Workout Log

Logging sets

• Type an exercise name (or pick from previous exercises), enter weight, unit, and reps, then click Add.
• The date defaults to today. Change it to back-fill a past workout.
• Each row in the history represents one set. Log multiple sets by clicking Add repeatedly.

Personal records

• The PR section shows the heaviest weight lifted for each exercise, along with the rep count for that set.
• A new PR is detected whenever you log a weight heavier than any previous set for that exercise.

Estimated 1RM

• The Est. 1RM column uses the Epley formula: 1RM = weight x (1 + reps / 30).
• This gives an approximation of your one-rep max from a submaximal set. It is most accurate for sets of 2-10 reps.

Progress chart

• Select an exercise and a metric. Max Weight plots the heaviest single set per date. Est. 1RM plots the highest estimated 1RM per date. Session Volume plots total weight lifted (sets x reps x weight) per date.
• The chart only shows dates where you logged at least one set for the selected exercise.

Export

• Click Export CSV to download all sets as a spreadsheet-compatible file.

All data is stored only in your browser (localStorage). Nothing is sent to a server.

You can embed this util on your own site as a widget. Adding ?embed=1 to the URL loads a compact version with just the tool itself; no header, menu, or documentation. Paste this snippet into your HTML:

Copy snippet Adjust the height to taste.