Practical Calculators, Visual Layouts and Printable Templates
Calculate dimensions, compare layouts and generate full-size templates. The tools are free to use, require no account, and keep calculator inputs in your browser.
Popular Tools
View all →Room Mode Calculator
Enumerate axial, tangential and oblique room resonances and inspect close low-frequency clusters.
Projector Throw Distance
Calculate lens-to-screen distance, throw ratio or screen diagonal with a scaled optical diagram.
TV Size Calculator
Find a TV diagonal from viewing distance and angle, then compare three screen sizes in a to-scale room view.
Wheel Offset Calculator
Compare a current and proposed wheel/tyre setup and see exactly how the geometry changes.
Tire Size Calculator
Compare two tyre sizes side by side - diameter, sidewall, circumference and speedometer effect.
Print to Scale
Upload an image, set one measured dimension, and prepare a full-size tiled PDF with a calibration check.
Pipe Notch Template
Generate a full-size fishmouth or saddle template for the theoretical intersection between two tubes.
Drill Hole Template
Lay out custom rows of drill holes with exact spacing and download a printable template.
Browse by Category
Fabric Crafts
Quilting yardage, cutting and sewing patterns
4 toolsHome Theater & AV
Screens, projectors, speakers and rooms
37 toolsAutomotive
Wheels, tires, gearing and clearance
7 toolsPrint & Scale
Full-size printing, DPI and paper scaling
7 toolsWorkshop
Drilling, notching and marking templates
8 toolsFabrication
Bend calculations and flat patterns
22 toolsWoodworking
Cut lists, joinery and board measure
17 toolsConstruction
Stairs, roofs, layouts and materials
18 toolsPackaging
Carton, label and roll calculations
4 toolsLogistics
CBM, pallets, containers and freight
6 toolsContractor Business
Loaded labor rates, crew cost and bid pricing
7 toolsLayout & Planning
Spacing, pictures, tables and wall layouts
4 toolsOff-Grid & DC Power
Solar, battery and 12V/24V/48V wiring
2 toolsFit & Clearance
Openings, appliance clearance and moving routes
3 toolsWhat you get
Recently Added
Quilt Backing
Compare vertical and horizontal backing-panel layouts, yardage or metres, seams and waste from your quilt and usable fabric width.
Quilt Binding
Calculate perimeter, WOF strip count and fabric to buy from your quilt size, cut-strip width and joining allowance.
HST Calculator
Find exact source-square counts, trim-friendly cutting size and batch instructions for two-, four- or eight-at-a-time HSTs.
Circle Skirt Pattern
Draft full-, half- or quarter-circle skirt geometry with explicit waist and hem allowances, then download a calibrated tiled pattern.
UPS Runtime
Estimate runtime from total battery-pack capacity and measured rack load, while checking both UPS watt and VA ratings.
Seating Sightlines
Estimate the row heights needed for each sightline to clear an assumed head height in the row ahead.
ToolHuts combines calculations with diagrams, layouts and printable templates. Compare wheel position, lay out evenly spaced parts, plan cuts, estimate materials, or print a drilling template at full size.
Calculator inputs and uploaded working files are processed in your browser. Each tool shows its method and identifies the assumptions you still need to verify, such as vehicle clearance, local building rules, carrier charges or material tolerances.