You are staring at a map trying to figure out whether it makes more sense to drive from Austin to New Orleans or fly. The straight-line distance looks short, but the actual driving route is different. Then there is the cost: gas, tolls, possibly a hotel stop versus a one-hour flight plus airport time plus baggage fees. And if you are crossing time zones, you need to factor in jet lag and lost productivity on the other end.
Trip planning involves a surprising amount of math. Distance, time, fuel, flights, accommodation, currency exchange, time zones. Most people bounce between Google Maps, airline search engines, and mental arithmetic to piece it together.
The travel tools on AllTools handle this in your browser. The Distance Between Cities calculator gives you both driving and flying distances. The Flight Time Calculator estimates how long you will be in the air. The Travel Cost Calculator helps you budget for fuel, flights, and lodging. And the Jet Lag Calculator tells you what to expect when you cross multiple time zones. Everything runs locally in your browser — no data leaves your device, no account required.
Distance Between Cities Calculator
The first question in any trip plan is straightforward: how far is it? But “how far” has two answers that can be wildly different.
Straight-line vs driving distance
The straight-line (great-circle) distance is the shortest path between two points on Earth’s surface. It is what a plane flies. The calculation uses the Haversine formula, which accounts for Earth’s spherical geometry. Driving distance is the actual road distance, which is almost always longer — sometimes dramatically so due to mountains, bodies of water, and highway layouts.
| Route | Straight-line | Driving | Difference |
|---|---|---|---|
| New York to Boston | 306 km (190 mi) | 346 km (215 mi) | +13% |
| Los Angeles to Las Vegas | 367 km (228 mi) | 435 km (270 mi) | +19% |
| London to Edinburgh | 534 km (332 mi) | 666 km (414 mi) | +25% |
| Istanbul to Athens | 561 km (349 mi) | 1,090 km (677 mi) | +94% |
| Mumbai to Delhi | 1,153 km (717 mi) | 1,420 km (882 mi) | +23% |
The Istanbul-to-Athens difference is extreme because driving requires going around the Aegean Sea, nearly doubling the distance. The Distance Between Cities tool shows both numbers so you can make informed decisions about whether to drive or fly.
When to drive vs fly
- Under 300 km / 200 miles: Driving is almost always faster when you factor in airport time.
- 300-800 km / 200-500 miles: The break-even zone. Compare total door-to-door time including airport check-in, security, and travel to the airport.
- Over 800 km / 500 miles: Flying is usually faster unless airports are inconvenient or flights are indirect.
Flight Time Estimator
The Flight Time Calculator takes the great-circle distance between two cities and divides it by an average cruising speed. Commercial jets typically cruise at 800-900 km/h (500-560 mph). The tool uses a realistic average that accounts for takeoff, climb, descent, and landing phases.
Factors that affect actual flight time
Wind patterns. The jet stream can add or subtract significant time. Eastbound flights across the Atlantic are typically 30-60 minutes shorter than westbound flights. A New York to London flight averages about 6.5 hours; London to New York averages about 7.5 hours.
Routing. Air traffic control routes, restricted airspace, and weather avoidance all affect the actual path flown.
Aircraft type. A Boeing 787 cruises faster than a turboprop regional plane. Long-haul flights on modern widebody aircraft are closer to the calculated estimate.
Keep in mind that a “one-hour flight” often means 4-5 hours of total travel time once you add getting to the airport, check-in, security, boarding, and travel from the arrival airport. This is why driving remains competitive for distances under 500 km.
Travel Cost Calculator
Distance and time are half the equation. The other half is money.
Fuel cost estimation
The Travel Cost Calculator estimates driving fuel costs based on three inputs: distance, your vehicle’s fuel efficiency, and the local fuel price.
A compact car averaging 7 L/100km (34 mpg) will cost roughly half as much as an SUV averaging 12 L/100km (20 mpg) over the same distance. Enter your actual vehicle’s efficiency for an accurate estimate.
Fuel prices vary enormously by region. Gas in the United States averages around $3.50 per gallon; in the UK it is closer to 1.50 GBP per liter (about $7 per gallon equivalent). For currency conversions, use the Currency Converter.
Comparing driving vs flying costs
Here is a framework for a hypothetical 800 km trip:
| Cost factor | Driving | Flying |
|---|---|---|
| Fuel / ticket | $80 (at 8L/100km, $1.50/L) | $150-300 (economy) |
| Tolls | $15-50 (varies by route) | — |
| Airport transfer | — | $40-80 (round trip) |
| Parking at destination | $0-30/day | — |
| Car rental at destination | — | $40-80/day |
| Time cost | 8-10 hours | 4-6 hours (door-to-door) |
Driving is often cheaper for solo travelers or families (one fuel cost covers all passengers). Flying becomes more cost-effective per person when you factor in time savings, especially for business travelers.
For flight budgeting, book 1-3 months ahead for domestic routes and 2-8 months for international. Tuesdays and Wednesdays tend to have lower fares. Always add baggage fees to your comparison with budget airlines.
Jet Lag Calculator and Recovery Tips
Crossing time zones disrupts your circadian rhythm. The Jet Lag Calculator estimates the severity based on the number of time zones crossed and the direction of travel.
Your body adjusts at about 1-1.5 time zones per day. Cross 6 zones (New York to London) and you are looking at 4-6 days to fully adjust. Eastward travel is harder because you need to fall asleep earlier; westward travel (staying up later) is easier for most people. Flights within the same time zone cause negligible jet lag regardless of distance.
| Zones crossed | Severity | Recovery time | Key strategy |
|---|---|---|---|
| 1-2 | Mild | 1 day | Adjust on arrival |
| 3-5 | Moderate | 2-4 days | Shift sleep schedule 1-2 days before departure |
| 6-8 | Significant | 4-6 days | Start adjusting 3 days early, use light exposure |
| 9-12 | Severe | 6-10 days | Consider a stopover, aggressive light/dark management |
Before departure: Shift your sleep schedule 2-3 days before travel. Use the Timezone Converter to align with your destination’s clock.
After arrival: Get sunlight exposure in the morning (destination time) to reset your circadian clock. Avoid napping longer than 20 minutes. Eat meals at local times even if you are not hungry. Exercise lightly to boost alertness.
Comparison Table
| Feature | AllTools | Google Maps | Rome2Rio | TripAdvisor |
|---|---|---|---|---|
| Distance calculator | Yes | Yes | Yes | No |
| Flight time estimate | Yes | No | Yes (via schedules) | No |
| Fuel cost estimate | Yes | No | Partial | No |
| Trip budget tool | Yes | No | Yes (fare estimates) | Yes (hotel pricing) |
| Jet lag calculator | Yes | No | No | No |
| Currency converter | Yes (separate tool) | No | No | No |
| Privacy | Full (browser-only) | Tracks location | Account optional | Account required |
| Price | Free | Free | Free (basic) | Free (with ads) |
| Account required | No | No | Optional | Yes (for features) |
AllTools is the right choice when you want quick calculations without sharing your travel data with a platform. Google Maps excels at turn-by-turn routing and real-time traffic. Rome2Rio is excellent for multi-modal transport options (train + ferry + bus). TripAdvisor is the go-to for hotel reviews. AllTools handles the calculation layer; use other platforms for booking and navigation.
FAQ
How accurate is the distance calculator?
The straight-line distance uses the Haversine formula, accurate to within 0.3% of the true ellipsoidal distance for any two points on Earth. Driving distances are estimates based on typical routing and may differ from your actual route due to road construction, detours, and route choices.
Can I plan multi-city trips?
Calculate distances and costs between each pair of cities separately and add them up. Enter City A to City B, note the result, then City B to City C. For unit conversions between kilometers and miles, use the Unit Converter.
How do I estimate fuel costs for a road trip?
Enter three values into the Travel Cost Calculator: driving distance, your vehicle’s fuel efficiency (L/100km or mpg), and fuel price per liter or gallon. The tool calculates the total. Look up fuel prices along your specific route for the most accurate estimate.
Do the tools work offline?
Yes, after the initial page load. The calculations run entirely in your browser using JavaScript, so you can disconnect and the tools continue working — useful when traveling with limited connectivity.
How does the jet lag calculator determine recovery time?
It uses the number of time zones crossed and the direction of travel. Eastward travel is weighted as harder to recover from based on circadian rhythm research. The general rule is one day per 1-1.5 zones crossed eastward, and one day per 1.5-2 zones westward.
Can I convert currencies for international trip budgeting?
Yes. Use the Currency Converter alongside the travel cost calculator. Enter trip costs in the local currency of your destination, then convert to your home currency. Add a 3-5% buffer for rate fluctuations and exchange fees.
Plan Your Next Trip
Open the Distance Between Cities calculator to see how far your destination is. Estimate your flight time with the Flight Time Calculator. Budget the trip with the Travel Cost Calculator. And if you are crossing time zones, check the Jet Lag Calculator so you know what to expect on arrival.
For related tools: convert currencies for international trips, check time zones across your route, convert units between metric and imperial, or explore the full Travel tools category. Have a suggestion for a new travel tool? Let us know.
