Free load test converter

Load test converters

Turn any API artifact into a runnable k6 load test. Pick your format below. Free, private, and it runs entirely in your browser.

Converts in your browser. Your request never leaves this page.

Convert to k6

cURL→k6

cURL to k6 Converter

Convert a curl command into a runnable k6 load test script. Free and private.

Open converterHAR→k6

HAR to k6 Converter

Convert a HAR file into a runnable k6 load test script. Free and private.

Open converterPostman→k6

Postman to k6 Converter

Convert a Postman collection into a runnable k6 load test script. Free and private.

Open converterOpenAPI→k6

OpenAPI to k6 Converter

Convert an OpenAPI or Swagger spec into a runnable k6 load test script. Free and private.

Open converter

Convert to JMeter (.jmx)

cURL→JMeter

cURL to JMeter Converter

Convert a curl command into a runnable JMeter .jmx test plan. Free and private.

Open converterHAR→JMeter

HAR to JMeter Converter

Convert a HAR file into a runnable JMeter .jmx test plan. Free and private.

Open converterPostman→JMeter

Postman to JMeter Converter

Convert a Postman collection into a runnable JMeter .jmx test plan. Free and private.

Open converterOpenAPI→JMeter

OpenAPI to JMeter Converter

Convert an OpenAPI or Swagger spec into a runnable JMeter .jmx test plan. Free and private.

Open converter

How it works

1Pick your formatChoose cURL, HAR, Postman, or OpenAPI based on what you already have.
2Paste or uploadDrop in your command, capture, collection, or spec. Nothing is sent to a server.
3Run it in the cloudCopy the generated k6 script, or sign up free to run it as a real cloud load test.

Frequently asked questions

What can I convert?

A cURL command, a HAR capture from your browser, a Postman collection or an OpenAPI spec. Each becomes a runnable k6 script, and JMeter .jmx output is available from the same inputs.

Is anything sent to a server?

No. The conversion runs entirely in your browser, so the command, capture, collection or spec never leaves your machine. That matters here, because these files usually carry real headers and tokens.

Do I need an account?

Not to convert. Paste or upload, then copy the generated script. An account is only needed if you want to run the result as a cloud load test.

How complete is the generated script?

It reproduces the requests, headers and bodies you supplied, which is the tedious part. Before treating it as a real test you will still want think time, a load profile, and assertions on the responses that matter.

Which input should I start from?

A HAR capture, if you have one, because it records what the browser actually sent including headers you would not think to write down. An OpenAPI spec is the better starting point when you want coverage of an API rather than a replay of one session.
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