Start with what you know. Find room for what comes next.
A plan file saves every measurement and furniture position. Import it here whenever you need it.
Local browser storage is specific to this browser and device.
You can add exact dimensions after placing it.
Save a separate copy of your measurements and arrangement.
Saved in this browser. Use Saved plans → Export all layouts for a backup.
Open any layout to return to it. If your current draft has changes, we’ll save a copy before switching.
1. Choose a room shape and units. Enter measured wall lengths; leave unknown values blank. Calculated dimensions are marked.选择房型和单位，填写实测尺寸；未知值留空，推算值会标为 CALCULATED。
2. Select furniture to set width, depth and position. Drag to move; R / Shift+R rotates. Arrow keys move 1 cm, Shift+arrows 10 cm. Lock prevents moving.选择家具输入宽、深和位置。拖动摆放，R 旋转，方向键微调，Lock 锁定。
3. Save plan keeps a named copy in this browser. Export JSON backs up editable data; SVG exports the whole drawing.Save plan 在本浏览器保存方案；JSON 可备份并重新编辑，SVG 导出完整图纸。
4. Features can enable an optional bathroom or sink. Start over resets the draft; Undo can restore it.Features 中可启用浴室、水槽；Start over 重置草稿，可用 Undo 撤销。
All dimensions are stored in centimeters. Preview proportions are approximate until measured. Three orthogonal templates are supported; arbitrary polygons, wall thickness and building-code checks are outside this version. / 未测量尺寸仅供示意。本版支持三种正交房型，不含任意多边形、墙厚及建筑规范校核。Data stays on this device. Export backups before clearing browser data.