Travel & geography
328 travel and geography tools: distances between places, coordinates, fuel and trip costs, weather indices and local time. Plan a route or check a figure before you leave, free in your browser.
Travel distance unit converter
100 statute miles are exactly 160.9344 km, because a mile is fixed at 1.609344 km and a nautical mile at 1.852 km.
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ETA calculator
Leave at 09:30 with 180 km to go at an average of 90 km/h and you arrive at 11:30: the calculator adds the travel time to your leave time and gives an arrival…
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MPG to L/100km converter
30 US miles per gallon is 7.84 litres per 100 km, and the same rating appears in imperial mpg and km per litre at once.
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Luggage linear inches calculator
A 22 × 14 × 9 inch carry-on measures 45 linear inches, or 114.3 cm, which just meets a 45-inch limit.
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Luggage volume calculator
A 55 × 40 × 20 cm cabin bag has a rectangular packing volume of 44 litres. Enter the three edges in centimetres, inches, millimetres or metres to get litres and…
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Airline miles value calculator
An award costing 25,000 miles is worth the cash fare plus taxes it replaces, and the tool turns that into cents per point.
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Driving range remaining calculator
Twelve gallons left in a car that averages 30 mpg means about 360 miles of range. The same multiplication works for litres with km per litre or kWh with miles…
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Road trip time calculator
Drive 450 km at an average of 90 km/h and you spend 5 hours at the wheel; add 1.5 hours of breaks and you arrive 6 hours 30 minutes after leaving.
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Speed unit converter
100 km/h comes out as 62.137119223733 mph, with the same speed also shown in knots and metres per second.
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Timezone offset difference
When it is 15:30 at UTC+2, it is 08:30 at UTC−5, seven hours behind. Enter two fixed offsets and a local time to get the gap between the clocks and the matching…
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Tire pressure by load calculator
A tire rated 1,500 lb at 35 PSI that carries 1,200 lb needs about three quarters of that pressure: the load ratio, 0.8, is raised to the power 1.25.
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Road trip cost split
With 4 people in the car, each pays a quarter of fuel plus tolls, and the result shows that share split into its fuel part and its toll part.
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Trip fuel cost estimator
A 300-mile trip at 30 mpg needs 10 gallons; multiply by your pump price and you have the fuel budget.
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Walking time estimator
A 5 km walk at 5 km/h takes one hour, or 60 minutes. Enter the distance and your average walking speed in km/h, mph or any matching pair to see how long a city…
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Daily trip budget calculator
A 2400 budget for eight days gives 300 a day; with 50 % lodging, 30 % food and 20 % activities, that is 150, 90 and 60 per day.
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Calculate trip fuel cost from distance, efficiency and fuel price
A 420-mile trip in a car doing 35 miles per gallon uses 12 gallons, and at 3.75 per gallon the fuel costs 45.
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Feels-like temperature calculator
One feels-like number whatever the season: −5 °C with a 25 km/h wind feels like −12.31 °C by wind chill, while hot, humid air switches to the heat index…
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EV Road Trip Charging Stops Calculator
Work out how many times you need to charge on the road: a 620-mile trip in a car with 300 miles of range and a 20% buffer needs 2 stops, splitting the route…
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Cash denomination calculator
A total of 6 built from pieces worth 4, 3 and 1 needs just two pieces, 3 + 3, where taking the largest first would use three.
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Frequent flyer miles value calculator
25,000 miles for a flight you would otherwise buy for 425 works out to 1.7 cents per mile, 13.33 % above a 1.5-cent target, so it rates good.
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Hotel price per night calculator
A five-night stay totaling 847.35 comes to 169.47 per night once every tax and fee is in, the figure that really compares with other listings rather than the…
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Check itinerary time conflicts and overlapping activities
A museum visit from 09:00 to 11:00 and a walking tour starting at 10:30 overlap by 30 minutes, while lunch at 12:00, right after the tour, does not.
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Estimate jet lag adjustment days
Six time zones eastward means about six days to adjust, while the same six zones westward take about four, because advancing your body clock is harder than…
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Check passport validity for a travel date
Returning on 20 September 2026 means your passport must be valid until at least 20 March 2027; one expiring on 20 April 2027 passes with 212 days to spare.
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Road trip fuel stop calculator
A 1,000-mile drive with 400 miles of range and a 20 % reserve means filling up every 320 miles: three stops after leaving with a full tank.
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Estimate Parking Spaces Needed for a Building
A 50,000-square-foot building at four spaces per 1,000 square feet needs 200 spaces, and any fraction is rounded up to a whole stall.
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Annual commute time calculator
A 30-minute one-way commute over 240 work days adds up to 240 hours a year, because each day counts the trip to work and the trip home.
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Andoyer–Lambert distance
Along the equator, from longitude 0° to longitude 1°, the Andoyer–Lambert distance on the WGS84 ellipsoid is 111319.491 m.
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Hammer projection calculator
Project a latitude and longitude onto the Hammer equal-area world map, or turn x and y back into coordinates: the point at latitude 0 and longitude 0 lands at…
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Horizontal sextant angle distance
Turn a horizontal sextant angle between two charted marks into distances: with a baseline of 100 between A and B and an angle of 60°, the circle through both…
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Polaris latitude calculator
An observed Polaris altitude of 40° with corrections of 0.5, -0.1 and 0.05 gives a latitude of 40.45°.
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Calculate parking fee by duration
Park for 5.5 hours at 4 for the first hour and 2.5 for each extra started hour, and you are billed 6 hours for 16.5, under an 18 daily cap.
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Multi-stop route total distance calculator
Depot to Museum 4.8 km, Museum to Hotel 3.25 km and back to the Depot 6.1 km make a 14.15 km route, with every leg listed.
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Bike share trip cost calculator
A 24-minute ride by a member with 10 included minutes bills 14 minutes, plus the unlock fee that still applies, so you see the fixed and per-minute parts of the…
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Calculate EV charging session cost from kWh, rate, and fees
42.5 kWh at the charger's rate, plus a session fee and an idle fee, becomes one total with the energy cost and the extra fees shown apart, so a low advertised…
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Rideshare fare estimate
With a 2.5 base, 1.25 per mile and 0.3 per minute, an 8.4-mile ride lasting 22 minutes comes to 19.6 before surge: 10.5 for distance and 6.6 for time.
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Humidex calculator
At 30 °C with a dew point of 15 °C, the humidex comes out nearly 4 degrees above the thermometer reading, so the day feels noticeably hotter.
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Wind chill calculator
Find how cold exposed skin feels in Fahrenheit: 30 °F with a 10 mph wind feels like 21.2 °F, using the standard National Weather Service formula for cold, windy…
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Classify an Air Quality Index Category and Health Guidance
An AQI of 137 falls in the 101–150 band, unhealthy for sensitive groups: people with heart or lung disease, older adults and children should cut prolonged…
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Convert barometric pressure units
Standard sea-level pressure of 1013.25 hPa is also 1013.25 mb, about 29.921 inHg and 760 mmHg. Enter a reading in any of the four units and see all four at…
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Simplified reference evapotranspiration estimate for irrigation
At 25 °C, a 2.5 m/s wind and 18 MJ/m² of solar radiation per day, the estimate is close to 12 mm of water lost per day.
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Frost and freeze risk check
A forecast low of 2 °C (35.6 °F) means no frost risk, 30 °F is light frost and 25 °F is a hard freeze: one overnight low, one clear label for covering plants or…
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Hurricane category by wind speed
Enter a sustained wind and get its hurricane category: 100 mph is Category 2, the 96–110 mph band, with a plain description of the damage it typically brings.
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Beaufort wind scale lookup
Put a wind reading into words people know: 10 m/s is Beaufort force 5, a Fresh breeze, with many whitecaps at sea and small trees in leaf swaying on land.
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Pollen Count Severity Category Classifier
A tree pollen count of 95 grains per cubic metre is high, because the tree scale turns high at 90 and very high at 1,500.
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Snow-to-liquid ratio estimator
Turn the temperature during snowfall into a snow-to-liquid ratio: at 25 °F the estimate is 9.3:1, with a practical range of 7.4 to 11.2, so you can multiply a…
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Check flight layover connection time
A 120-minute stop without changing terminals rates comfortable, 60 minutes above the 60-minute minimum connection time.
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Airline luggage weight limit checker and overweight fee tier
A 27.4 kg bag against a 23 kg allowance is 4.4 kg over, which lands in the first overweight band of up to 5 kg.
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Visa requirement check
A US passport going to Mexico needs no visa for stays of up to 180 days, according to a small fixed reference table of 25 country pairs.
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Find overlapping meeting hours across time zones
Berlin (UTC+2) and New York (UTC−5), both working 9 to 17, overlap only from 14:00 to 15:00 UTC: 16:00 in Berlin, 9:00 in New York.
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Ex-meridian reduction latitude
An observed altitude of 50° on the meridian, with a declination of 10°, gives latitude 50° and a reduction of 0′.
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Haversine great-circle distance
Measure the great-circle distance between two coordinates with the formula shown next to the result: New York to London comes out at 5570.229874 km, with…
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Central angle between two latitude longitude points
New York and London are 50.094211560061° apart as seen from the centre of the Earth, or 0.874308927913665 radians.
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Nearest point on polyline
For the point 40.73, -74.01 and a three-vertex route, the closest spot on the line is 40.7227030704, -73.9972969296, on the second segment.
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Point to infinite great-circle line distance calculator
The point at latitude 10, longitude 20 is 10° of arc, or 1111.950802335 km, from the great circle through 0, 0 and 0, 90.
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Bearing to 32-point compass box
A bearing of 11.25° is NbE, North by East, one of the 32 points of the classical compass rose. Enter any heading in degrees to get its traditional label, the…
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Final bearing at destination
Following the great circle from 51.5074, -0.1278 to 40.7128, -74.006, you arrive heading 231.212617°, or SW.
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Grid bearing from true
Convert a true bearing to a grid bearing by removing the meridian convergence; a true 45° with 1.25° of convergence gives a grid 43.75°, and the reverse back to…
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Polar coordinate plane distance
Two points at radius 3, angle 0° and radius 4, angle 90° are exactly 5 apart: the law of cosines gives the straight-line distance between polar points without…
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Relative bearing from heading
See where a target lies from your bow: with a heading of 350° and the target at 45° true, the relative bearing is 55°, forward on the starboard side.
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