What is the standard length of a rebar?

Rebar is typically manufactured in 12-metre (approx. 40-foot) lengths.

If you want full estimate for a master project?

If you want full estimate including weight and tonnage → [Steel Reinforcement Master](/steel-reinforcement-calculator/)

Why subtract bend deduction?

When steel is bent, its outer length increases. To get the correct final shape, we must subtract a small amount (2d for 90°) from the cut piece.

If you want full estimate for BBS?

If you want full estimate for the entire bar bending schedule → [BBS Calculator](/bar-bending-schedule-calculator/)

What is a stirrup hook length?

Standard hook length for stirrups is 10d to 12d at each end (total 20-24d) to ensure the ring stays closed during earthquakes.

If you want full estimate for columns?

If you want full estimate for column reinforcement → [Steel Quantity for Column](/steel-quantity-for-column/)

Why do we add 1 to the result?

Dividing length by spacing gives the number of "spaces". We need an additional bar at the very start to enclose those spaces.

Steel Master Rebar Length Cutting Length Stirrup Weight Rebar Spacing Development Length Lap Length Hook & Crank Slab Steel Beam Steel Column Steel Footing Steel BBS Steel Cost Steel Density

Quality Inspector

Steel & Rebar

Steel Weight & Rebar Calculator (Reinforcement Estimator Nepal)

Expert Guide

Quickly find the total weight of rebar by entering the diameter (mm) and the total length. Uses the standard D²/162.2 formula.

Steel rods and rebar being tied by worker on construction site

⚡ Quick Answer

To find the weight of a steel bar, use the formula D²/162.2. For example, a 12mm bar weighs 0.888 kg per metre. A standard 12m long 12mm bar weighs 10.66 kg.

🛠️ How It Works

The unit weight of steel is calculated using the formula D²/162.2. Total weight is Unit Weight × Length × Quantity. Now calculate it here → Steel Bar Weight Calculator

Enter the diameter of the TMT bar in millimetres (e.g., 8mm, 12mm, 16mm).
Input the total length of the bar or the total running length of all bars required.
Specify the quantity of bars if you are calculating for multiple pieces of the same length.
The tool automatically calculates the unit weight (kg/m) and the total tonnage.
Use the result for procurement and budgeting with your local steel supplier in Nepal.

📐 Calculation Formula

Unit Weight (kg/m) = D² / 162.2

Total Weight = Unit Weight × Length × Quantity

📋 Real-Life Example

For 10 bars of 12mm rebar, each 12m long:
• Unit Weight = (12 × 12) / 162.2 = 0.888 kg/m
• Total Weight = 0.888 × 12 × 10 = 106.56 kg

⚠️ Common Mistakes to Avoid

Using the wrong conversion factor for local units. Most people forget this → Binding Wire Estimator

❓ Frequently Asked Questions

What are the standard steel grades in Nepal?

Fe500 and Fe500D are the most common grades used in Nepal. Premium brands like Jagadamba, Panchakanya, and Ambe provide these TMT bars.

What is the formula for steel weight?

The standard formula is D²/162.2 where D is the diameter in millimetres. This gives the weight in kilograms per metre.

If you want full estimate for a project?

If you want full estimate including Bending Schedule → [BBS Calculator](/rebar-cutting-length-calculator/)