There's a unit toggle in Settings that switches your display between lbs and kg. It only changes how new weights are entered and labeled going forward. It doesn't convert the numbers in your existing history. If you've logged in one unit and then switch, your old sets display with the new unit's label on the same number you typed, so a lift logged as 100 shows as 100 in the other unit too, not converted to its actual equivalent.
What to do
- Pick your unit early and stick with it, since switching mid-history relabels past sets rather than converting them.
- If you do switch, treat older history under the new label as approximate, not literal, until you've logged enough fresh sets in the new unit.
- Check your plate calculator and bar weight settings after switching, since those are unit-specific too.
See units and scales for what else the unit setting affects.