on reinforcement fundamentals
Quizzes to test your knowledge
Share or save any schedule
A look inside the app
Why professionals use it
Shape codes, not spreadsheets
Pick the shape, enter the leg dimensions, and the app returns cutting length and weight with the bend deductions already applied.
Built-in reference library
Rebar size charts for different countries, physical properties, checklists and cover requirements — the things you would otherwise look up mid-schedule.
Testing references on hand
Tensile, rebend, bend, chemical composition, bond strength, corrosion, fatigue and hardness tests, each with information and a generated report.
Try it free first
The same calculations, free in your browser
No download needed. When you want them on site without a signal, the app takes them offline.
From the Steel BBS Calculator A1 Pro blog
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Learn the method, not just the answer
Our guides explain the calculations behind this app, formula by formula.