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Developer-First File Conversion API

Simple, predictable pricing. Unlimited sandbox testing. 100+ formats supported.

Trusted by Thousands of Users Worldwide

Our conversion service has been recognized for its reliability and ease of use

Capterra: ConversionTools.io RatingCapterra: ConversionTools.io Best Ease of Use 2025

Join thousands of satisfied customers who trust our enterprise-grade conversion platform

Need a simple web interface?

Try our web converter for drag-and-drop file conversion. No coding required.

Unlimited Sandbox

Test integrations without counting quota

Add sandbox: true to any request for instant mock responses. Perfect for CI/CD testing.

OpenAPI Spec

Auto-generate client code

Standard OpenAPI 3.0 specification for code generation and API exploration tools. Download

Client Libraries

Node.js, Python, and PHP

Official libraries with TypeScript support. Or use REST API directly with any HTTP client.

Webhooks

Async conversion callbacks

Get notified when conversions complete. No polling required for long-running tasks.

Free Forever Plan

Perfect for testing and hobby projects

Free Forever

Registered User

For users who signed up and activated their account

Sandbox: Unlimited
Free
  • 20 MB file size limit
  • 10 API calls per Day (max 100 API calls per Month)
  • 24 hrs file retention
  • Retention control
  • AI Converter Studio
  • Custom Converters
  • Batch conversions
  • API access
  • Email Support
  • No Ads
  • 100 AI credits per month
MonthlyYearlySave 15%

Popular API Plans

Optimized for high-volume document processing

50 MB / 1000

Perfect for small apps

Sandbox: Unlimited
$6/1 Month

* Regional pricing available

  • 50 MB file size limit
  • 1000 API calls per Month
  • 24 hrs file retention
  • Retention control15-min or delete on demand
  • AI Converter Studio
  • Custom Converters
  • Batch conversions
  • API access
  • Email Support
  • No Ads
  • 100 AI credits per month

No contract

Recurring payments

Most Popular

100 MB / 2000

Best for production apps

Sandbox: Unlimited
$21/1 Month

* Regional pricing available

  • 100 MB file size limit
  • 2000 API calls per Month
  • 24 hrs file retention
  • Retention control15-min or delete on demand
  • AI Converter Studio
  • Custom Converters
  • Batch conversions
  • API access
  • Email Support
  • No Ads
  • 100 AI credits per month

No contract

Recurring payments

500 MB / 5000

High-volume with large files

Sandbox: Unlimited
$54/1 Month

* Regional pricing available

  • 500 MB file size limit
  • 5000 API calls per Month
  • 24 hrs file retention
  • Retention control15-min or delete on demand
  • AI Converter Studio
  • Custom Converters
  • Batch conversions
  • API access
  • Email Support
  • No Ads
  • 100 AI credits per month

No contract

Recurring payments

API Features

Everything you need for production integrations

FeatureFree50 MB / 1000100 MB / 2000500 MB / 5000
Monthly API Conversions*1001,0002,0005,000
Max File Size20 MB50 MB100 MB500 MB
Sandbox ModeUnlimitedUnlimitedUnlimitedUnlimited
OpenAPI SpecYesYesYesYes
Client LibrariesYesYesYesYes
Webhook CallbacksYesYesYesYes
SLA Uptime--99.5%99.9%
SupportEmailEmailPriority EmailPriority + Slack
Rate Limit HeadersYesYesYesYes
AI Conversion Credits100/month100/month100/month100/month
File Retention24 hours24 hours24 hours24 hours
Retention Control-15-min / On-demand15-min / On-demand15-min / On-demand

*Monthly API Conversions: Only successful conversions count toward your quota. Failed conversions are not charged.
Note: AI Conversion Credits are separate from regular conversions and are used specifically for AI-powered converters. Need more? Buy additional credits anytime.

Quick Start Example

Get converting in under 5 minutes

javascript
// 1. Install client library
npm install conversiontools
// 2. v2 features: TypeScript, streaming, progress tracking, webhooks
import { ConversionToolsClient } from 'conversiontools';
const client = new ConversionToolsClient({
apiToken: 'your_api_key'
});
// 3. Convert a file
await client.convert({
type: 'convert.xml_to_excel',
input: './invoice.xml',
output: './invoice.xlsx',
options: {
sandbox: true // Test without counting quota
}
});
console.log('File saved to: ./invoice.xlsx');

Custom API Plan

Configure limits for your specific integration needs

MonthlyYearlySave 15%

Configure Your Plan

Adjust conversion plan limits and click "Register Account" button.

See our Refund Policy for details.

100 MB / 200

$7/1 Month
  • 100 MB file size limit
  • 200 conversions per Month
  • 24 hrs file retention
  • Retention control15-min or delete on demand
  • AI Converter Studio
  • Custom Converters
  • Batch conversions
  • API access
  • Email Support
  • No Ads
  • 100 AI credits per month

No contract

Subscription

Recurring payments

Common for: High-volume document processing, webhook integrations, enterprise workflows

Need Even More?

Custom SLAs, dedicated support, volume discounts

We can handle files up to 100 GB

Contact Us for Enterprise

Frequently Asked Questions

Everything you need to know about our API pricing

What is sandbox mode?

Sandbox mode allows unlimited testing without counting against your quota. Add sandbox: true to any API request to get mock data back in 2-5 seconds. Perfect for development and testing your integration before going live.

Do I need different plans for web and API usage?

No! Your plan covers both web conversions and API calls. Use the same account for both. You can convert files through our website or programmatically via the API - both count against the same monthly limit.

What happens if I exceed my monthly limit?

API requests will return a 429 rate limit error with details about your quota and reset time. You can upgrade instantly via the dashboard to a higher plan, and the change takes effect immediately.

Can I change plans anytime?

Yes! Upgrade or downgrade instantly through your dashboard. Changes take effect immediately and billing is prorated. There are no contracts or commitments - cancel anytime.

What formats are supported?

100+ formats including Office documents (Word, Excel, PowerPoint), PDF, Images (PNG, JPG, SVG), Video, Audio, CAD, and more. See the full list in our API documentation.

Is there an SLA?

Pro plans include 99.5% uptime SLA, Business plans include 99.9% uptime SLA. Free and Starter plans don't include SLA guarantees but we strive for the same high uptime for all users.

What are AI Conversion Credits?

AI Conversion Credits are separate from regular conversions. All registered users (free and paid) get 100 AI Conversion Credits per month. These credits are specifically for AI-powered converters, with the number of credits consumed depending on the specific converter and complexity of your file.

Regular conversions: 100 per month (free tier) use your standard conversion quota.
AI conversions: Use AI Conversion Credits (100/month), a separate quota for AI-powered features.

Need more credits? You can purchase additional AI credits anytime. Purchased credits never expire!

Are there client libraries available?

Yes! We provide official client libraries for Node.js, Python, and PHP. Install via npm: npm install conversiontools. All libraries support TypeScript. You can also use our REST API directly with any HTTP client.

What happens to my files after conversion?

Source files (files you upload) are automatically deleted immediately after conversion completes.

Converted files (results) are stored for 24 hours by default, giving you time to download them via the API. After the retention period expires, all files are automatically and permanently deleted from our servers.

Paid plans get additional control: you can choose to auto-delete converted files after 15 minutes instead of 24 hours, or delete them instantly on demand for enhanced privacy.

Can I convert files larger than the limits shown?

Yes! We can convert files up to 100 GB. If you need to convert files larger than the standard plan limits, please contact us to discuss a custom enterprise plan tailored to your needs.

Still have questions? Contact our support team

Ready to integrate?

Sign up free in 30 seconds. Get your API key and start testing with sandbox mode.