We do have some of those tools, at DuckDuckGo they are called "Instant Answers."
For example the query: "2 lb to kg" will bring you to this results page https://duckduckgo.com/?q=2+lb+to+kg&ia=answer
You can see all our Instant Answers here: https://duck.co/ia
If something isn't triggering for you - let us know with the feedback tool on the site!
Disclaimer: DDG staff.
Get that 'in last year' filter already, DDG. I think I've complained about this through feedback before.
We do have some of those tools, at DuckDuckGo they are called "Instant Answers."
For example the query: "2 lb to kg" will bring you to this results page https://duckduckgo.com/?q=2+lb+to+kg&ia=answer
You can see all our Instant Answers here: https://duck.co/ia
If something isn't triggering for you - let us know with the feedback tool on the site!
Disclaimer: DDG staff.