Time Duration Calculator API
Calculate the duration between two times in hours, minutes, and seconds.
Fast & Accurate
Get precise results instantly.
Easy Integration
Simple REST API with JSON response.
Developer Friendly
Clear docs and SDK examples.
Free to Start
5,000 free requests/month.
Endpoint
All requests should be made to the following endpoint:
POST https://api.tools.town/v1/date/duration Authentication
This endpoint requires an API Key. Include your API key in the request header.
Request Parameters
Send a POST request with JSON body.
| Parameter | Type | Required | Description | Example |
|---|---|---|---|---|
mode | string | ✓ | sum or diff. | sum |
durations | array | ✓ | Durations to add (HH:MM:SS strings). | ["01:30:00","02:15:00"] |
Example Request
curl -X POST "https://api.tools.town/v1/date/duration" \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"mode": "sum",
"durations": ["01:30:00","02:15:00"]
}' Example Response 200 OK
{
"success": true,
"data": {
"totalSeconds": "0",
"formatted": "string",
"hoursDecimal": "0"
}
} Error Codes
| Code | Meaning |
|---|---|
| 400 | Bad Request — missing or invalid parameter |
| 401 | Unauthorized — API key missing or invalid |
| 429 | Rate limit exceeded — free tier: 5,000 requests/month |
| 500 | Internal Server Error — try again or contact support |