Hangline

For curators, artists and installers

Every hook marked before you lift the hammer.

Hangline draws your wall to scale, spaces the works evenly on the eye-line, and gives the installer the exact position of every hook. It runs in your browser, saves as you go, and needs no account.

Plan a wall See how it works

Free. No account. Your plans stay in your browser.

600 cm300 cm 36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm Eye-line 145 cm
East Gallery, north wall Five works, spread across 600 cm gap 36.7 cm · eye-line 145 cm

The back of the envelope

Hanging a show is arithmetic you do on a ladder.

Measure the wall. Add up the frames. Divide what is left into even gaps. Find the centre of each work, raise it to the eye-line, then subtract the wire’s drop to find the hook. Do it again when the artist swaps two pieces.

(600 − 380) ÷ 6 = 36.67

Hangline does that sum, and every one after it.

How it works

Three steps from tape measure to pencil marks.

  1. 600 cm300 cm 36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm Eye-line 145 cm
    01

    Measure the wall

    Tape measure, pencil · centimetres or inches

    Enter the wall’s width and height. The eye-line starts at 145 cm, the usual gallery height, and you can move it. Type inches the way your tape reads them, like 34 3/8.

  2. 600 cm300 cm 36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm Eye-line 145 cm
    02

    Add the works

    Width, height, hanging hardware

    Give each work its size and say how it hangs: one hook, or a pair of D-rings. Add the hook drop, the distance from the top of the frame down to where the wire pulls tight, and Hangline handles the rest.

  3. 600 cm300 cm 36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm Eye-line 145 cm
    03

    Arrange, then mark

    One click · hook table · install sheet

    Press Arrange and the works line up in your order, evenly spaced and centred on the eye-line. Drag or nudge any of them by hand. Then print the install sheet: every hook, measured from the left edge, the right edge and the floor.

600 cm300 cm 36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm36.7 cm Eye-line 145 cm

Before install day

It tells you what will go wrong while it is still a drawing.

Every hook, left to right

Measured from the left edge, from the right edge, and up from the floor, so the installer can work from whichever corner is easier. Pairs of D-rings are listed as a left hook and a right hook.

Units
Hook positions for East Gallery, north wall
WorkHookFrom leftFrom rightFrom floor
Tidewater Ihook76.7 cm523.3 cm185 cm
Salt Studyhook178.3 cm421.7 cm170 cm
The Long Fieldleft hook255 cm345 cm207 cm
The Long Fieldright hook345 cm255 cm207 cm
Salt Study IIhook421.7 cm178.3 cm170 cm
Tidewater IIhook523.3 cm76.7 cm185 cm

Overlaps and walls that run out

When two works share space, or one runs past the edge, the floor or the top of the wall, Hangline says which and by how much, and outlines them in rust.

Salt Study and The Long Field overlap.

After Arrange: No problems found.

  • Centimetres or inches

    Switch a plan’s unit at any time. Every length is stored in whole millimetres, so nothing drifts. Inches show to the nearest eighth.

  • A clean install sheet

    The elevation and the hook table on paper, with the buttons and menus left off. Print it, or save it as a PDF from the print dialog.

  • Yours, in your browser

    Plans save as you type and never leave your computer. Export a plan as a file to back it up or open it on another machine.

Try it here

This is the planner itself, not a picture of it.

Start a plan right on this page. Anything you make here is saved in this browser and will be waiting when you open the planner.

Hangline Browser app, 2026 runs offline once loaded · no account Open full screen

The wall is waiting.

Measure it once. Hang it once.

Plan a wall