How do I show the molecular weights of proteins in daltons (Da) instead of kilodaltons (kDa)?

SnapGene shows the molecular weight of a selected part of a protein in the "selection bar".
Show Preferences

Click SnapGene → Preferences (macOS) or Edit → Preferences (Windows or Linux), and select "Proteins" in the sidebar.
Check the box labeled "Show molecular weights in Daltons in the selection bar".

Precise molecular weights of the selected region will now be shown in daltons (Da).