Bar Bending Schedule Calculator: How to Use It (Free, Offline, No Login)

This calculator builds a complete bar bending schedule in your browser — no login, no install, and no internet connection needed once the page has loaded. Pick a shape code, type in the dimensions, and it applies the correct BS 8666:2020 formula and bend deduction automatically. This guide walks through using it from a blank page to an exported schedule.

Step-by-step: building a schedule

1. 1. Choose a shape code

   Every bar starts with a shape code — the standard BS 8666:2020 number that defines how the bar is bent. Use the built-in shape picker to find the right one; if you're not sure which code matches your bar, our shape codes guide has a diagram for every standard shape.

2. 2. Enter the dimensions

   Once a shape is selected, the calculator shows its diagram with the leg dimensions labelled A, B, C and so on. Type in the lengths from your drawing, along with the bar size (e.g. 16mm) and steel grade.

3. 3. Set the quantity

   Enter the number of members that need this bar (e.g. how many identical beams) and the number of bars per member. The calculator multiplies these together to get the total number of bars for that mark.

4. 4. Review the cutting length and weight

   As soon as the dimensions are entered, the calculator applies the correct shape formula — including the bend deduction for the bar's radius and diameter — and shows the cutting length, total length and total weight instantly. No manual lookup of deduction tables required.

5. 5. Add more bar marks

   Repeat the process for every bar mark on the drawing. Each one becomes a row in the schedule, with a running total of steel weight across the whole job.

6. 6. Export to PDF or Excel

   Once the schedule is complete, export it. The PDF export is formatted for issue and printing; the Excel export lets you filter, sort, or feed the numbers into a separate costing sheet.

Tips for a cleaner schedule

• Use consistent bar marks. Number bar marks sequentially by member type (e.g. 101 series for beams, 201 series for columns) so the schedule stays easy to scan as it grows.
• Double-check the steel grade. The bend radius and deduction depend on the grade as well as the bar size — getting this wrong under- or over-states the cutting length.
• Group by member. Enter bars member by member (all of Beam B1, then all of Beam B2) rather than jumping around — it's much easier to check against the drawing afterwards.
• Export early, export often. Export a PDF partway through a large schedule so you have a checkpoint to compare against if something needs correcting later.

Frequently asked questions

Is the bar bending schedule calculator free to use?

Yes. The calculator is free, runs entirely in your browser, and doesn't require an account or login.

Does the calculator work offline?

Yes. Once the page has loaded, the calculator runs entirely client-side and does not need an internet connection to calculate cutting lengths or weights.

Can I export my schedule to Excel or PDF?

Yes. Once you've entered your bar marks, you can export the complete schedule to a formatted PDF for issue or to an Excel file for further editing.

Does the calculator support IS 2502 as well as BS 8666?

There are two separate calculators — one for BS 8666:2020 (the British Standard) and one for IS 2502:1963 (the Indian Standard) — so you can pick the one that matches the standard your project is detailed to.

Not a substitute for a checked, engineer-approved bending schedule. Always verify dimensions, bend deductions and bar weights against BS 8666:2020 for the actual bar size and grade in use.