Count → Spacing (Equal)
Input L=5000 mm, left=50 mm, right=50 mm, n=11
Output Le=4900 mm, pitch=490 mm, x0=50, x10=4950
Rebar Pitch Calculator
Compute count ↔ spacing, edge offsets, and coordinate lists in one screen.
Supports equal, centered, and one-side flush layouts with URL sharing and CSV/JSON/SVG export.
Switch instantly between count and spacing modes
Export x-coordinate list and interval table
Share current inputs through query URL
How to use
- Enter total length L and left/right edge offsets, then confirm effective length Le.
- Choose count → spacing or spacing → count, and input the required values.
- Pick a layout rule (equal, centered, or one-side flush) and review summary chips and coordinates.
- Copy or download CSV/JSON/SVG as needed.
Examples
Spacing → Count (Centered)
Input L=5000 mm, left=50 mm, right=50 mm, pitch=600 mm, round=ceil, layout=centered
Output Count is clamped to fit, and the remainder is split equally on both sides
FAQ
Why can input spacing and effective spacing be different?
In Equal spacing mode, endpoints are fixed and spacing is recalculated to divide the effective length evenly.
Can centered or flush mode reduce the count?
Yes. When fixed spacing does not fit, the tool automatically adjusts to the largest fitting count.
What happens when n becomes 1?
Only one bar is placed and spacing is undefined. A warning is shown above the results.
Can this tool validate structural compliance?
No. This tool performs geometric layout calculation only. Structural validity and code compliance must be checked separately.