---
title: Limits
description: Rate limits, file sizes, storage, and how long uploads, outputs and jobs last.
---

## Rate limit

Each API key can make **120 requests per minute** across every job route. The window starts with the first request and resets one minute later. Request 121 inside the window returns `429 rate_limited`.

The limit is per key, not per account. Uploads and downloads through signed URLs do not count, and neither does `GET /v1/formats`.

The API sends no `Retry-After` or `RateLimit` headers. Back off on your side, as shown in [Errors and retries](/docs/guides/errors-and-retries#backoff).

## Sizes and counts

| Limit                                               | Value                                |
| --------------------------------------------------- | ------------------------------------ |
| Input file size                                     | 1 byte to 2,000,000,000 bytes (2 GB) |
| Unexpired jobs with uploads, per account            | 100                                  |
| Declared input bytes across those jobs, per account | 50 GB                                |
| Outputs per job                                     | 256 files, 4 GB in total             |
| Conversion time per attempt                         | 10 minutes                           |
| Attempts per job                                    | 3                                    |

The storage limits count every job created in the last 24 hours, including cancelled and failed ones, until the job's files are deleted at expiry.

## Lifetimes

| Item                              | Valid for                                                          |
| --------------------------------- | ------------------------------------------------------------------ |
| `upload_url`                      | 15 minutes after the job is created                                |
| Output download URLs              | `expires_in` seconds, at most 5 minutes; request new ones any time |
| A job, its upload and its outputs | 24 hours after creation                                            |

## Spend cap

Each job reserves 1 cent when it is created and is billed only if it succeeds. Once billed plus reserved spend reaches your cap for the billing period, creating a job returns `403 limit_reached`. Change the cap on the [dashboard](https://convt.app/dashboard/api).