Minkowski Diagram

Draw spacetime diagrams for special relativity. Add worldlines & events, see the live result on the right.

Quick Presets

Add Worldline (observer / rocket)

Label

Velocity β = v/c

Start x

Start ct

Color

Add Event (point in spacetime)

Label

Color

Objects

Nothing yet — add a worldline or event above

View Settings

Time range ±ct

Space range ±x

Grid density Medium

Grid Light cones Axis labels Simultaneity lines

Background

#ffffff

Light cone color

Lorentz Boost (view from another frame)

Boost velocity β

Transforms all events & worldlines into a new inertial frame.

Units: c = 1 (natural units). β = v/c (−1 < β < 1).
Light cones are the 45° lines (speed of light).
Time runs up, space left–right. Origin is the black dot.

Your Diagram

Add objects on the left to see the spacetime diagram

Download & Share

robot_2

Chrono

Space-Time Assistant

Hi! I’m Chrono.
Tell me what to draw.
• “Add rocket at 0.6c”
• “Show twin paradox”
• “Event at x=3, t=4”
• “Boost by 0.5c”
• “Clear all”