Sankey Diagram Maker

What does a Sankey diagram show?

A Sankey diagram represents quantities moving through a network, with band width indicating the amount on each connection. It makes large routes, splits, and losses visible across stages.

Use it when amounts move between stages

Sankey diagrams suit conversion funnels, material flows, energy balances, and allocations. They require quantitative links; a process description with no amounts is usually clearer as a flowchart.

Keep the flow accounting consistent

1. Use one comparable unit. Do not connect counts to currency amounts as if they were the same quantity.
2. Define the measurement period. Flows from different periods may not form a meaningful balance.
3. Account for splits. Show losses, exits, or retained amounts when outgoing totals differ from incoming totals.
4. Name nodes deliberately. Repeated node names can merge flows that should remain separate.
5. Check proportional widths. The visual magnitude should agree with the values on the connections.

From connection data to a flow picture

MyMap arranges your quantitative links into a diagram and revises them on request. The example follows 20,000 visitors through interest, consideration, and trial to 420 paid customers, with separate exit flows and a shared Drop-off destination.