恆 is a traditional Chinese hanzi, listed here under the keyword “constant”. It is built from 忄 (heart) and 亙 (extend across). It appears as a component in 3 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “heart” + “extend across”. 恆 is among the results, together with every other character containing the same shapes.
Open 恆 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.