Steel Quantity Estimator
A planning thumb-rule for reinforcement steel from concrete volume — not a structural design.
This tool gives a quick planning estimate of reinforcement steel weight from a concrete volume, using a thumb-rule percentage. Enter the concrete volume and element type to get an indicative steel tonnage for budgeting — not a bar-bending schedule or a structural design.
Planning thumb-rule only — NOT a structural design
This is a rough material-budgeting figure. The actual steel — bar sizes, spacing and quantity — must come from a structural engineer's drawings (bar bending schedule). Never build from this number.
= 35.31 cft
Element type (sets a typical steel %)
Assumptions — edit to match your site
Steel percentage is by volume of concrete; ranges are typical, not rules. Steel density 7,850 kg/m³.
How it's calculated
Steel = volume × % × density
= 1 m³ × 0.8% × 7,850 kg/m³ = 63 kg (0.063 ton)
Indicative estimate only — quantities and prices vary by site, materials and method. Always verify with your contractor or vendor before buying.
How this calculator works
Steel is estimated as a percentage of concrete volume — a thumb rule that varies by element (around 0.7–1% for slabs, more for beams and columns) — then converted to weight using a steel density of 7850 kg/m³.
This is only for early budgeting. The real steel quantity comes from your structural drawings and bar-bending schedule.
Common questions
- Is this accurate enough to order steel?
- No — it's a budgeting thumb rule. Order against your engineer's bar-bending schedule, which accounts for actual bar sizes, spacing and laps.
- What percentage does it use?
- A typical range by element type, which you can adjust. Slabs are lighter (~0.7–1%); beams and columns are heavier.
Last updated: 8 July 2026
These tools are free
To turn an estimate into reality, hire verified professionals or order materials from suppliers on Mahprotocol.