Is there a difference between this and prisma-zod-generator?

prisma-zod-generator is a Prisma generator plugin that auto-generates Zod schemas during prisma generate. This converter is a quick online tool — no install, no Prisma CLI needed. Great for prototyping or when you just need a few schemas.

Prisma to Zod Converter

Q: Why use Zod with Prisma?

Prisma provides database-level types, but those types aren't available at runtime for input validation. Zod schemas let you validate API request bodies against the same shape as your Prisma models — before data reaches the database.

Q: How are Prisma optional fields handled?

Prisma fields marked with '?' (e.g., 'email String?') become '.optional()' or '.nullable()' in the Zod schema, preserving the same optionality semantics.

Q: How are Prisma relation fields handled?

Relation fields (fields that reference another model) are omitted from the Zod schema with a comment suggesting z.lazy() for recursive schemas. This is intentional — relations are loaded separately in Prisma queries.

Convert Prisma schema models to Zod validation schemas with AI — free, no login required.

Using Prisma with tRPC, Next.js API routes, or any TypeScript backend? Convert your Prisma models to Zod schemas for runtime input validation — no manual mapping needed.

Paste your code, then click Convert

Zod

How to use this tool?

This online converter harnesses AI to translate Prisma schema models to Zod validation schemas. Follow these steps:

Paste your Prisma model definitions into the input box.
Click the "Convert" button to generate Zod schemas from the Prisma models.
View the Zod schemas and inferred TypeScript types in the output box.

Example: Simple Function

Prisma

model User {
  id        Int      @id @default(autoincrement())
  name      String
  email     String   @unique
  active    Boolean  @default(true)
  createdAt DateTime @default(now())
}

Zod

import { z } from 'zod';

export const UserSchema = z.object({
  id: z.number().int(),
  name: z.string(),
  email: z.string(),
  active: z.boolean(),
  createdAt: z.date(),
});

export type User = z.infer<typeof UserSchema>;

How to Convert Prisma schema to Zod

Prisma generates TypeScript types from your schema, but those types do not include runtime validation. When accepting user input that maps to Prisma models — API request bodies, form submissions, or batch imports — you need Zod schemas that mirror the Prisma model field types and constraints.

The Prisma to Zod converter generates Zod validation schemas from your Prisma model definitions. Paste any Prisma schema and get Zod schemas that match field types, optionality, and relations.

Why Use a Prisma schema to Zod Converter?

→Validate API request bodies against Prisma model shapes before database writes
→Reuse Prisma field definitions as runtime validation schemas without duplication
→Generate create/update Zod schemas from Prisma models for form validation
→Catch invalid data at the API boundary before it reaches the database

What the Prisma to Zod Converter Handles

String fields to z.string()

Int fields to z.number().int()

Float to z.number()

Boolean to z.boolean()

DateTime to z.date() or z.string()

Json fields to z.any() or z.unknown()

Optional fields (@default or ?)

Nullable relations

Enum types to z.enum()

Array relations

Nested create schemas

Unique constraint hints

Frequently Asked Questions

Why use Zod with Prisma?

Prisma types exist at compile time but not runtime. Zod schemas validate API inputs against your Prisma model shape before any database call — combining Prisma's type safety with runtime validation.

How are Prisma optional fields handled?

Prisma 'field String?' becomes '.optional()' or '.nullable()' in Zod, preserving the same optionality semantics.

What Prisma scalar types are supported?

String→z.string(), Int→z.number().int(), Float→z.number(), Boolean→z.boolean(), DateTime→z.date(), Json→z.unknown(), Decimal→z.number(). Relation fields are omitted with a comment.

How are Prisma relation fields handled?

Relation fields are omitted from the Zod schema with a comment suggesting z.lazy() if needed. Prisma loads relations separately via include/select, so they're typically not part of input validation.

Is this different from prisma-zod-generator?

prisma-zod-generator is a Prisma generator plugin that runs during 'prisma generate'. This is a quick online converter — no install, no CLI needed. Great for prototyping or generating schemas for a few models.

Do @default and @unique attributes affect the Zod schema?

No. @default values and @unique constraints are database-level concerns handled by Prisma. The Zod schema focuses on runtime shape validation, not database constraints.

Why use Zod with Prisma?

Prisma types are compile-time only — they do not validate incoming request data at runtime. Zod validates data before it reaches Prisma, preventing invalid data from causing database errors or security issues. The combination gives you end-to-end type safety from API input to database.

Is there an official Prisma Zod generator?

Yes. zod-prisma-types and prisma-zod-generator are community packages that auto-generate Zod schemas from Prisma schemas as part of the prisma generate step. The JS2TS converter is useful for quick one-off conversions.

How do Prisma optional fields map to Zod?

Prisma optional fields (marked with ? or having @default) become .optional() in Zod. Fields with @default(autoincrement()) or @default(now()) are omitted from create schemas since Prisma handles them.

How do Prisma relations appear in Zod schemas?

Relations are converted to nested Zod schemas or omitted depending on the context. For create schemas, related model IDs are typed as strings or numbers. Full nested schemas are generated for complex create-with-connect patterns.

How do Prisma enums convert to Zod?

Prisma enum types convert to z.enum([...values]) where the values are the enum member names as string literals. This matches Prisma's enum handling and gives runtime validation of enum values.

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