| #https://www.notion.so/n8n/Frontmatter-432c2b8dff1f43d4b1c8d20075510fe4 | |
| contentType: howto | |
| description: Call workflows from other workflows, and split large workflows into smaller components. | |
| # Sub-workflows | |
| You can call one workflow from another workflow. This allows you to build modular, microservice-like workflows. It can also help if your workflow grows large enough to encounter [memory issues](/hosting/scaling/memory-errors.md). Creating sub-workflows uses the [Execute Workflow](/integrations/builtin/core-nodes/n8n-nodes-base.executeworkflow.md) and [Execute Sub-workflow Trigger](/integrations/builtin/core-nodes/n8n-nodes-base.executeworkflowtrigger.md) nodes. | |
| ## Set up and use a sub-workflow | |
| This section walks through setting up both the parent workflow and sub-workflow. | |
| --8<-- "_snippets/flow-logic/subworkflow-usage.md" | |
| ## How data passes between workflows | |
| --8<-- "_snippets/flow-logic/subworkflow-data-flow.md" | |
| ## Sub-workflow conversion | |
| See [sub-workflow conversion](/workflows/subworkflow-conversion.md) for how to divide your existing workflows into sub-workflows. | |