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Integrate 150+ calculators into your app with our simple REST API.
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 calculatorsBackground Removal API
Launch single-image removal, CSV batch jobs, WordPress/Shopify snippets, and Zapier/Make-style workflows.
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 |
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 limit info is returned in response headers: X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset. Exceeding the limit returns HTTP 429.
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Full OpenAPI 3.0 spec available for import into Postman, Insomnia, or code generation tools.
Download OpenAPI Spec →