Calculators for Contractors, Builders, Remodelers, Carpenters, Woodworkers + Scale Modelers

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👈 Inch or Metric

Stair Calculators - Full Plans

Headroom - Stair and Stringer Diagrams.
Spiral Stair Calculator
Baluster Spacing Calculator
Inch | Metric

Wall Framing Calculator

Calculate Wall Framing member placement,
sheet placement and quantities.

Inch | Metric

Hip Roof Framing - Skillion - Gable

Lay out roof rafter ridge hip and creeper framing plans

Hips Ridge Commons Jacks - Lengths Angles Cuts and Template

Diagrams - Cut Templates - Setout Plans.
Rafter Calculator - Gambrel Geometry
Inch | Metric

Deck Plan and Cost Calculator

Stumps, Bearers, Joists, Boards.
Spacings, Quantities, Costs.
Inch | Metric

Pulley - Belt - Rpm

Inch | Metric

Pitch to Angle Calculator

Convert between Pitch and Angle.
Animated Diagrams.

Rise in Run

Baluster Spacing Calculator

Calculate any Centers and Spacing with Quantities and Running Set-out Measurements

Inch | Metric

Gambrel Roof Geometry

Gambrel Roof Framing Geometry
Rafter and Gusset Diagrams.

Inch | Metric

Concrete Rebar Calculator

Rebar Spacing, Length and Weight.
Exact or evenly adjusted spacing,
with running placement mark out lists.

Circle Divider - Circle Math

Pipe Notching Templates

Print and cut pipe notching, miter and pipe through sheeting templates.
Inch | Metric

Kerf Spacing Calculator for Bending Wood

Calculate Kerf Spacing for bending wood
With printable full scale set out templates.

Inch | Metric

Segmented Turning Calculator

Calculate Segment Sizes for Woodturning.

Inch | Metric

Linear ~ Square ~ Cubic Cost

Inch | Metric

Large Printable Text Templates

Enter text or numbers, select font,
drag sliders to re-size + auto measure.

Print large text and number templates.

Dovetail Template Generator

Generate and print Dovetail joint templates online

Print, fold over end of wood and
cut through the template.
Inch | Metric

Interactive Visual Triangle Calculators

Interactive Visual Trigonometry Calculators

Find Triangle Side Lengths, Angles, Area etc with animated interactive diagrams. Click and drag to edit and calculate. No Math Required!

How to Lay Out a Square or Rectangle
Square Up

Enter 2 side lengths to draw diagram with
correct diagonal for square layout.

Print Cut & Fold Working Paper Sundials

Print cut and fold working paper sundials

Paper Sundials and full scale templates.

Horizontal Sundials Equatorial Sundials

Chain and Sprocket Calculator

Chain Length
Sprocket Centers
RPM & Gear Ratio
Chain Speeds

Full Scale Rafter Cut Templates

Print - cut and fold over rafter to mark or cut.

Gear Ratio + RPM to MPH/KPH Calculator
With Auto Shift and Tracer

Hit Auto Shift to run up through the gears recording shift point RPM and MPH/KPH.

If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks

How should we spell it?
Metre Meter		Results

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Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare.

View page on Phone via QR Code (Not current calculation result)

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All calculators on this site are geometric only.
Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.

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