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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 it take to build the pyramids?

About 20 years
for the famous Great Pyramid at Giza

The exact timeline for the construction of the pyramids is still unknown, but it is estimated that the Great Pyramid of Giza was built in about 20 years. Historians believe that the pyramid was constructed using an encircling transport or ramp system and tens of thousands of workers who moved large stones from a nearby quarry and dragged them up to their respective positions.

Although the exact timeline is unknown, it is estimated that the other two pyramids at Giza were constructed over a shorter period of time than the Great Pyramid, likely in less than 10 years.

The remaining pyramids throughout Egypt are believed to have been built over periods ranging from several months up to a couple of decades.