A Human Design compatibility chart (composite chart) overlays two individual BodyGraphs to reveal how two people's energies interact. It shows electromagnetic connections, shared gates, and areas of potential friction or harmony.

The compatibility score (0–100) is based on the types and number of connections between two charts. Electromagnetic channels have the highest weight, followed by companionship gates, dominance channels, and compromise channels.

Yes, accurate birth times are important for a precise compatibility reading. Even a few minutes' difference can change gate activations and affect the composite chart. Use the time from your birth certificate for best results.

Electromagnetic channels are formed when Person A has one gate of a channel and Person B has the other gate. This creates a powerful magnetic pull between two people — it's often what creates initial attraction and a sense of 'completion' in relationships.

Yes, this Human Design compatibility calculator is completely free. Enter the birth data for two people and instantly receive a full composite analysis with connection breakdown and harmony score — no registration required.