RPE vs RIR: What Should You Record in Your Workout Log?

RPE and RIR are two ways to record how hard a set felt. RPE describes perceived effort on a scale; RIR describes how many more good reps you think you had left. Neither is a laboratory measurement, and neither needs to be. The practical goal is to make your workout history more comparable than load and reps alone.

The simple difference

• RPE asks, “How hard was that set?” On the common strength-training scale, a 10 is a maximal effort and lower numbers leave more room.
• RIR asks, “How many more clean reps did I have?” Zero RIR means no more reps were available with the intended standard.

The scales are related, but you do not need to memorize a perfect conversion. A rough practical relationship is:

RIR	Approximate RPE	Plain-language cue
3	7	Challenging, but clearly more there
2	8	Hard, with two clean reps left
1	9	Very hard; one more clean rep possible
0	10	Maximal effort for the intended standard

Treat this as a communication tool, not a promise of precision. Different exercises, technique standards, and fatigue can change how the same number feels.

Pick the scale you will actually use

RIR can be intuitive if you naturally think in remaining reps: “I had two more.” RPE can be easier if you think in effort: “That was an eight.” Both work when you apply them consistently.

Pick one for a training block. Switching between scales constantly makes the history harder to read. You can also use a plain-language backup note such as last rep slow when you are not confident in a number.

Record effort beside the set

The most useful format is compact:

• Lat pulldown — 80 kg × 8, 1 RIR
• Bench press — 70 kg × 10, RPE 8
• Cable curl — 20 kg × 12, last rep slow

Add a technique or context note only when it changes the interpretation: short rest, grip slipped, or range improved. The guide on what to write in a workout journal explains the rest of the useful fields.

Use effort to guide progression

Suppose you hit the same load and reps as last week. If the set moved from RPE 9 to RPE 8 with clean technique, that is useful progress even though the visible numbers did not change. If a set reached the rep target at RPE 10 after poor rest, adding load may not be the best next action.

That is why effort belongs beside a progressive-overload record. It gives context for whether to add a rep, add load, repeat, or make the session easier.

Do not turn effort into a verdict on your body

RPE and RIR are training notes, not medical tools. A high-effort set can be normal; pain, dizziness, or unusual symptoms deserve a different response. Stop and seek qualified guidance when appropriate rather than treating a journal number as clearance to continue.

Capture the note while it is fresh

Effort is easy to forget after the next exercise. You can say “two reps left” or “that was an eight” when you log a workout by voice, then review it later with the rest of the session. If you use Apple Watch during the workout, the sets-and-reps workflow keeps that quick capture close to the set.

The best scale is the one that helps you make a calmer, more comparable decision next time. Start with one number or one short phrase, use it consistently, and let the history do the work. The broader workout-journal system shows where effort fits alongside sets, reps, notes, and the next target.

Explore Gyornal to capture effort, reps, load, and notes in one session record instead of relying on memory after the workout ends.