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Consciously or unconsciously, we ask ourselves "how long" type of questions dozens of time each day. Whether it is to satisfy our own curiosity, enrich a conversation, organize our dayly agenda, or plan for the future, knowing how long things took or will take is key in our fast-phased world.

Here at HowLong.info we've put together an extensive, evergrowing database of answers to these type of questions. The simple and straightforward answer to whichever "how long will it take" question you might be asking yourself today, with no bluff, no ornaments, just the straight-to-the-point answer you are looking for in order to keep going.


How long did World War 2 last?

6 years and 1 day

World War 2 lasted from 1 September 1939 to 2 September 1945, making it a total of six years. It was the deadliest conflict in human history, with an estimated 50 million people killed worldwide. The war began when Nazi Germany invaded Poland, and it ended with the surrender of Germany in May 1945 and Japan’s surrender in August 1945.

World War 2 was a global conflict involving many countries from around the world, including the Allied Powers and the Axis Powers. The war saw major military campaigns in Europe, North Africa, Asia and the Pacific, as well as numerous technological advancements that would shape warfare for decades to come. It also marked the beginning of the Cold War between the United States and the Soviet Union.