Worldwide rebar weight calculator
Calculate rebar quantities and weights from a bar schedule - enter mark, diameter, length and quantity for each bar, and see the total weight, grouped by diameter, as a bundle you can read at a glance.
The Schedule tab's rebar bundle and running totals, the Breakdown tab's weight share by diameter, and the Guide tab's standard bar diameter reference table.
Schedule tab - bar schedule and rebar bundle
Breakdown tab - weight share by diameter
Guide tab - standard bar diameter reference
The headline visual draws your schedule as a bundle of cross-sections, one row per diameter, thickest first - a physical reading of what's on order, not just a table.
Add as many rows as you need - mark, diameter, length and quantity - with weight calculated per row and rolled up into running totals as you type.
See bar count, length and weight for every diameter in the schedule, plus a weight-share bar showing which size dominates the total tonnage.
A built-in reference table of standard bar diameters and their nominal mass per metre, with typical-use notes for anyone unfamiliar with bar sizing.
Weight per row uses diameter squared divided by 162 - the standard steel reinforcement formula, matching the figures on any standard rebar weight table.
Copy a plain-text summary or export it as a standalone HTML file. Light/dark theme remembers your choice, and rotating sample schedules let you explore the app.
Tekla Structures is a well-known professional BIM package used for full 3D reinforcement detailing. It's built for structural detailers on complex jobs, not a quick bar-schedule check on site - here's how a focused, one-off tool compares.
| Feature | Rebar Weight Calculator | Tekla Structures |
|---|---|---|
| Pricing model | One-off purchase after a free trial | Enterprise licence, roughly $2,500-$8,000+ per seat |
| Works fully offline | ✓ | ✓ |
| Instant standalone bar-schedule/weight check | ✓ | ✕ |
| Full 3D reinforcement detailing & clash detection | ✕ | ✓ |
| Standard nominal mass formula, quick diameter breakdown | ✓ | ~ |
| Built for a site manager/estimator rather than a structural detailer | ✓ | ✕ |
| Requires specialist training | ✕ | ✓ |
| Cost scales with the size/complexity of the job | ✕ | ✕ |
Comparison based on Tekla Structures' publicly listed pricing and features as of August 2026 (softwarefinder.com, capterra.com, saasworthy.com) - pricing and features change over time, so check tekla.com for current details. Tekla Structures is a trademark of its respective owner; this comparison is for informational purposes and isn't sponsored by or affiliated with Trimble/Tekla.
Rebar Weight Calculator is a Windows desktop app, free to try from the Microsoft Store.
Yes - Rebar Weight Calculator uses the same shared Metre2 account as Vector, Forma and every other Keystone app. Sign in once and it works everywhere.
The standard nominal mass formula for steel reinforcement: diameter squared divided by 162, giving kilograms per metre. This matches the figures on standard rebar weight tables.
No - it's a nominal mass calculation from mark, diameter, length and quantity, not a substitute for a structural engineer's bar bending schedule. Always confirm laps, bends and cover with the project's actual RC design.