鋼棒重量計算機
計算する 鋼棒の重量丸棒、角棒、平棒、六角棒に対応。形状を選択し、寸法と長さを入力すると、1本あたり、1メートルあたり、および注文全体の重量が算出されます。
棒鋼重量
寸法と密度から算出された公称重量です。実際の重量はミル公差やコーティングにより異なります — 重要な用途ではミル試験証明書をご確認ください。
丸鋼棒の重量
| 直径 | kg/m | lb/ft |
|---|---|---|
| 6 mm | 0.222 | 0.149 |
| 8 mm | 0.395 | 0.265 |
| 10 mm | 0.617 | 0.414 |
| 12 mm | 0.888 | 0.597 |
| 16 mm | 1.578 | 1.061 |
| 20 mm | 2.466 | 1.657 |
| 25 mm | 3.853 | 2.589 |
| 30 mm | 5.549 | 3.728 |
| 40 mm | 9.864 | 6.628 |
| 50 mm | 15.413 | 10.357 |
| 60 mm | 22.194 | 14.914 |
| 80 mm | 39.456 | 26.513 |
| 100 mm | 61.650 | 41.427 |
丸鋼棒の簡易計算式: kg/m = d² × 0.006165 (dはmm)。角棒は a² × 0.00785、平棒は w × t × 0.00785.
よくある質問
直径20mmの丸鋼棒の重量は？
約2.47 kg/m (1.66 lb/ft) です。
角棒の重量はどう計算しますか？
辺の長さの二乗に長さと密度を掛けます。簡易式では、kg/m = 辺の長さ(mm)の二乗 × 0.00785 です。
六角棒の「対辺距離」とは？
向かい合う2つの平行な面の間の距離です。断面積は 0.866 × AF² で計算します。
Steel Bar Weight Calculator
Calculate the weight of steel bars and rebar for construction projects. Quickly determine weights for round, square, flat, and deformed reinforcement bars.
Weight Calculation Results
How to Use This Steel Bar Weight Calculator
Understanding Steel Bar Weight Calculation
Accurate weight calculation of steel bars is essential for construction projects, fabrication, and material estimation. The weight of steel bars depends on:
- Dimensions: The cross-sectional shape and dimensions of the bar
- Length: The linear measurement of each bar
- Material Density: The specific weight of the steel alloy used
- Quantity: The number of identical bars needed
This calculator helps you determine both individual bar weights and total weight for your required quantity, making material ordering and cost estimation more accurate.
Step-by-Step Instructions
- Select Bar Type: Choose the cross-sectional shape (round, square, flat, or rebar).
- Enter Dimensions: Provide the bar's dimensions based on the selected type.
- Specify Length: Enter the length of each individual bar.
- Input Quantity: Enter the number of bars needed.
- Choose Material: Select the steel type or enter a custom density.
- Click "Calculate Weight" to get your results.
Weight Calculation Formulas
The calculator uses the following formulas to determine weight:
- Round Bar: Weight = π × (Diameter/2)² × Length × Density
- Square Bar: Weight = Width² × Length × Density
- Flat Bar: Weight = Width × Height × Length × Density
- Rebar: Uses standard diameters for reinforcement bars with the round bar formula
Where weight is calculated in kilograms, dimensions in meters, and density in kg/m³.
Tips for Accurate Results
- Double-check all dimensions and ensure consistent units when entering values.
- For deformed rebar, the nominal diameter is used in calculations, which may give a slight overestimation as it doesn't account for deformations.
- When ordering materials, consider adding a waste allowance (typically 5-10%) to your calculated weights.
- Verify the material density if you're working with specialty steel alloys.
Common Steel Bar Applications
- Rebar: Reinforcement in concrete structures, foundations, columns, beams
- Round Bars: Shafts, axles, pins, supports
- Square Bars: Structural elements, frames, grids
- Flat Bars: Brackets, supports, braces, trim
Knowing the weight helps in structural design, transportation planning, and cost estimation for your projects.
Common Rebar Properties
| Size | Nominal Diameter | Cross-sectional Area | Weight per Meter | Weight per Foot |
|---|---|---|---|---|
| #3 (3/8″) | 9.5 mm | 71 mm² | 0.56 kg/m | 0.376 lb/ft |
| #4 (1/2″) | 12.7 mm | 129 mm² | 1.00 kg/m | 0.668 lb/ft |
| #5 (5/8″) | 15.9 mm | 199 mm² | 1.56 kg/m | 1.043 lb/ft |
| #6 (3/4″) | 19.1 mm | 284 mm² | 2.24 kg/m | 1.502 lb/ft |
| #7 (7/8″) | 22.2 mm | 387 mm² | 3.04 kg/m | 2.044 lb/ft |
| #8 (1″) | 25.4 mm | 510 mm² | 4.00 kg/m | 2.670 lb/ft |
| #9 (1-1/8″) | 28.7 mm | 645 mm² | 5.06 kg/m | 3.400 lb/ft |
| #10 (1-1/4″) | 32.3 mm | 819 mm² | 6.40 kg/m | 4.303 lb/ft |
| #11 (1-3/8″) | 34.9 mm | 956 mm² | 7.50 kg/m | 5.313 lb/ft |
| 8 mm | 8.0 mm | 50.3 mm² | 0.395 kg/m | 0.266 lb/ft |
| 10 mm | 10.0 mm | 78.5 mm² | 0.617 kg/m | 0.415 lb/ft |
| 12 mm | 12.0 mm | 113.1 mm² | 0.888 kg/m | 0.596 lb/ft |
| 16 mm | 16.0 mm | 201.1 mm² | 1.578 kg/m | 1.061 lb/ft |
| 20 mm | 20.0 mm | 314.2 mm² | 2.466 kg/m | 1.657 lb/ft |
| 25 mm | 25.0 mm | 490.9 mm² | 3.853 kg/m | 2.589 lb/ft |
| 32 mm | 32.0 mm | 804.2 mm² | 6.313 kg/m | 4.243 lb/ft |