API Status: Operational

Developer API

Integrate 150+ calculators into your app with our simple REST API.

Already have an account? Open your developer dashboard to manage keys and usage.

Quick Start

const res = await fetch('https://calculatorapp.me/api/v1/calculators?category=Health&limit=10', {
  headers: { 'X-API-Key': 'YOUR_API_KEY' }
});
const data = await res.json();
logger.info(data.data); // Array of calculators

Background Removal API

Product photo API docs, CSV jobs, and ecommerce workflow snippets

Launch single-image removal, CSV batch jobs, WordPress/Shopify snippets, and Zapier/Make-style workflows.

API Endpoints

List all calculators with metadata, FAQs, and categories.

Parameter	Type	Description
`category`	string	Filter by category (e.g., "Health", "Finance")
`limit`	integer	Max results (1-100, default 50)
`offset`	integer	Skip N results for pagination
`search`	string	Search by name or description

Authentication

Pass your API key via the X-API-Key header. Anonymous access is allowed with lower rate limits (30 req/min, no monthly tracking).

Rate Limits

Rate limit info is returned in response headers: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset. Exceeding the limit returns HTTP 429.

API Plans

Free

✓10,000 requests/month
✓100 req/minute
✓2 API keys
✓All endpoints
✓Community support

Get Started

Pro

$29/mo

✓100,000 requests/month
✓500 req/minute
✓5 API keys
✓Priority support
✓Usage analytics

Upgrade to Pro

Enterprise

Custom

✓1M+ requests/month
✓2,000 req/minute
✓20 API keys
✓Dedicated support
✓SLA guarantee

OpenAPI Specification

Full OpenAPI 3.0 spec available for import into Postman, Insomnia, or code generation tools.

Download OpenAPI Spec →