Timezone difference
Compare UTC offsets before booking or scheduling calls across time zones. Shows the gap in hours and flags whether daylight saving affects either location at that point in the year.
Travel
Travel converters
Travel tools for packing and planning: luggage weight limits, distance conversion, timezone comparison, trip duration and currency. Built for checking baggage rules and planning itineraries without friction.
Last updated: June 2026
Tools in this section
Travel planning comes down to a handful of repeat questions: will the bag pass the airline limit, what time is it where you are going, how far is the drive, and how many days is the trip. These tools answer each of those so you can settle the logistics before you book, pack or set off.
Packing weight calculator
Add clothing, shoes and accessories individually to see a running total against the airline limit. Catches an overweight bag before the check-in desk rather than at it.
KG to LBS
Convert baggage allowances between kilograms and pounds. Most European carriers cap checked bags at 23 kg (50.7 lb); US and Canadian carriers often state limits in pounds.
KM to miles
Convert distances and speed limits when driving in the UK, USA or other mph countries. Road signs switch units at the border; one mile is 1.609 km.
Date difference
Count the exact number of days, weeks or months between two dates. Useful for confirming trip length, checking visa duration limits, and planning multi-week accommodation.
Tyre size calculator
Decode the code on a tyre sidewall (for example 205/55 R16) to understand section width, profile height, and rim diameter before replacing or comparing options.
Airline baggage limits at a glance
Weight limits vary by airline and fare class, but the numbers below represent the most common thresholds. Always verify with your specific carrier before travel, especially on low-cost airlines where the rules change frequently and differ by fare type.
| Bag type | Typical limit (kg) | In pounds | Notes |
|---|---|---|---|
| Checked bag (standard) | 23 kg | 50.7 lb | Most major carriers, economy class |
| Checked bag (upper limit) | 32 kg | 70.5 lb | Maximum on most carriers before rejection |
| Cabin / carry-on | 7 to 10 kg | 15 to 22 lb | Low-cost carriers enforce size and weight strictly |
| Personal item | usually no limit | - | Laptop bag, handbag; must fit under the seat |
The packing weight calculator on this page lets you add items individually to track the running total before you reach the airport. Weigh clothing and shoes rather than estimating; a pair of boots can be 1 to 1.5 kg alone.
Driving and distances abroad
Speed limit signs use km/h in most countries and mph in the UK and USA. One mile is 1.609 km, so a 100 km/h motorway limit is about 62 mph and a 50 km/h urban limit is about 31 mph. The conversion is close enough to "divide km/h by 1.6" for a quick mental check while driving.
| Speed limit (km/h) | Speed limit (mph) | Typical context |
|---|---|---|
| 30 km/h | 19 mph | Residential / school zones in Europe |
| 50 km/h | 31 mph | Urban roads in most European countries |
| 80 km/h | 50 mph | Rural roads outside built-up areas |
| 100 km/h | 62 mph | Dual carriageways, many motorways |
| 130 km/h | 81 mph | Motorways in France, Italy, Spain |
Fuel is sold by the litre in Europe and efficiency is quoted in litres per 100 km. The km to miles converter handles any distance. The date difference calculator counts trip length in days, which is useful for visa duration checks and accommodation planning.
Planning travel across measurement systems
Speed limits and distance signs are the first thing that changes at a border. North America, the UK and a handful of other countries post limits in mph; virtually everywhere else uses km/h. A 100 km/h motorway limit is 62 mph; a 30 mph urban zone is 48 km/h. The relationship is close enough that a rough mental shortcut (multiply km/h by 0.6, or mph by 1.6) gives a usable estimate without a calculator.
Temperature causes the most confusion because the two scales differ in both the starting point and the step size. 0 degrees Celsius is 32 Fahrenheit, and each Celsius degree is 1.8 Fahrenheit degrees, so the gap widens fast. A weather forecast of 25 C is a warm 77 F; 40 C is a hot 104 F. The crossover where both scales read the same number is -40 degrees. When reading a destination's weather, knowing the local scale and converting before packing is the simplest way to avoid arriving underdressed.
Currency exchange rates change by the hour, so a converter can only give the mid-market rate at the moment you check. Travel cards and bank exchanges apply a spread on top of that, typically 1-3 percent, and airport exchange desks often add more. For trip budgeting, using the live mid-market rate and adding a buffer of 3-5 percent gives a realistic figure. For larger purchases abroad, checking the actual card transaction afterward against what the converter showed reveals how much the spread cost.
Frequently Asked Questions
How do I make sure my luggage is not overweight?
Weigh each bag, or use the packing weight calculator to add items up, then compare against your airline's limit. Checked bags are often capped at 23 kg (about 50 lb) and cabin bags at 7 to 10 kg.
How do I work out the time difference between two places?
Compare their UTC offsets with the timezone difference tool. Keep in mind that daylight saving time shifts some zones by an hour for part of the year, which changes the gap.
What is the cabin baggage weight limit?
It varies by airline, but is typically 7 to 10 kg with size limits as well. Always check your specific carrier and fare, because budget airlines tend to be stricter.
How many kilometres is a mile when driving abroad?
One mile is 1.609 km and one km is 0.621 miles, so a 100 km/h limit is about 62 mph. The km to miles tool converts any distance for navigation and fuel planning.
Why decode a tyre size before buying?
The code on the sidewall encodes the width, profile and rim diameter. Matching it ensures the replacement fits the wheel and keeps the speedometer accurate. The tyre size calculator reads the code for you.
How do I convert km/h to mph quickly in my head?
Divide km/h by 1.6 for a close estimate, or multiply by 0.621 for the exact value. A 120 km/h motorway limit is about 75 mph. The km to miles converter works for speeds and distances interchangeably.
What is the standard maximum size for a carry-on bag?
The most common size limit is 55 x 40 x 20 cm, giving a total linear dimension of about 115 cm. Low-cost carriers use stricter dimensions. Check your airline's current policy before travel, as rules change by route and fare.
How do I calculate how many days my trip is?
The date difference calculator gives the exact count including or excluding the start and end dates. It also shows weeks and months, which is useful for visa duration checks and multi-week accommodation planning.