Leave Time Optimizer

⚠ Setup required. Open this file in a text editor and paste your Google Maps API key into the API_KEY variable near the top. You also need these 4 APIs enabled in Google Cloud Console:

Routes API — for traffic-aware forecasts
Maps JavaScript API — loads the map
Places API (the classic one, not "New") — address autocomplete
Directions API — draws the route on the map

Route & Timing

Origin

Destination

Date

Arrive by

Buffer

Mode

Relaxed

If traffic is light

Usual

Typical traffic

Important

If traffic is heavy

by Jeremy Lee — 2026

Ready when you are.

Fill in the route and timing on the left, then start monitoring.

Leave at exactly the right time.