Interactive Two-Pole Tarp Tent Generator

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Design two-pole tarps and trekking pole tents using this free interactive pattern generator. Drag the corner points or either pole in the plan view, or type values, then use the pattern canvas to fit pieces on your fabric.

Last updated Oct 2026. There might be bugs. Test pattern with a scaled model or paper before committing to full build. I am not responsible for mistakes on expensive fabric.

Preset Tents

Start from a preset: Custom / current settings3F UL Lanshan 2Zpacks DuplexDurston X-Mid 1Durston X-Mid 2

Examples of popular two-pole tents roughly estimated from published dimensions and photos.

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Tarp Dimensions

Initial Length: 300 cm

Initial Width: 150 cm

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Red Pole Position

Height: 120 cm

X Position: 105 cm

Y Position: 75 cm

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Orange Pole Position

Height: 120 cm

X Position: 195 cm

Y Position: 75 cm

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Display Lengths

Plan View (2D)

Ridge Length (3D)

Hide All

Catenary Curve Depth: 2 cm/m 2 cm/m recommended

These can help with a tighter pitch but reduce headroom

Top-Down Plan View (Interactive)

Click a corner or pole to select and move. Double-click a point to input coordinates.

Manual Editor

The `baseCornersRelative` coordinates are relative to the ridge midpoint between the two poles (e.g., `rel_x: -100` means 100cm to the left of the midpoint), in clockwise order from top-left (corners 1-6). The visualiser will update when you click away from this text box.

3D View

Drag to rotate, scroll to zoom Download as .OBJ.STL

The 3D preview of catenary cut designs is a visual approximation and does not simulate the fabric stretch taken out by the catenary cuts. Use the 2D pattern pieces generated below rather than trying to flatten the 3D model to make your pattern pieces.

Fabric GSM (g/m²):

Est. Fabric Weight:
0 g

Est. Internal Volume:
0.00 m³

Person / sleeping mat options. Mat is 180x65cm

X: 150

Y: 75

Angle: 0°

Height: 180cm

Pattern Layout

Drag and rotate the pattern pieces to see how they fit on your fabric roll width.

Export to a 1:1 scale svg and edit in Inkscape, Illustrator, Affinity, or similar vector image editing software for more detailed pattern adjustments.

Fabric Roll Width (cm):

Seam Allowance (cm):

Split side quads into triangles

Export Pattern as SVG

Pattern Geometry Data

This is the 'cut line' geometry (side lengths and angles) for each panel, calculated based on the 3D tent shape. Quad side panels also list the diagonal used to flatten them (the quad is split along its shorter 3D diagonal). This data can be copied for external use

Edit Corner Coordinates

Corner positions are relative to the ridge midpoint. Pole positions are absolute.

Relative X Position (cm)

Relative Y Position (cm)

Vertical Height (Z) (cm)

Cancel Save

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