Converting between units quickly

In this episode of the Language and Travel Hacking Podcast , I share my quick hacks for unit conversions while traveling. For temperatures, I use my “rule of five” system to convert between Celsius and Fahrenheit. It’s based on five key Celsius points—0, 10, 20, 30, and 40—and their easy-to-remember Fahrenheit equivalents, all tied to the number five. This shortcut isn’t perfect, but it’s simple enough to check the weather at a glance without pulling out a calculator or app. I also explain my trick for converting kilograms to pounds without multiplying by 2.2. Instead, I just double the number and add 10 percent, which makes the math fast and practical in real-life situations. These two systems help me adapt smoothly between measurement systems, and I hope they’ll be just as useful for you on your travels. If you need one-on-one language guidance, schedule a consultation session with Benny at languagehacking.com/chat . And don’t forget to check out the Fluent in 3 Months Bootcamp here ! Or you can follow me on all Social Media channels: Instagram: @irishpolyglot Thread: @irishpolyglot TikTok: @irishpolyglot

You can listen to Converting between units quickly online on Radio and Podcast. Open the player on this page to stream the available audio.

Converting between units quickly is an episode from Language Hacking by Benny Lewis.

This episode is 9:22 long.

This episode was published on Sep 11, 2025.

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