ForHosting KIT · Developer Utilities

Two-leg trip time calculator

A two-leg trip time calculator answers the everyday planning question that a single average-speed box cannot: how long does the whole drive take when the first stretch and the second stretch run at different speeds, and what combined average speed does that imply for the journey as a whole.

● BetaFree · in your browser

Run — free How it works & API

Use it from WebAPIEmailTelegramApp soon

Enter the distance and speed of each sequential route leg in matching units—kilometres with kilometres per hour, or miles with miles per hour—and the tool divides each distance by its own speed, adds the two driving times, and reports total driving time plus the true combined average speed. Combined average speed is total distance over total time, not the arithmetic mean of the two speeds. Zero or negative speed or distance is rejected because a motionless or backwards leg cannot produce a finite travel time. The arithmetic is pure and deterministic: no maps vendor, no live traffic, no wall-clock dates. The free browser runner and the prepaid API share the same solve function, so itinerary drafts, classroom two-part journey problems, and fleet scripts always agree on the same rounded numbers.

How to use it

Enter your values in the form above. The tool checks them before calculating and shows the result on the same page.

Check your inputs

Use the labels and units shown next to each field. If something is missing or outside the allowed range, the page points to the field to fix.

Use it again or automate it

Use the browser tool for individual checks and the API when you need the same capability in an automated workflow.

What you can do with it

Get an answer now

Enter one set of values and see the result without building a spreadsheet or script.

Compare scenarios

Change one value at a time and rerun the calculation to understand what affects the result.

Automate repeated work

Use the API when the same calculation needs to run inside your product or workflow.

FAQ

How do I use this capability?

Complete the fields above and run it on this page. The form highlights anything that needs attention.

For developers — API access

Everything on this page is available programmatically. This section is for teams who want to wire it into their own systems; everyone else can just use the tool above.

API endpoint

POSThttps://api.kit.forhosting.com/travel/trip-time-two-legs

Prefer to automate it? One authenticated POST creates the task; the result comes back by webhook or a signed link. The same capability also runs here on the web, by email and from Telegram — and soon from our app too.

Call it from your stack

curl -X POST https://api.kit.forhosting.com/travel/trip-time-two-legs \
  -H "Authorization: Bearer $KIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"distance_1":180,"speed_1":90,"distance_2":30,"speed_2":30}'

const res = await fetch("https://api.kit.forhosting.com/travel/trip-time-two-legs", {
  method: "POST",
  headers: {
    "Authorization": `Bearer ${process.env.KIT_KEY}`,
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "distance_1": 180,
    "speed_1": 90,
    "distance_2": 30,
    "speed_2": 30
  })
});
const { task_id } = await res.json();

import os, requests

res = requests.post(
    "https://api.kit.forhosting.com/travel/trip-time-two-legs",
    headers={"Authorization": f"Bearer {os.environ['KIT_KEY']}"},
    json={
    "distance_1": 180,
    "speed_1": 90,
    "distance_2": 30,
    "speed_2": 30
},
)
task_id = res.json()["task_id"]

<?php
$res = file_get_contents("https://api.kit.forhosting.com/travel/trip-time-two-legs", false, stream_context_create([
  "http" => [
    "method"  => "POST",
    "header"  => "Authorization: Bearer " . getenv("KIT_KEY") . "\r\nContent-Type: application/json",
    "content" => '{"distance_1":180,"speed_1":90,"distance_2":30,"speed_2":30}',
  ],
]));
$task = json_decode($res, true);

body := bytes.NewBufferString(`{"distance_1":180,"speed_1":90,"distance_2":30,"speed_2":30}`)
req, _ := http.NewRequest("POST", "https://api.kit.forhosting.com/travel/trip-time-two-legs", body)
req.Header.Set("Authorization", "Bearer "+os.Getenv("KIT_KEY"))
req.Header.Set("Content-Type", "application/json")
res, _ := http.DefaultClient.Do(req)

Example request

{
  "distance_1": 180,
  "speed_1": 90,
  "distance_2": 30,
  "speed_2": 30
}

Example response

{
  "task_id": "tsk_a1b2c3d4e5f6a1b2c3d4e5f6",
  "type": "travel.trip_time_two_legs",
  "status": "queued",
  "_links": {
    "result": "/tasks/tsk_…/result"
  }
}

The API is asynchronous: the call returns a task_id immediately and the result arrives by webhook. Polling is capped at 1 req/s per task.

Pricing

Per request$0.002

Published price — no tokens, no invented credits. A failed task is never charged.

Limits

`max_distance`	1000000
`max_speed`	10000

Errors

HTTP	Code	Meaning
`401`	`unauthorized`	Missing or invalid API key.
`402`	`insufficient_balance`	Your balance doesn't cover the task price.
`404`	`unknown_type`	That task type doesn't exist.
`429`	`rate_limited`	Too many requests. Use the webhook instead of polling.

Read the full KIT documentation →