With comprehensive data about people, places and events throughout history, Wolfram|Alpha can compute answers to countless complex questions about the past. Generate custom timelines of historical periods and notable events, convert numbers between ancient number systems, compute the changing value of money over time or explore and compare facts about inventions, people, military conflicts and more.
Convert numbers between various historical numeral systems.
Convert between current and historical values of US money.
Find and compare historical countries, kingdoms and other territories.
Search and compare data about notable inventions and their creators.
Look up or compare major historical periods.
Explore and visualize named family relationships.
Explore dates, commanders, troops and casualties.
Look up historical events and generate custom timelines.
Find current or historical political leaders by country and position.