Steel Coil Calculator Pro
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About this app
Steel Coil Calculator is a professional tool built for engineers, fabricators, service centers, and anyone who works with flat rolled steel. Get fast, accurate results for 7 essential calculations — all offline, all in one app.
━━ 7 CALCULATORS IN ONE APP ━━
🔩 Coil Weight
Calculate coil weight from OD, ID, and width. Supports carbon steel, stainless steel, aluminum, and custom density values.
📏 Coil Lineal Feet
Convert coil weight to strip length instantly. Enter thickness, width, and weight to get feet or meters.
⭕ Maximum Coil OD
Reverse-calculate outside diameter from coil weight. Essential for coil winding and storage planning.
⚖️ Pounds Per Inch of Width (PIW)
Quickly determine weight per inch of coil width for purchasing and shipping calculations.
📐 Flat Sheet Weight
Calculate the weight of any flat sheet by thickness, width, and length. Ideal for cut-to-length operations.
↔️ Coil Feet to Weight
Enter strip dimensions and length to calculate total coil weight. The inverse of Lineal Feet.
📦 Base Box Calculations
Convert between base boxes and tons in both directions. Supports standard 55, 65, 75, and 85 lb/BB with custom entry.
━━ KEY FEATURES ━━
✅ Works 100% offline — no internet required after install
✅ English (Imperial) and Metric — switch instantly
✅ Carbon steel, stainless, aluminum, and custom material density
✅ Dark and light theme — designed for shop floor and office use
✅ Enter key triggers calculation — keyboard-friendly workflow
✅ Input validation — catches common entry errors automatically
✅ Formula shown for every calculator — full transparency
✅ Fast, lightweight — loads in under a second
━━ WHO USES THIS APP ━━
• Steel service centers and distributors
• Sheet metal fabricators and stamping shops
• Coil processing and slitting operations
• Mechanical and manufacturing engineers
• Procurement and purchasing teams
• Warehouse and inventory managers
• Steel traders and brokers
━━ SUPPORTED MATERIALS ━━
• Carbon / mild steel (0.2833 lb/in³ | 7.85 g/cm³)
• Stainless steel (0.2600 lb/in³ | 8.00 g/cm³)
• Aluminum (0.0975 lb/in³ | 2.70 g/cm³)
• Custom — enter any density value
━━ DESIGNED FOR REAL INDUSTRIAL USE ━━
Every formula follows standard steel industry engineering practice. Results match published values from US Steel, Steel Technologies, and major service center reference tables.
This is the updated and expanded version of the original Steel Coil Calculator (10,000+ downloads, 4.7★) — now with 7 calculators, dual unit system, theme switching, and full offline support.
Calculator results are for estimation purposes. Verify critical dimensions independently before use.
━━ 7 CALCULATORS IN ONE APP ━━
🔩 Coil Weight
Calculate coil weight from OD, ID, and width. Supports carbon steel, stainless steel, aluminum, and custom density values.
📏 Coil Lineal Feet
Convert coil weight to strip length instantly. Enter thickness, width, and weight to get feet or meters.
⭕ Maximum Coil OD
Reverse-calculate outside diameter from coil weight. Essential for coil winding and storage planning.
⚖️ Pounds Per Inch of Width (PIW)
Quickly determine weight per inch of coil width for purchasing and shipping calculations.
📐 Flat Sheet Weight
Calculate the weight of any flat sheet by thickness, width, and length. Ideal for cut-to-length operations.
↔️ Coil Feet to Weight
Enter strip dimensions and length to calculate total coil weight. The inverse of Lineal Feet.
📦 Base Box Calculations
Convert between base boxes and tons in both directions. Supports standard 55, 65, 75, and 85 lb/BB with custom entry.
━━ KEY FEATURES ━━
✅ Works 100% offline — no internet required after install
✅ English (Imperial) and Metric — switch instantly
✅ Carbon steel, stainless, aluminum, and custom material density
✅ Dark and light theme — designed for shop floor and office use
✅ Enter key triggers calculation — keyboard-friendly workflow
✅ Input validation — catches common entry errors automatically
✅ Formula shown for every calculator — full transparency
✅ Fast, lightweight — loads in under a second
━━ WHO USES THIS APP ━━
• Steel service centers and distributors
• Sheet metal fabricators and stamping shops
• Coil processing and slitting operations
• Mechanical and manufacturing engineers
• Procurement and purchasing teams
• Warehouse and inventory managers
• Steel traders and brokers
━━ SUPPORTED MATERIALS ━━
• Carbon / mild steel (0.2833 lb/in³ | 7.85 g/cm³)
• Stainless steel (0.2600 lb/in³ | 8.00 g/cm³)
• Aluminum (0.0975 lb/in³ | 2.70 g/cm³)
• Custom — enter any density value
━━ DESIGNED FOR REAL INDUSTRIAL USE ━━
Every formula follows standard steel industry engineering practice. Results match published values from US Steel, Steel Technologies, and major service center reference tables.
This is the updated and expanded version of the original Steel Coil Calculator (10,000+ downloads, 4.7★) — now with 7 calculators, dual unit system, theme switching, and full offline support.
Calculator results are for estimation purposes. Verify critical dimensions independently before use.
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What’s new
✦ Steel Coil Calculator - 7 Tools in One App : Coil Weight, Lineal Feet, Max OD, Sheet Weight, Feet→Weight, PIW, and Base Box
✦ Reverse OD calculation — find OD from weight (most requested feature)
✦ Full Metric support — mm, kg, m alongside Imperial
✦ Dark & Light theme
✦ Custom material density input
✦ Fully offline — no internet needed
✦ Improved accuracy and input validation
✦ Reverse OD calculation — find OD from weight (most requested feature)
✦ Full Metric support — mm, kg, m alongside Imperial
✦ Dark & Light theme
✦ Custom material density input
✦ Fully offline — no internet needed
✦ Improved accuracy and input validation
