Furniture shop math

Measure twice. The saw only gets one pass.

Twenty shop calculators for furniture makers. Board feet, dovetails, the 32 mm line, kerf bends, segmented rings. The arithmetic runs on this device. Your numbers are not uploaded.

Open the full calculator Lay out dovetails

Calculators

Volume, layout, and joints. One bench, not a junk drawer of converters.

Uploads

The math stays in the browser. No account, no file leaving the machine.

in + mm

Both rules

Switch on the tool. A suffix such as mm or ft overrides the field.

No span

No code claims

Not a stair, a beam, or a shelf rating. Measure, then cut a test.

Stock

Lumber and materials

All stock tools

Featured

Board foot calculator

Volume of the boards on your list, with waste if you want it.

Featured

Panel glue-up

Board count for a panel, after the glue lines.

Stock

Sheet goods calculator

How many sheets the rectangles want, kerf included.

Stock

Nominal and actual lumber sizes

What the nominal size became after dressing, and how your board differs.

Stock

Epoxy pour and finish coverage

Litres of pour, the volume split, and finish from the can’s own rate.

Stock

Wood movement calculator

How far a width moves when the moisture content changes.

Stock

Saw kerf and yield

Piece count from one board, with the kerfs between them.

Stock

Linear cut list

How many boards a mixed cut list wants.

Layout

Joints, curves, and the 32 mm line

All layout tools

Layout

Dovetail layout

Tail width, pin slope, and the marks along the end.

Layout

Miter angle calculator

Miter and bevel from square, for the joint you are actually cutting.

Layout

Segmented ring

Segment length, miter, and the strip to cut them from.

Layout

Shop fraction calculator

Fractions, decimal inches, and millimetres on one reading.

Layout

Picture frame and mat calculator

Mat, glass, outside size, and the moulding cuts for a rectangle.

Layout

Drawer box calculator

Outside box and the five parts, from the opening you measured.

Layout

Equal spacing calculator

Equal gaps for shelves, or equal centers for a row of holes.

Layout

Leg taper and splay

The offset and the angle for a taper, then the kick of a splayed stance.

Layout

32 mm system holes

Hole centers for a system row, from the bottom up.

Layout

Arc from chord and sagitta

Radius, rise, and arc length for a circular curve.

Layout

Dado and rabbet

Joint width, cut depth, and the wood still under the cutter.

Layout

Kerf bending

Kerf count and spacing for a radius and a bend angle.

Guides

Read the method, then run the number

All guides

Guide

How to Calculate Board Feet (with examples)

The 144 rule, when the name of the board is not the stick you measured, and a waste allowance.

Guide

Nominal vs Actual Lumber Sizes

The chart of dressed sizes, and why the name on the rack is not the stick you measure.

Guide

How to Calculate Segmented Bowl Ring Angles and Segment Lengths

The miter is 180° divided by the segment count. The length that reaches the finished circle is longer than the chord.

Guide

How to Estimate How Much Plywood You Need

Sheet size, a cut list of rectangles, and the saw kerf that pushes a tight layout onto another sheet.

Guide

How Much Does a Board Expand and Contract?

Flat-sawn boards move more than quarter-sawn ones. The change is width times a coefficient times the moisture swing.

Guide

How to Make a Cut List for a Woodworking Project

Parts from the drawing, then the boards and the sheets, with joinery, kerf, and a bookcase you can check.

The bench

What CutCalc is

Fast, private, accurate shop math for woodworkers. Board feet on the rack, a kerf that changes the count, a flat-sawn panel in January. The arithmetic runs on this device. Your numbers are not uploaded.

Measure twice, so you cut once. Each page names the model it uses, including the dimensional change coefficients from the U.S. Forest Products Laboratory’s Wood Handbook. A result is a planning number. Mark the stock, then cut a test in scrap.

CutCalc is a free set of woodworking calculators. Advertising stays off until a publisher ID is set. Nothing here promises an income, a grade of lumber, or a joint that will carry a load.