Tool categoryRecently expanded
Trade & Construction Calculators
Reference tables and job-site math for tradespeople — material quantities, thread and wire specs, and construction estimates.
Tools
Trade & Construction Calculators
Featured guides in this category — tools with a deeper how-to-use writeup
AC Sizing Calculator Trade & Construction Calculators Open Addition Cost per Square Foot Estimator Trade & Construction Calculators Open Air Compressor CFM Calculator Trade & Construction Calculators Open Amps to Watts Calculator Trade & Construction Calculators Open Auto Paint Coverage Calculator Trade & Construction Calculators Open Backsplash Tile Calculator Trade & Construction Calculators Open Basement Finishing Cost Estimator Trade & Construction Calculators Open Bathroom Remodel Cost Estimator Trade & Construction Calculators Open Battery Charge Time Calculator Trade & Construction Calculators Open Battery Runtime Calculator Trade & Construction Calculators Open Beam Span Calculator Trade & Construction Calculators Open Belt Length Calculator Trade & Construction Calculators Open Boiler Sizing Calculator Trade & Construction Calculators Open Bolt Torque Calculator Trade & Construction Calculators Open Brick Coverage Calculator Trade & Construction Calculators Open Cable Pull Tension Calculator Trade & Construction Calculators Open Car Battery Group Size Reference Search BCI car battery group sizes by dimensions terminal layout and common vehicle fit. Open Carpet Coverage Calculator Trade & Construction Calculators Open Chain Link Fence Calculator Trade & Construction Calculators Open CMU Block Calculator Trade & Construction Calculators Open Compost Coverage Calculator Trade & Construction Calculators Open Concrete Block Wall Calculator Trade & Construction Calculators Open Concrete Calculator Estimate concrete volume bags and waste allowance for slabs footings and pours. Open Concrete Column Calculator Trade & Construction Calculators Open Concrete Curb Calculator Trade & Construction Calculators Open Concrete Footing Calculator Trade & Construction Calculators Open Concrete Slab Calculator Trade & Construction Calculators Open Concrete Stairs Calculator Trade & Construction Calculators Open Conduit Bender Helper Trade & Construction Calculators Open Deck Board Calculator Trade & Construction Calculators Open Deck Footing Depth Calculator Trade & Construction Calculators Open Deck Joist Spacing Calculator Trade & Construction Calculators Open Door Replacement Cost Estimator Trade & Construction Calculators Open Downspout Sizing Calculator Trade & Construction Calculators Open Drain Pipe Slope Calculator Trade & Construction Calculators Open Drill Bit Size Chart Search fractional number letter and metric drill bit sizes with decimal-inch equivalents. Open Driveway Asphalt Calculator Trade & Construction Calculators Open Driveway Gravel Calculator Trade & Construction Calculators Open Drywall Mud & Tape Calculator Trade & Construction Calculators Open Drywall Sheet Calculator Trade & Construction Calculators Open Duct Size Calculator Trade & Construction Calculators Open Electrical Breaker Sizing Calculator Trade & Construction Calculators Open Electrical Conduit Fill Calculator Trade & Construction Calculators Open Electrical Service Load Calculator Trade & Construction Calculators Open Electrical Voltage Drop Calculator Trade & Construction Calculators Open Electrical Wire Size Calculator Trade & Construction Calculators Open EV Charger Load Calculator Trade & Construction Calculators Open Fence Materials Calculator (Vinyl) Trade & Construction Calculators Open Fence Materials Calculator (Wood) Trade & Construction Calculators Open Fence Post Spacing Calculator Trade & Construction Calculators Open Fertilizer Application Calculator Trade & Construction Calculators Open Foot-Candle to Lux Converter Trade & Construction Calculators Open Forklift Classification Reference Search forklift classes I through VII by power type capacity range and operating environment. Open Furnace Sizing Calculator Trade & Construction Calculators Open Garage Build Cost Estimator Trade & Construction Calculators Open Garden Mulch Coverage Calculator Trade & Construction Calculators Open Garden Soil Calculator Trade & Construction Calculators Open Gear Ratio Calculator Trade & Construction Calculators Open Generator Size Calculator Estimate generator kW kVA amps horsepower and wattage with power factor and voltage inputs. Open Generator Sizing Calculator Trade & Construction Calculators Open Grass Seed Coverage Calculator Trade & Construction Calculators Open Gravel Coverage Calculator Trade & Construction Calculators Open Gutter Length Calculator Trade & Construction Calculators Open Hardwood Flooring Calculator Trade & Construction Calculators Open Header Span Calculator Trade & Construction Calculators Open Heat Pump Sizing Calculator Trade & Construction Calculators Open Hot Tub Volume Calculator Trade & Construction Calculators Open HVAC BTU Sizing Calculator (Room) Trade & Construction Calculators Open HVAC Filter Size Reference Compare nominal and actual HVAC filter dimensions for common residential filter sizes. Open HVAC Refrigerant Reference Look up common HVAC refrigerants by chemical class GWP safety class and application. Open HVAC Tonnage Calculator Trade & Construction Calculators Open Hydronic Radiator Sizing Calculator Trade & Construction Calculators Open Insulation Coverage Calculator (Batt) Trade & Construction Calculators Open Insulation Coverage Calculator (Blown-In) Trade & Construction Calculators Open Insulation R-Value Calculator Trade & Construction Calculators Open Irrigation Pipe Sizing Calculator Trade & Construction Calculators Open Joist Span Calculator Trade & Construction Calculators Open Kitchen Remodel Cost Estimator Trade & Construction Calculators Open Laminate Flooring Calculator Trade & Construction Calculators Open Lap Siding Calculator Trade & Construction Calculators Open Lawn Lime Calculator Trade & Construction Calculators Open Lumber Board Foot Calculator Trade & Construction Calculators Open Lumber Linear Foot Calculator Trade & Construction Calculators Open Lumen Calculator (Room Lighting) Trade & Construction Calculators Open Lux to Lumens Converter Trade & Construction Calculators Open Mini-Split Sizing Calculator Trade & Construction Calculators Open Mortar Bag Calculator Trade & Construction Calculators Open Motor HP to Amps Calculator Trade & Construction Calculators Open Mulch Bag Calculator Trade & Construction Calculators Open New Roof Cost Estimator Trade & Construction Calculators Open Ohm's Law Calculator Trade & Construction Calculators Open Paint Calculator Estimate paint coverage coats gallons and waste allowance for walls or rooms. Open Paint Coverage Calculator (Ceiling) Trade & Construction Calculators Open Paint Coverage Calculator (Exterior) Trade & Construction Calculators Open Paint Coverage Calculator (Interior Walls) Trade & Construction Calculators Open Paver Coverage Calculator Trade & Construction Calculators Open Pea Gravel Calculator Trade & Construction Calculators Open Pipe Friction Loss Calculator Trade & Construction Calculators Open Pipe Thread Lookup Trade & Construction Calculators Open Pipe Volume Calculator Trade & Construction Calculators Open Plywood Sheet Calculator Trade & Construction Calculators Open Pool Chlorine Calculator Trade & Construction Calculators Open Pool Liner Calculator Trade & Construction Calculators Open Pool Salt Calculator Trade & Construction Calculators Open Pool Volume Calculator Trade & Construction Calculators Open Power Factor Calculator Trade & Construction Calculators Open Pulley Speed Calculator Trade & Construction Calculators Open Pump Head Calculator Trade & Construction Calculators Open Rafter Length Calculator Trade & Construction Calculators Open Rain Garden Sizing Calculator Trade & Construction Calculators Open Rebar Spacing Calculator Trade & Construction Calculators Open Recessed Light Spacing Calculator Trade & Construction Calculators Open Refrigerant Charge Calculator Trade & Construction Calculators Open Retaining Wall Block Calculator Trade & Construction Calculators Open Roof Area Calculator Trade & Construction Calculators Open Roof Drip Edge Calculator Trade & Construction Calculators Open Roof Pitch Calculator Trade & Construction Calculators Open Roof Underlayment Calculator Trade & Construction Calculators Open Roofing Shingle Bundle Calculator Trade & Construction Calculators Open Router Bit Profile Reference Search common router bit profiles by cut type shape and typical woodworking use. Open Sand Coverage Calculator Trade & Construction Calculators Open Screw and Bolt Thread Size Reference Look up UNC UNF and metric screw and bolt thread sizes with diameter and pitch details. Open Septic Tank Sizing Calculator Trade & Construction Calculators Open Sheet Metal Bend Allowance Calculator Trade & Construction Calculators Open Siding Square Footage Calculator Trade & Construction Calculators Open Sod Coverage Calculator Trade & Construction Calculators Open Solar Battery Bank Calculator Trade & Construction Calculators Open Solar Inverter Sizing Calculator Trade & Construction Calculators Open Solar Panel Sizing Calculator Trade & Construction Calculators Open Solar Panel Specs Reference Compare typical solar panel wattage classes by size cell type efficiency voltage and current. Open Spark Plug Cross-Reference Chart Reference common spark plug thread sizes and major-brand heat range numbering conventions. Open Sprinkler Coverage Calculator Trade & Construction Calculators Open Stair Calculator Calculate stair riser count tread depth total run and code-friendly stair dimensions. Open Stair Riser & Tread Calculator Trade & Construction Calculators Open Stair Stringer Calculator Trade & Construction Calculators Open Static Pressure Calculator (HVAC) Trade & Construction Calculators Open Stone Coverage Calculator Trade & Construction Calculators Open Sump Pump Sizing Calculator Trade & Construction Calculators Open Tankless Water Heater Sizing Calculator Trade & Construction Calculators Open Tap Drill Size Lookup Trade & Construction Calculators Open Thread Pitch Calculator Trade & Construction Calculators Open Three-Phase Power Calculator Trade & Construction Calculators Open Tile Calculator Estimate tile quantity area waste allowance and box counts for floors or walls. Open Tile Coverage Calculator (Floor) Trade & Construction Calculators Open Tile Coverage Calculator (Wall) Trade & Construction Calculators Open Tile Grout Calculator Trade & Construction Calculators Open Topsoil Calculator Trade & Construction Calculators Open Transformer kVA Calculator Trade & Construction Calculators Open Truss Span Calculator Trade & Construction Calculators Open Underlayment Calculator Trade & Construction Calculators Open Vinyl Plank Flooring Calculator Trade & Construction Calculators Open Vinyl Siding Calculator Trade & Construction Calculators Open Volts × Amps × Watts Calculator Trade & Construction Calculators Open Water Heater Sizing Calculator (Tank) Trade & Construction Calculators Open Water Pipe Size Calculator Trade & Construction Calculators Open Watts to Amps Calculator Trade & Construction Calculators Open Welding Heat Input Calculator Trade & Construction Calculators Open Welding Rod Consumption Calculator Trade & Construction Calculators Open Welding Rod Selection Chart Choose common SMAW MIG and TIG filler options by base metal joint type and position. Open Well Pump Sizing Calculator Trade & Construction Calculators Open Whole-House Repaint Cost Estimator Trade & Construction Calculators Open Window Replacement Cost Estimator Trade & Construction Calculators Open Wrench Size to Bolt Size Lookup Trade & Construction Calculators Open