Figiva Edge Calc
Edge Reactive Calculator

Rebar Size & Weight Calculator (ASTM A615 / A706)

Calculate nominal diameter, cross-sectional area, unit weight per foot/meter, and total rebar weight for standard US imperial (#3 to #18) and metric reinforcing bars.

Input Parameters

Auto-calculates on change

Live Edge Calculation

< 5ms latency
Nominal Diameter (Inches)
0.50 in
Metric Diameter (mm)
12.70 mm
Cross-Sectional Area
0.20 sq in
Linear Unit Weight
0.67 lbs/ft
Total Reinforcing Steel Weight
66.80 lbs
Total Weight (Short Tons)
0.03 tons

Underlying Computational Formula

Nominal Diameter = Size Number ÷ 8 inches; Unit Weight = 0.167 × (Size Number)² lbs/ft; Weight = Unit Weight × Length × Quantity

Frequently Asked Questions

How does the Rebar Size & Weight Calculator (ASTM A615 / A706) calculate outputs?

This engine executes deterministic calculations on the Cloudflare edge runtime using the standard formula: Nominal Diameter = Size Number ÷ 8 inches; Unit Weight = 0.167 × (Size Number)² lbs/ft; Weight = Unit Weight × Length × Quantity. Calculations execute in under 10ms with zero client-side JavaScript hydration lag.

Can I automate this calculation with an API or AI agent?

Yes. POST to https://figiva.com/api/calculate/rebar-sizes/ with parameter keys matching this form. You will receive structured JSON results with zero hallucination.

Is this calculator completely free?

Yes. All calculation engines on CalcSite by Figiva are 100% free with zero paywalls, zero registration requirements, and zero advertising cookies.

Related Calculators

FMCG Trade Scheme & Margin Calculator slug: fmcg-scheme Labour-to-Sales Ratio Calculator slug: labour-to-sales Legal & Client Matter Profitability Calculator slug: matter-profitability