Migration Guide

Better AuthClerk

Migrate from Better Auth to Clerk

Migrate from managed Clerk to self-hosted Better Auth: user and session data export, password hash handoff, organization plugin mapping, MFA re-enrollment, and frontend component rebuild.

High complexityAuth
Get Your Migration Plan

What you get

Risk assessment

Blockers, warnings, and unknowns ranked by severity

Effort estimate

Hours, t-shirt size, and role breakdown

Cost estimate

Labor, infrastructure, and tooling cost range

Migration steps

Ordered execution plan with durations

Open questions

What still needs to be answered before you start

Draft config or code

Starter configs when the migration path supports it

Why teams migrate from Better Auth to Clerk

Good fit when

  • +Teams moving from self-hosted auth to managed to offload ops, gain SOC2/HIPAA compliance, or standardize on polished hosted UI.
  • +Apps willing to accept per-MAU pricing in exchange for reduced operational burden.
  • +Teams that want Clerk's organizations, SSO, and enterprise features without building them.

Strengths

  • Fully managed: no database, no session storage, no auth service to operate.
  • Polished hosted components (SignIn, UserButton, OrganizationSwitcher) ship with minimal code.
  • Built-in compliance, audit logging, and enterprise SSO on higher plans.
  • Robust webhook system for syncing auth events to downstream systems.

Tradeoffs

  • Per-MAU pricing — costs scale with user growth.
  • User data lives in Clerk's cloud rather than your database.
  • Customization limited to what Clerk's SDK and dashboard support.
  • MFA secrets and passkey credentials from Better Auth typically require user re-enrollment.

Migration notes

  • Export users from your Better Auth database and import via Clerk's Backend API bulk user import endpoint.
  • Clerk accepts pre-hashed passwords (bcrypt, argon2, scrypt, pbkdf2) on import — verify your hash scheme is supported.
  • Map Better Auth's organization plugin to Clerk Organizations; this may require a higher Clerk plan tier.
  • Replace Better Auth client calls (useSession, authClient.signIn) with Clerk hooks and components throughout the frontend.
  • Reconfigure JWT templates, custom claims, and session token customization in the Clerk dashboard.
  • Convert Better Auth lifecycle hooks to Clerk webhooks for every downstream integration.
  • Plan cleanup of Better Auth tables (user, session, account, verification) after successful cutover.
Typical effort:High (2-6 weeks depending on user volume and frontend refactor scope)

How it works

1

Describe your migration

Select Better Auth as source and Clerk as target. Add context about your setup — configs, docs, architecture notes.

2

Keshro runs the analysis

Keshro researches the path, finds similar past migrations, and generates a structured assessment with risks, effort, cost, and steps.

3

Get your plan

Review the migration plan, refine it with your team, and use it as a living document during execution.

Ready to plan your Better Auth to Clerk migration?

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