Browse every calculator.
Explore the full ViSitemap directory of calculators for materials, measurements, interiors, sitework, roofing, pools, and property planning.
Conversion Calculators
12 tools- 01Conversions
Weight Converter
Convert kilograms, pounds, ounces, grams, stone, and tons in one practical tool.
Open tool - 02Conversions
Knots to mph Converter
Convert knots into miles per hour, km/h, m/s, and ft/s with nautical speed context.
Open tool - 03Conversions
Millimeters to Inches Converter
Convert millimeters into inches with decimal and practical fractional inch output.
Open tool - 04Conversions
Linear Feet to Square Feet Converter
Convert linear feet into square feet by adding the width needed for a true area calculation.
Open tool - 05Conversions
Cubic Feet to Cubic Yards Converter
Convert cubic feet into cubic yards with practical supporting outputs for bulk material planning.
Open tool - 06Conversions
mg to mL Calculator
Convert milligrams to milliliters using a known liquid concentration in mg/mL or mg per 5 mL.
Open tool - 07Conversions
mcg to mg Converter
Convert micrograms to milligrams, grams, and kilograms with a direct metric mass conversion.
Open tool - 08Conversions
kg to Gallons Converter
Convert kilograms to US or imperial gallons using liquid density presets or a custom kg/L value.
Open tool - 09Conversions
Quarts to Pounds Converter
Convert quarts to pounds using density-based material presets or a custom pounds-per-quart value.
Open tool - 10Conversions
Gallons to Ounces Converter
Convert US or imperial gallons to fluid ounces, cups, pints, quarts, liters, and milliliters.
Open tool - 11Conversions
Feet to Inches Calculator
Convert decimal feet or mixed feet-and-inches values into inches and metric equivalents.
Open tool - 12Conversions
Inches to Fraction Calculator
Convert decimal inches into common tape-measure fractions with selectable rounding precision.
Open tool
Electrical Calculators
12 tools- 01Electrical
Wire Size Calculator
Estimate minimum wire gauge from amp load, run length, conductor material, and voltage drop.
Open tool - 02Electrical
Conduit Fill Calculator
Check raceway fill by conduit type, trade size, conductor insulation, and conductor count.
Open tool - 03Electrical
Generator Size Calculator
Estimate generator size from running load, startup surge, phase, voltage, and extra headroom.
Open tool - 04Electrical
Battery Charge Time Calculator
Estimate recharge time from battery capacity, charger current, chemistry, efficiency, and taper allowance.
Open tool - 05Electrical
Battery Backup Calculator
Estimate battery runtime or size a practical battery bank from load watts, voltage, amp-hours, inverter efficiency, and usable discharge assumptions.
Open tool - 06Electrical
Ohm's Law Calculator
Calculate voltage, current, resistance, and power from common Ohm's law input pairs.
Open tool - 07Electrical
Parallel Resistor Calculator
Calculate equivalent resistance for parallel resistor networks and optional branch current and power.
Open tool - 08Electrical
Power Factor Calculator
Calculate power factor, kW, kVA, kVAR, phase angle, and estimated current from practical electrical inputs.
Open tool - 09Electrical
Voltage Divider Calculator
Calculate ideal and loaded divider output voltage, current, and resistor power from practical resistor-divider inputs.
Open tool - 10Electrical
Wire Ampacity Calculator
Calculate base and adjusted wire ampacity from conductor size, material, insulation rating, ambient temperature, and conductor count.
Open tool - 11Electrical
Voltage Drop Calculator
Calculate voltage drop, delivered voltage, and percent loss for copper and aluminum wire runs.
Open tool - 12Electrical
Box Fill Calculator
Check electrical box fill from conductor counts, wire gauge, device yokes, grounds, clamps, fittings, and box volume.
Open tool
Exterior Project Calculators
14 tools- 01Exterior
Mulch Calculator
Estimate mulch volume, cubic yards, liters, and bag count for beds, borders, and landscape areas.
Open tool - 02Exterior
Topsoil Calculator
Estimate topsoil volume, cubic yards, weight, and truckload context for grading, lawns, and planting areas.
Open tool - 03Exterior
River Rock Calculator
Estimate river rock coverage, cubic yards, tons, and bag count for decorative landscape beds and borders.
Open tool - 04Exterior
Crushed Stone Calculator
Estimate crushed stone volume, cubic yards, and tons for driveways, base layers, and sitework.
Open tool - 05Exterior
Fencing Calculator
Estimate panels, posts, rails, and spacing for fence runs.
Open tool - 06Exterior
Vinyl Fence Calculator
Estimate vinyl fence sections, posts, rails, gate deductions, and concrete bags for practical residential fence layouts.
Open tool - 07Exterior
Deck Stain Calculator
Estimate deck stain coverage for boards, railings, stairs, and multiple coats.
Open tool - 08Exterior
Decking Calculator
Estimate deck board rows, lineal footage, stock board count, and screw quantity from deck size and board layout.
Open tool - 09Exterior
Siding Calculator
Estimate siding area, openings deductions, gables, and box or bundle counts with waste.
Open tool - 10Exterior
Paver Calculator
Estimate paver count, bedding sand, base material, and edge restraint for hardscapes.
Open tool - 11Exterior
Sod Calculator
Estimate sod area, pallets, rolls, and topsoil for lawn installation with waste allowance.
Open tool - 12Exterior
Potting Soil Calculator
Estimate potting soil volume and bag count for planters, pots, grow bags, and raised beds.
Open tool - 13Exterior
Pond Calculator
Estimate pond volume, liner size, excavation, edging length, and pump flow for garden and koi ponds.
Open tool - 14Exterior
Baluster Calculator
Calculate baluster count, equalized spacing, center marks, and waste for deck and porch railings.
Open tool
Finish Calculators
4 tools- 01Finishes
Paint Calculator
Estimate paint needed by room size, coats, and surface coverage.
Open tool - 02Finishes
Wallpaper Calculator
Estimate rolls and repeat allowances for wallpapered spaces.
Open tool - 03Finishes
Board and Batten Calculator
Estimate board count, batten count, lineal footage, wall coverage, and paintable area for board and batten layouts.
Open tool - 04Finishes
Epoxy Resin Calculator
Estimate epoxy volume for pours and coatings, including Part A and Part B mix amounts.
Open tool
HVAC Calculators
6 tools- 01HVAC
HVAC Load Calculator
Estimate heating and cooling load in BTU per hour from room size, climate, insulation, air tightness, windows, and internal heat factors.
Open tool - 02HVAC
Furnace Size Calculator
Estimate heating BTU and suggested furnace size using area, climate, insulation, and efficiency.
Open tool - 03HVAC
BTU Calculator
Estimate room cooling BTU per hour using room size, climate, insulation, sun exposure, occupants, and windows.
Open tool - 04HVAC
Tonnage Calculator
Convert BTU per hour to cooling tons, convert tons to BTU, or estimate AC tonnage from area and room conditions.
Open tool - 05HVAC
CFM Calculator
Calculate airflow in CFM from room volume and air changes or from duct size and air velocity.
Open tool - 06HVAC
Duct Size Calculator
Size round or rectangular HVAC ducts from airflow and target velocity, or check velocity in an existing duct.
Open tool
Interior Calculators
6 tools- 01Interiors
Flooring Calculator
Measure floor area and material quantities for tile, wood, or vinyl installs.
Open tool - 02Interiors
Tile Calculator
Calculate tile counts, carton quantities, and coverage for floors and walls.
Open tool - 03Interiors
Drywall Calculator
Estimate drywall sheet count and coverage for walls, ceilings, and room layouts.
Open tool - 04Interiors
Carpet Calculator
Estimate carpet purchase area, roll usage, seams, and linear footage for room layouts.
Open tool - 05Interiors
Thinset Calculator
Estimate thinset mortar bags for tile installs using area, trowel coverage, waste, and back-buttering allowance.
Open tool - 06Interiors
Grout Calculator
Estimate grout bags for tile installs using area, tile size, joint width, joint depth, grout type, and waste.
Open tool
Lumber Calculators
6 tools- 01Lumber
Board Foot Calculator
Calculate board feet, lumber volume, and lineal totals for hardwood and framing stock.
Open tool - 02Lumber
Lumber Calculator
Plan lumber quantities for framing, decking, and structural layouts.
Open tool - 03Lumber
Log Weight Calculator
Estimate log weight, wood volume, and board-foot context from log size, species, and moisture state.
Open tool - 04Lumber
Plywood Calculator
Estimate plywood sheet counts for floor and wall sheathing with waste allowance.
Open tool - 05Lumber
Framing Calculator
Estimate wall studs, plates, headers, opening framing, sheathing sheets, and waste allowance.
Open tool - 06Lumber
Floor Joist Calculator
Estimate floor joist count, joist lineal footage, blocking, rim length, stock pieces, and subfloor sheets.
Open tool
Masonry Calculators
3 tools- 01Masonry
Brick Calculator
Calculate brick counts, net wall area, and mortar volume for masonry walls.
Open tool - 02Masonry
Concrete Block Calculator
Estimate CMU block count, courses, mortar volume, and grout fill for concrete block walls.
Open tool - 03Masonry
Mortar Calculator
Estimate wet and dry mortar volume plus premix bag count for masonry walls.
Open tool
Measurement Calculators
19 tools- 01Measurements
Room Size Calculator
Measure room dimensions, usable area, and layout planning totals.
Open tool - 02Measurements
Pipe Weight Calculator
Estimate pipe weight per foot, per meter, per piece, and total load from actual section dimensions and material type.
Open tool - 03Measurements
Acreage Calculator
Convert land area into acres, hectares, square feet, square meters, and other practical parcel-size units.
Open tool - 04Measurements
Arch Calculator
Solve circular arch geometry from span, rise, and radius with arc length and segment area outputs.
Open tool - 05Measurements
Ramp Calculator
Calculate ramp run, slope ratio, angle, ramp length, and simple landing footprint from rise and slope inputs.
Open tool - 06Measurements
Rolling Offset Calculator
Calculate true offset, travel, advance, bend angle, and rolling angle for conduit, pipe, tubing, and similar layout work.
Open tool - 07Measurements
Stair Calculator
Calculate stair risers, treads, stringer length, total run, angle, and tread area for practical straight stair layouts.
Open tool - 08Measurements
Spindle Speed Calculator
Calculate spindle RPM, surface speed, and feed-per-minute context from cutter diameter, material speed, flute count, and chip load.
Open tool - 09Measurements
Square Footage Calculator
Calculate total square footage for simple and multi-room plans.
Open tool - 10Measurements
Cubic Feet Calculator
Calculate cubic feet for boxes, rooms, and cylinders with cubic yard and metric conversions.
Open tool - 11Measurements
Cubic Meter Calculator
Calculate cubic meters for boxes, rooms, and cylinders with liters and imperial conversions.
Open tool - 12Measurements
Pipe Volume Calculator
Calculate internal pipe capacity from inside diameter or outside diameter plus wall thickness.
Open tool - 13Measurements
Flow Rate Calculator
Calculate flow rate from volume and time, fill or drain time, or pipe flow from diameter and velocity.
Open tool - 14Measurements
Gallon Calculator
Estimate gallons from common tank shapes or known volume units with US and imperial gallon outputs.
Open tool - 15Measurements
Metal Weight Calculator
Estimate stock weight for plate, bar, tube, and other common metal shapes using standard or custom density.
Open tool - 16Measurements
Steel Weight Calculator
Estimate per-piece and total steel weight for plate, bar, tube, and pipe with unit-length outputs.
Open tool - 17Measurements
Cubic Yard Calculator
Calculate cubic yards for bulk materials using rectangular, circular, triangular, or area-depth measurements.
Open tool - 18Measurements
Square Yards Calculator
Convert measured area into square yards using rectangle, triangle, circle, or known-area inputs.
Open tool - 19Measurements
Tank Volume Calculator
Calculate full tank capacity and current fill volume for cylindrical, rectangular, and elliptical tanks.
Open tool
Pool Calculators
4 tools- 01Pools
Pool Volume Calculator
Calculate pool volume for rectangle, circular, and oval pools with flat or sloped depths.
Open tool - 02Pools
Pool Chlorine Calculator
Calculate chlorine dosage for liquid, granular, and tablet chlorine based on pool volume, current and target FC, CYA level, and water temperature.
Open tool - 03Pools
Pool Salt Calculator
Calculate how much salt to add to your saltwater pool based on current and target salt levels, pool volume, and fresh water dilution
Open tool - 04Pools
Pool Chemical Calculator
Calculate chemical dosages for pool maintenance based on volume, current levels, and target levels.
Open tool
Roofing Calculators
5 tools- 01Roofing
Roofing Cost Estimator
Estimate roof squares, bundles, underlayment, and material-only totals from your own pricing inputs.
Open tool - 02Roofing
Roof Pitch Calculator
Convert rise, run, span, and angle into pitch ratio, slope %, and rafter length.
Open tool - 03Roofing
Rafter Length Calculator
Calculate common rafter length, overhang tail, cut length, and roof angle from pitch and span.
Open tool - 04Roofing
Roof Shingle Calculator
Estimate roofing squares, shingle bundles, starter, ridge cap, and underlayment for simple roofs.
Open tool - 05Roofing
Roof Truss Calculator
Estimate roof truss span geometry, top chord, bottom chord, heel height, and roof area per truss bay.
Open tool
Sitework Calculators
8 tools- 01Sitework
Concrete Calculator
Work out slab, footing, and column volume for concrete pours.
Open tool - 02Sitework
Gravel Calculator
Figure out gravel volume, depth, and tonnage for paths or pads.
Open tool - 03Sitework
Road Base Calculator
Estimate road base volume, cubic yards, and tons for driveways, pads, access roads, and compacted support layers.
Open tool - 04Sitework
Sand Calculator
Estimate sand volume, weight, and bag count for bedding, fill, and site prep.
Open tool - 05Sitework
Asphalt Calculator
Estimate asphalt tonnage, compacted volume, and truckloads for driveways and paved areas.
Open tool - 06Sitework
Cubic Yards to Tons Calculator
Convert cubic yards to tons for gravel, sand, soil, asphalt, mulch, and other bulk materials.
Open tool - 07Sitework
Sonotube Calculator
Estimate concrete volume, bag counts, and yardage for round pier forms and optional belled bases.
Open tool - 08Sitework
Retaining Wall Calculator
Estimate retaining wall blocks, caps, base gravel, drainage stone, pipe, fabric, and optional geogrid.
Open tool