The best replacement for calamansi is lemon.

The best alternatives to calamansi are rated as following:
★★★★★  lemon
★★★  calamondin
★★  lime
★  kumquat
★  yuzu
★  cumquat
★  kalamansi
★  dalandan
  lemon juice
  key lime

Your alternative for calamansi is not listed? Suggest!
Speaking about calamansi, one probably shouldn't forget about evaporated milk.

Other search terms related to calamansi and their ratings are:
★★★★★ evaporated milk
★★★★ tawas
★★ egg white
You have in mind a companion for calamansi and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of calamansi in all years. Click on graph for more.
calamansi
lemon
calamondin