cURL to Kotlin & Ktor Converter

Convert cURL commands into clean, idiomatic Kotlin code using JetBrains Ktor Client with coroutines, Android OkHttp, or Java 11+ HttpClient with full header, authentication, and payload support.

At a glance

cURL to Kotlin Converter is a free web tool that converts cURL commands to modern Kotlin code with Ktor Client coroutines, Android OkHttp, and Java 11. It automatically formats Bearer tokens and Base64 encodes Basic Authentication credentials. Everything runs locally in your browser — nothing is uploaded and no sign-up is needed.

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100% Client-Side In-Browser cURL to Kotlin Converter

Convert cURL commands to modern Kotlin code with Ktor Client (Coroutines), OkHttp (Android), or standard Java 11+ HttpClient. 100% private in browser memory.

Local & Private Instant Conversion
Framework:
cURL Command 0 chars
1
Ready
Method: POST Headers: 0
Kotlin Code Output Ktor Client
1 
// Generating Kotlin code...
Kotlin 1.9+ / 2.0+ Compatible
0 lines
Gradle Dependency Setup
build.gradle.kts
// Add to build.gradle.kts:
implementation("io.ktor:ktor-client-core:2.3.12")
implementation("io.ktor:ktor-client-cio:2.3.12")

JetBrains Ktor Coroutines

Modern asynchronous networking using suspend fun, Ktor CIO engine, and type-safe DSL request builders.

Android OkHttp Integration

Generates clean Kotlin syntax using toRequestBody(), toMediaType(), and idiomatic .use { } auto-closing blocks.

100% In-Browser Privacy

No tracking, no external API calls. All parsing and code synthesis run inside browser memory at $0.00 marginal server cost.

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Why Use This cURL to Kotlin Converter?

Ktor Client & Coroutines: Generates suspend fun request methods using Ktor CIO engine with type-safe DSL builders.
OkHttp for Android: Generates idiomatic Kotlin OkHttp code with toRequestBody(), toMediaType(), and auto-closing .use {} blocks.
Java 11 HttpClient Alternative: Zero-dependency JVM standard library implementation with HttpRequest.newBuilder().
Authentication Handling: Automatically formats Bearer tokens and Base64 encodes Basic Authentication credentials.
Smart Body Detection: Parses JSON payloads into multiline raw strings with .trimIndent() or OkHttp RequestBody.
100% In-Browser Privacy: All command parsing and Kotlin compilation execute strictly in local browser memory.

How to Use cURL to Kotlin Converter

1

Paste Your cURL Command

Paste your cURL command into the input editor or choose one of the preset samples.

2

Select Kotlin Networking Library

Choose between Ktor Client (Coroutines), OkHttp (Android), or Java 11 HttpClient.

3

Copy or Download Kotlin Code

Click 'Copy' to copy the generated Kotlin script or download it as an ApiRequest.kt file.

Worked example: cURL to Kotlin Converter

Executed entirely inside your local browser memory using modern Web APIs. The engine verifies input syntax, performs deterministic transformation, and exposes instant copy or download options.

Sample CURL Data Source 
sample_payload.curl (Valid format conforming to CURL specification)
Resulting KT Output Processed 
converted_result.kt (100% client-side)

Technical Specifications & Engine Details

Technical specifications and engine details for cURL to Kotlin Converter
Specification Details
Supported Formats CURL, TEXT, SH → KT, KOTLIN, TEXT
Execution Mode 100% Client-Side In-Browser (client)
Browser Requirements Requires modern web browser with ECMAScript 6+ and standard DOM Web APIs.
Performance Constraints Client browser memory limit (typically 1–2 GB RAM); processing speed depends on local device CPU.
Maintained by Pragyan Pahadi

100% Client-Side Privacy Guarantee

All cURL command parsing and Kotlin code generation run 100% locally in your browser memory. Your URLs, headers, and credentials never leave your machine.

Frequently Asked Questions

How does this tool convert cURL to Kotlin code?
It tokenizes your cURL command, parses HTTP method, headers, auth, cookies, and data, and generates production-ready Kotlin scripts using Ktor, OkHttp, or Java 11 HttpClient.
Does it support modern Kotlin coroutines?
Yes! Ktor Client mode generates suspend fun functions that integrate seamlessly into Kotlin Coroutines and Android viewModelScope.
Can I use the generated code in Android Studio projects?
Yes! Both Ktor and OkHttp are standard networking libraries for Android applications.
How does it handle Basic Auth (-u) in Kotlin?
It encodes credentials into Base64 using Base64.getEncoder().encodeToString() and sets the standard Authorization header.

Methodology

Rankings and recommendations here are never paid for.

Last updated .

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