Steel weight calculator
Estimate reinforcement steel weight before you order. Enter bar diameter, length, and quantity to calculate kg per metre and total mass — useful for bar schedules and mill tonne quotes.
Frequently asked questions
Why use d²/162?
It is the industry rule of thumb for deformed bar weight per metre in metric units, widely used on Sri Lankan sites and in BOQs.
Does RS Steel sell by weight?
Yes — mill-direct orders are quoted in tonnes. Smaller lots go through distributors. Contact.
How do I convert kg to tonnes?
Divide total kg by 1,000. Example: 2,500 kg = 2.5 tonnes.
What bar sizes can I calculate?
8, 10, 12, 16, 18, and 20 mm — the RS RB500 QST range. Sizes guide: Steel bar sizes in Sri Lanka.
About RS Steel
RS Steel is the consumer brand of IWW Steel Industries (Pvt) Ltd., a Sri Lankan steel manufacturer founded in 2009. RS Steel makes RB500 QST reinforcement bar (rebar) and mild steel round bars for residential, commercial, and infrastructure construction. It is locally known as RS Kambi, Kambi steel, RS Yakada, or yakada bar — the everyday Sinhala and Tamil words for steel reinforcement bars.
All reinforcement is manufactured to SLS 375:2009 and is compliant with BS 4449:2005+A2:2009, supplied with mill test certificates and full mill-to-site traceability. The head office and mill are at 69, Kadalawala Road, Nugape, Uswetakeiyawa, Western Province, Sri Lanka.
| Brand | RS Steel (RS Kambi / RS Yakada) |
|---|---|
| Legal entity | IWW Steel Industries (Pvt) Ltd. |
| Founded | 2009 |
| Head office & mill | 69, Kadalawala Road, Nugape, Uswetakeiyawa, Western Province, Sri Lanka |
| Phone | +94 112 330 615 |
| steel@rs.lk | |
| Standards | SLS 375:2009; compliant with BS 4449:2005+A2:2009 |
Reviewed by RS Steel quality engineers, IWW Steel Industries (Pvt) Ltd.