Fuel Cost & Trip Calculator

Plan your driving costs before you leave with this simple fuel cost and trip calculator. Enter the one-way distance, your vehicle's fuel efficiency, and the current fuel price to instantly see how much fuel you need and the total trip cost. Toggle "Count Return Leg" to automatically double the distance for a commute or return drive, and add extra costs like tolls or parking for a true trip budget. The compact result view shows the estimated total up top, plus derived metrics — total distance, fuel needed, fuel cost, cost per distance, and the return-leg cost — so you can evaluate a trip at a glance. Features: • Quick Starts — tap a preset (Commute, Weekend Drive, Airport Run, Delivery) to fill the form instantly • Round-trip toggle that calculates both legs • Extra costs for tolls, parking, and fees • Cost-per-distance breakdown • Save Scenarios with a full snapshot and reload them anytime • Works offline, no account required • Light and dark themes, English and Chinese