Unit Conversions for International Travel

Traveling between countries that use different measurement systems can be confusing. The weather forecast says 25°C, the speed limit sign reads 120, your luggage must be under 23 kg, and fuel is sold by the liter. This page gathers every conversion a traveler needs, with quick reference tables you can bookmark for your trip.

Most Used Conversions

Quick Reference: Weather Temperature

CelsiusFahrenheitWhat to Expect
0°C32°FFreezing, ice, snow possible
10°C50°FCool, need a jacket
20°C68°FComfortable, light layers
25°C77°FWarm, short sleeves
30°C86°FHot, seek shade
35°C95°FVery hot, stay hydrated
40°C104°FExtreme heat, limit outdoor activity

Quick Reference: Driving Speed Limits

KM/H SignEquivalent MPHTypical Location
30 km/h19 mphSchool zones (Europe)
50 km/h31 mphCity streets
80 km/h50 mphCountry roads
100 km/h62 mphHighway (many countries)
120 km/h75 mphMotorway (Spain, Italy)
130 km/h81 mphMotorway (France, Germany advised)

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