Construction Calculators

🏋️ Bench Press Calculator Estimate your one-rep max from any rep set, generate training percentages, or see your estimated max across different rep ranges. 💪 1RM CalculatorFrom any rep set 📊 PercentagesTraining weight chart 📈 Rep Max ChartMax for 1\u201312 reps Epley: W × (1 + R/30) | Brzycki: W × (36 ÷ (37 −

🛢️ Bitumen Calculator Calculate bitumen quantity for road surfacing, bitumen content in asphalt mix, or emulsion dilution for tack and prime coats. 🛣️ Road SurfacingPrime, tack & seal coat 🧪 Bitumen ContentIn asphalt mix design 💧 Emulsion DilutionTack coat mixing ratio Bitumen (kg) = Area (m²) × Application Rate (kg/m²) | Tons = kg ÷

🪨 Stone Calculator Calculate tons or cubic yards of crushed stone, gravel, river rock, or landscape stone for any driveway, path, or garden area. ⚖️ TonsSold by weight 📦 Cubic YardsSold by volume 🗺️ Multi-ZoneDriveway, path & beds Tons = (Area sq ft × Depth in ÷ 12) × Density (lb/cu ft) ÷ 2000 |

🧱 Drywall Calculator Calculate drywall sheets, joint compound, tape, and screws for any room or wall project — with waste factor, cost estimate, and a full materials list. 🧱 SheetsCount & cost 🪣 Mud & TapeJoint compound & tape 🔩 ScrewsFasteners & boxes Sheets = ceil(Wall Area ÷ Sheet Area × (1 + Waste%)) |

🌱 Mulch Calculator Calculate how many cubic yards or bags of mulch you need for any garden bed, yard area, or landscaping project — with cost estimate and coverage by material type. 🚛 Bulk / YardsDelivered by the yard 🛍️ BagsCount & cost from bags 🌸 Multi-BedMultiple garden beds Cu Yd = (Length ft ×

📦 Cubic Feet Calculator Calculate cubic feet for boxes and shipments, rooms and appliances, or convert cubic feet to cubic yards, gallons, liters, and more. 📦 Box / ShippingPackages, freight, storage 🏠 Room / SpaceRooms, appliances, units 🔄 Unit ConverterCu ft ↔ cu yd, gallons, liters Cu Ft = L × W × H (all

🚛 Cubic Yard Calculator Calculate cubic yards of concrete, dirt, gravel, mulch, or sand for a single area, multiple zones, or convert to bags and truckloads needed. 📐 Volume CalculatorSingle area, any material 🗺️ Multiple AreasAdd zones, running total 🛍️ Bags & TrucksConvert & estimate cost Cubic Yards = (Length ft × Width ft ×

🪜 Stair Calculator Calculate stair rise and run, stringer length and board size, or plan a staircase with a mid-landing — all checked against standard IRC residential code limits. 📐 Rise & RunSteps, riser & tread 🪵 StringerLength & board size 📋 With LandingTwo-flight staircase Steps = round(Total Rise ÷ 7″) | Riser = Total

🏠 Roof Pitch Calculator Calculate roof pitch from rise and run, find rafter length for framing, or convert between pitch ratio and degrees. 📐 Pitch CalculatorFrom rise & run 📏 Rafter LengthFor framing & cutting 🔄 Angle ↔ PitchConvert degrees & ratio Pitch = Rise ÷ Run | Angle° = atan(Rise ÷ Run) × (180/π)

🪵 Board Foot Calculator Calculate board feet for a single board, build a full lumber order with running totals, or convert between board feet and linear feet for standard nominal sizes. 📏 Single BoardQuick board feet calc 📋 Lumber ListMultiple boards, running total 🔄 BF ↔ Linear FtConvert for nominal sizes Board Feet = (Thickness