Printable Templates
Tools that prepare a full-size PDF or SVG for printing, cutting and marking out. Print at 100%, then measure the calibration mark before using the template; printer and driver settings can change the physical scale.
Choose a printable tool
Use a drill grid for rows of holes, a bolt circle for holes around a center, or Print to Scale for an existing image. Enter measured dimensions, then print at 100% and check the calibration mark before transferring the layout.
Graph Paper
Create calibrated square or dot-grid paper, draw on it locally, and export a single-sheet PDF or SVG image.
Cylinder Volume
Calculate cylinder volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Cone Volume
Calculate cone volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Sphere Volume
Calculate sphere volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Pyramid Volume
Calculate pyramid volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Rectangular prism Volume
Calculate rectangular prism volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Solid Volume
Calculate solid volume or solve a missing dimension, with diagrams and metric/imperial outputs.
Tank Volume
Calculate full capacity and partial fill for horizontal or vertical cylinders and rectangular tanks.
Rectangle
Solve rectangle dimensions and diagonal, with area, perimeter and a practical layout squaring example.
Slope
Calculate signed rise/run, gradient, directed angle and a point-slope equation with a displacement graph.
Rectangle Area
Calculate rectangle area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Circle Area
Calculate circle area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Ellipse Area
Calculate ellipse area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Trapezoid Area
Calculate trapezoid area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Kite Area
Calculate kite area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Regular Polygon Area
Calculate regular polygon area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Room Area
Calculate room area from measured dimensions, with unit conversions, a schematic diagram and a worked example.
Triangle
Solve triangle sides, angles and area from known measurements. Includes a labelled diagram, unit conversions and explicit handling of ambiguous solutions.
Right triangle
Solve triangle sides, angles and area from known measurements. Includes a labelled diagram, unit conversions and explicit handling of ambiguous solutions.
Length converter
Convert length units including millimetres, inches, feet and miles.
Area converter
Convert square units, hectares and acres using squared length factors.
Volume converter
Convert litres, cubic units and explicitly labelled US or UK gallons.
Mass converter
Convert metric mass, pounds, ounces and stones with defined unit factors.
Speed converter
Convert speed between metres per second, kilometres per hour, mph and knots.
Angle converter
Convert degrees, radians, turns and gradians, with signed DMS input and output.
Torque converter
Convert torque between newton metres, pound-force feet and related units.
Energy converter
Convert joules, watt-hours and thermochemical calories with visible equivalences.
Linear inches calculator
Add length, width and height to calculate combined dimensions in inches and centimetres.
Random number generator
Generate bounded random integers with optional unique results using browser crypto.
Dice roller
Roll multiple dice with editable sides, individual results and a total.
Test grade calculator
Calculate a percentage and letter grade with editable thresholds and extra-credit rules.
GPA calculator
Calculate credit-weighted GPA from numeric course points on your chosen scale.
Square feet and linear feet calculator
Convert area and linear footage using actual coverage width, with both directions supported.
Log board-foot estimator
Estimate log yield with named Doyle or International quarter-inch rules and explicit rounding.
Engine displacement calculator
Calculate swept engine volume from bore, stroke and cylinder count in litres, cubic centimetres and cubic inches.
Power-to-weight calculator
Compare power per tonne or mass per horsepower with explicit kW, mechanical hp and metric PS units.
How to read a ruler
Select ruler ticks and see reduced inch fractions, decimal inches and millimetres in an interactive reading guide.
Date duration calculator
Count calendar days, weekdays and weekends, or add and subtract days.
Duration calculator
Normalize hours, minutes and seconds and subtract another duration.
Work hours calculator
Calculate shift hours after unpaid breaks, including overnight shifts.
Age calculator
Calculate calendar age on an explicit date in years, months and days.
Time unit converter
Convert seconds, minutes, hours and explicitly defined average months and years.
Time zone converter
Convert dated local times between IANA zones with explicit daylight-saving ambiguity handling.
Motion calculator
Calculate displacement, path length, velocity, acceleration and kinetic energy.
Speed distance time calculator
Solve speed, distance or time with explicit length, speed and duration units.
Angular motion calculator
Calculate angular acceleration, rotation and tangential motion from radian or RPM inputs.
Projectile and free fall calculator
Calculate ideal flight time, range, height and impact speed with a trajectory diagram.
Distance calculator
Measure straight-line coordinate distance or approximate great-circle distance from latitude and longitude.
Fraction calculator
Convert decimals and mixed numbers to exact fractions and perform fraction arithmetic.
Factor calculator
Find prime factors, positive divisors, greatest common divisor and exact least common multiple.
Logarithm calculator
Calculate a real logarithm with an explicit positive base and argument.
Power and root calculator
Square numbers, raise powers and compute real nth roots with domain validation.
Percentage calculator
Calculate percent of a value, reverse percentages, change, difference and percentage tables.
Ratio and golden ratio calculator
Simplify and scale ratios or calculate golden-ratio segments and rectangle sides.
Probability and combinations calculator
Calculate equally likely probabilities, exact combinations and binomial event probability.
Roman numeral converter
Convert integers from 1 to 3999 to canonical Roman numerals and back.
Standard deviation calculator
Calculate sample or population standard deviation, variance, mean and median.
Work and force calculator
Solve Newton law, sum planar force vectors and calculate work at an angle.
Friction calculator
Distinguish actual static friction, maximum static friction and kinetic friction, or solve a coefficient.
Tension calculator
Calculate tension for one vertical rope, two supporting ropes or an ideal two-mass pulley.
Gravity and escape velocity calculator
Calculate inverse-square gravity, attraction force and escape speed from mass and centre distance.
Rotational moment of inertia calculator
Calculate mass inertia for defined shapes and axes, including valid parallel-axis offsets.
Momentum calculator
Solve signed one-dimensional momentum, mass or velocity.
Kinetic energy calculator
Solve energy, mass or speed, compare energy units and estimate average stopping force from distance.
Spring energy calculator
Calculate spring energy, signed restoring force and inverse stiffness or displacement.
Density, mass and volume calculator
Solve density, mass or volume with explicit metric and imperial units.
Water and dry air properties
Calculate tabulated water density, specific gravity, mass and weight, or dry ideal-air density.
Dynamic and kinematic viscosity converter
Convert dynamic and kinematic viscosity using fluid density, including cP and cSt.
Drag, lift and terminal velocity calculator
Calculate drag, lift or signed terminal velocity with explicit area, coefficient and buoyancy.
Pipe flow rate calculator
Calculate full circular-pipe volume flow, mean speed and mass flow.
Reynolds number calculator
Calculate Reynolds number with pipe-only regime interpretation and explicit fluid properties.
Gear ratio and RPM calculator
Calculate driver/driven ratios, speed, torque and theoretical wheel speed with a phase diagram and chart.
Bicycle and BMX gearing calculator
Compare chainrings and sprockets using measured tyre rollout, cadence, gear inches and gain ratio.
Circle, arc and chord calculator
Solve radius, circumference, arc, chord, sagitta, sector and circle-equation centre.
Curve length calculator
Measure polylines or integrate quadratic and cubic Bezier curve length from coordinates.
Angle calculator
Find angles between rays, a missing triangle angle or regular-polygon angles.
Printable calendar
Create a dated monthly or weekly calendar, or a blank grid, with localized weekday labels and PDF/SVG export.
Clock face template
Print a blank or numbered clock face with optional hands, and view a live analogue clock with seconds.
Sundial reading guide and clock-time converter
Read a correctly installed sundial and estimate civil time using date, longitude and UTC offset.
Circle and oval template
Generate repeated circles or ellipses at physical dimensions with centre marks and tiled PDF/SVG export.
Fence post spacing calculator
Calculate equal fence bays, post counts, centre positions and clear gaps for an open run or closed loop.
Board and batten spacing calculator
Lay out edge-flush battens with equal clear gaps, coordinates, quantities and waste.
Wall framing layout and quantity calculator
Create stud coordinates and cut lists with plates, one door/window opening, explicit header assumptions and waste.
Watts, amps and volts calculator
Solve real power, voltage or current for DC, single-phase AC and balanced three-phase systems.
Series and parallel resistance calculator
Calculate equivalent resistance for up to 200 resistors, including ideal short circuits.
Electric field, force and potential calculator
Calculate signed point-charge field, force, potential and energy, or a uniform field from voltage drop.
Wire sizing guide and DC worksheet
Compare copper DC voltage drop with a chosen limit and independently check supplied corrected ampacity.
Mach and speed of sound calculator
Convert Mach and airspeed at an explicit temperature, including mph, km/h, ft/s and knots.
Density and pressure altitude calculator
Calculate pressure altitude, moist-air density altitude or standard tropospheric pressure with explicit station-pressure inputs.
Dew point, wet bulb, heat index and wind chill
Estimate dew point, sea-level wet bulb and NWS heat index or wind chill within stated model limits.
Deck layout planner
Edit a 2D deck plan with board direction, L-shaped cutout, support positions, stock cuts, costs and PDF/SVG/CSV exports.
Sequence calculator
Test arithmetic or geometric sequences and calculate an nth term from supplied values.
Quadratic and completing-square calculator
Find real or complex roots, vertex, discriminant and completed-square form with a graph.
Linear equation grapher
Graph Ax+By=C, including vertical lines, with slope, intercepts and coordinate table.
Tape diagram equation builder
Build an equal-group tape diagram for nx+b=t and show the subtraction and division steps.
Scientific calculator
Evaluate arithmetic, powers, factorials, logarithms and trigonometry with explicit angle mode.
Framing cost calculator
Price purchased studs, plates, headers, connectors and crew labor with explicit markup and tax assumptions.
Drywall installation cost calculator
Calculate whole panels, opening deductions, layers, waste and user-priced installation costs.
Construction material dimensions guide
Compare actual and coordinating brick/block sizes, lumber and crown dimensions with manufacturer references.
Stair landing layout calculator
Plan two flights with uniform risers, landing elevation, straight/L/U footprint and downloadable diagrams.
Spiral stair dimension planner
Calculate spiral diameter, riser height, angular pitch, walking-line arc/chord and tread elevation table.
Wave frequency and wavelength calculator
Convert frequency, wavelength, speed, period and angular frequency with explicit units.
Photon energy calculator
Convert vacuum wavelength, frequency and photon energy using exact SI constants.
Doppler shift calculator
Calculate acoustic or longitudinal relativistic Doppler shifts with explicit velocity signs.
Thin lens calculator
Calculate real or virtual image position, magnification and signed image height.
Heat capacity calculator
Solve heat, mass, specific heat or temperature change with Q = mcΔT.
Ideal gas law calculator
Solve PV = nRT and compare compatible units of the universal gas constant.
Moles, atoms and electrons calculator
Convert mass, moles and particle counts or calculate isotope proton, neutron and electron counts.
Theoretical and percent yield calculator
Calculate limiting reactant, theoretical product and percentage yield from balanced coefficients.
Half-life calculator
Solve remaining amount, elapsed time or half-life for exponential decay.
Freezing point depression calculator
Estimate dilute-solution freezing point from molality, solvent constant and entered van’t Hoff factor.
Water boiling point calculator
Calculate pure-water saturation temperature from absolute pressure using the IAPWS correlation.
Bond angle calculator and geometry guide
Calculate an angle from bond vectors and compare ideal electron-domain geometries.
Dog age comparison by size
Compare whole dog ages with a published size-specific human-age reference table.
Compound interest and CD calculator
Project savings using nominal rates or APY, monthly deposits and an explicit compounding convention.
Loan and vehicle payment calculator
Calculate fixed monthly payments and an amortization schedule, including vehicle trade-in and extra payments.
Tip and bill split calculator
Calculate tips before or after tax and split the total exactly to the cent.
Home purchase budget worksheet
Explore a purchase-price scenario from entered debt caps, ownership costs, rate and down payment.
Inflation and present value calculator
Adjust an amount using entered price indices or a constant annual growth or discount rate.
Currency conversion with an entered rate
Convert currencies using your dated quote and explicit percentage and fixed fees.
Bra measurement and size-chart calculator
Use named Wacoal measurement ranges or convert existing Freya labels across UK, US, EU and French systems.
Dress measurement and editable size-chart guide
Compare bust, waist and hip measurements with a named regular-fit chart or your entered brand table.
Pipe seal catalog selector
Find exact PSI 2023.1 seal models, element counts and article numbers for measured hole and pipe diameters.
Budget at completion and earned value
Sum the approved baseline and compare cost, schedule and remaining-work forecasts with explicit assumptions.
Measured belt size and hole positions
Convert a measured wearing length into belt size and leather-fold hole positions with explicit buckle allowance.
Single-slope roof layout and materials
Calculate single-slope roof area, entered-spacing rafter centres and effective-covering piece quantities.
Four-square court layout
Plan court sides, quadrants, marking width and entered clearance for a four-square ball-game court.
Belt Hole Layout
Lay out evenly spaced belt or strap holes around a measured centre hole and print a full-size guide.
Buckle Fold Template
Mark a measured buckle fold and tongue slot on a full-size strap pattern.
Bag Gusset
Find rounded-panel stitch perimeter, corner transitions and gusset cut length.
Stitch Hole Spacing
Fit a whole number of stitch intervals to a measured seam and print exact hole positions.
Corner Stitch Spacing
Distribute stitch holes through straight runs and a rounded corner.
Rivet Spacing
Space rivets or studs between measured end margins and print a punch guide.
Corner Radius Template
Generate a full-size quarter-circle gauge for a measured leather corner radius.
Grade Calculator
Find the grade, vertical easements and riser heights for a climb, or the run needed for a target grade.
Helix Calculator
Work out helix grade, turns, track length and footprint, and print a full-size deck segment template.
Easement Template
Print a full-size spiral easement and curve template for model railroad track, with the exact offset from the tangent.
Curve Template
Print a full-size circular curve template for one or two tracks, with chord, sagitta and radial tick marks.
Curve Clearance
Find how far cars swing in and out on a curve and the minimum spacing between parallel tracks.
Scale Speed
Convert a timed run over a measured distance into scale mph and km/h, or find the time for a target speed.
Train Length
Scale a train's prototype length to the model, check it against your siding and find how many cars fit.
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.
Print to Scale
Upload an image, set one measured dimension, and prepare a full-size tiled PDF with a calibration check.
Bleed & Crop Marks
Generate a printable bleed, safe-area and crop-mark reference sheet for a trim size.
Model Scale Converter
Convert dimensions between real-world size and model scales, and get a 3D-print slicer resize percentage.
Fret Slot Template
Generate a full-size, printable fret slot layout for twelve-tone equal temperament from scale length and fret count.
Tonearm Protractor
Generate a printable pivot-specific tonearm alignment protractor for Lofgren A/Baerwald, Lofgren B or Stevenson geometry.
Pipe Notch Template
Generate a full-size fishmouth or saddle template for the theoretical intersection between two tubes.
Bolt Circle Template
Enter a bolt circle diameter and hole count to generate a full-size printable template with a calibration check.
Drill Hole Template
Lay out custom rows of drill holes with exact spacing and download a printable template.
Printable Ruler
Prepare a full-size metric, imperial or combination ruler and verify the printed calibration square before use.
Printable Protractor
Prepare a full-size 180° protractor and verify its printed calibration mark before use.
Cone Flat Pattern
Generate the flat (developed) pattern for a truncated cone from its top/bottom diameters and height.
Square to Round
Develop the flat-pattern panels for a square or rectangle-to-round duct or pipe transition by triangulation.
Reducer Layout
Develop the flat-pattern template for a pipe reducer, concentric or eccentric, including the fully flush case.
Flat-Oval to Round
Develop the flat-pattern template for a centered transition between flat-oval and round duct.
Box & Pan Pattern
Develop the one-piece flat-pattern blank for a four-flange sheet metal box, pan or tray, with corner relief.
Segmented Elbow
Lay out a gored/lobster-back elbow's miter angles and per-piece flat pattern from diameter, bend radius, angle and piece count.
Duct Rolled Offset
Calculate rolled-offset travel, advance and roll angle, with a printable mitered-elbow cut template.
Plywood Cut Calculator
Nest an arbitrary parts list onto sheets to minimize waste, with a visual cutting layout you can print.
Linear Cut List Optimizer
Optimize cutting a list of lengths from stock bars/boards, minimizing offcuts and stock used.
Kerf Bend Calculator
Calculate saw-kerf count, spacing and depth for a curved panel, then export a full-size marking layout.
Segmented Bowl Calculator
Calculate miter angle, trapezoid edge lengths and kerf-aware stock length for a segmented turning ring.
Shelf Pin Layout Calculator
Generate a full-size, printable shelf-pin drilling template at the 32 mm system pitch or a custom pitch.
Advanced Hip/Valley/Jack
Calculate hip, valley and jack rafter seat cuts and compound cheek (side) cuts, beyond length and plumb angle alone.
RSC Carton Layout
Draw a basic RSC-style cut and fold layout for early sizing and mock-ups from internal carton dimensions.
Label Sheet Generator
Define label size, gaps and margins to generate a printable grid of blank label outlines.
Loaded Labor Rate
Build the fully-loaded hourly cost and bill rate behind a bare wage, with a visual cost-stack breakdown.
Bid Price Builder
Build a bid price from labor, material, other cost, overhead, contingency and target profit margin, with a visual cost stack.
Winder Stair Layout
Lay out a balanced quarter-turn winder stair with tread geometry, walk-line goings and a scaled plan diagram.
Screw Flight Pattern
Develop an annular-sector workshop blank for one screw-flight turn from outside diameter, shaft diameter and pitch.
Irregular Hip Roof
Calculate the shifted plan angle, true hip length, face-specific backing bevels and jack differences for unequal roof pitches.
Unequal-Pitch Valley
Calculate internal valley centerline geometry, separate backing bevels and side-specific jack differences for two unequal roof pitches.
Pipe Fitting Takeoff
Deduct user-supplied fitting center-to-end dimensions from field measurements to find a pipe cut length.
Offset Branch Template
Generate a full-wrap branch-pipe intersection profile with a signed axis offset and branch angle.
Pipe Offset Clocking
Convert vertical and lateral offsets into near/far-end clock positions and circumference marks from an established datum.
Face Frame Layout
Divide a cabinet face frame into equal openings and generate an optimizer-ready stile and rail cut list.
Drawer Pull Template
Calculate centered knob or pull holes and print a full-scale drawer-front drilling template.
Hinge Cup Template
Lay out editable concealed-hinge cup centers and screw holes on a full-height printable door template.
Truncated Pyramid Pattern
Develop the four true-size trapezoid panels for a centered rectangular truncated pyramid.
Hopper Flat Pattern
Develop four printable trapezoid panels for a centered rectangular hopper inlet and outlet.
Oblique Cone Pattern
Triangulate an offset-apex circular cone into a printable developed blank with true generator lengths.
Polygon Roof Calculator
Calculate common and hip centerline rafters, rise, plan angles and roof-face area for regular 3–16-sided roofs.
Shed Dormer Framing
Intersect a shed-dormer roof with the main roof to find tie-in location, rafter length and theoretical cheek-valley line.