5/3/1 Training Max Calculator: How to Set Your TM Correctly

The training max is the single most important number in 5/3/1. Every working set, every supplemental set, every percentage in the program flows from it. Set it correctly and the program runs smoothly for months. Set it too high and you’ll grind, stall, and eventually need to start over.

This guide covers what the training max is, how to calculate it, the 85% vs 90% debate, and when to reset.

What is a Training Max?

Your training max (TM) is a deliberately reduced version of your true one-rep max (1RM). In the 5/3/1 program, all working percentages are calculated from your TM, not your actual max.

The formula is simple:

Training Max = True 1RM x 0.85 (or 0.90)

If your best squat is 315 lbs, your TM at 85% is 268 lbs. Your heaviest prescribed set — 95% on week 3 — would be 95% of 268, which is 255 lbs. That’s roughly 81% of your true max. You’re never touching genuinely maximal weights during normal training.

This is intentional. Wendler designed the program so you always have room to push on the AMRAP set, maintain solid technique, and recover between sessions.

Example Training Max Calculations

Here’s what the TM looks like at both 85% and 90% for common strength levels:

The “Week 3 Top Set” column shows the heaviest weight you’d touch during the most intense week of a cycle. Notice how even at 90%, you’re working well below your true max.

Visualizing 1RM vs Training Max

85% vs 90%: Which Should You Use?

This is one of the most debated topics in the 5/3/1 community. Wendler’s recommendation has evolved over the years:

The Case for 85%

In his later writings (especially 5/3/1 Forever), Wendler has shifted toward recommending 85% for most lifters. The reasoning:

• More room on AMRAP sets. A lower TM means more reps on your top set, which means more volume at meaningful weights.
• Better technique under load. You’re never so close to your max that form breaks down.
• More sustainable long-term. You can run more cycles before needing a reset.
• The TM test passes easily. Wendler’s test is that you should be able to hit your TM for 3–5 strong, fast reps. At 85%, this is almost always true.

The Case for 90%

The original 5/3/1 prescription was 90%. Some lifters prefer it because:

• Heavier top sets. If you’re an experienced lifter who needs exposure to heavier weights, 90% keeps you closer to meaningful intensity.
• Less reliance on AMRAP reps. Some lifters don’t push AMRAP sets hard enough — a higher TM compensates by making the prescribed reps harder.
• Psychological preference. Some lifters just feel better moving heavier weights in training.

The Recommendation

If you’re not sure, start at 85%. You can always increase to 90% later if your AMRAP numbers are excessively high (consistently getting 10+ reps on week 3). You cannot easily undo the damage of starting too heavy and grinding through ugly reps for two cycles before realizing you need to reset.

How to Determine Your 1RM

You need a 1RM to calculate your TM. There are two approaches:

Option 1: Test It Directly

Warm up thoroughly, work up in singles, and find the heaviest weight you can lift with good form. This is the most accurate method but requires experience and ideally a spotter.

A sensible testing protocol:

1. Bar x 10
2. 50% x 5
3. 70% x 3
4. 80% x 1
5. 85% x 1
6. 90% x 1
7. 95% x 1
8. Attempt new max

Option 2: Estimate From a Rep Max

If you know you can bench 185 for 8 reps, you can estimate your 1RM using the Epley formula:

Estimated 1RM = Weight x (1 + Reps / 30)

For 185 x 8: 185 x (1 + 8/30) = 185 x 1.267 = 234 lbs

This works well for sets of 3–10 reps. Above 10 reps, the estimate becomes less reliable. For high-rep sets, consider it a rough guide and err on the conservative side.

The TM Test

Wendler recommends a simple test to verify your TM is set correctly:

You should be able to perform 3–5 strong, fast reps at your training max weight.

Not grind-it-out reps. Not reps where the bar slows to a crawl. Strong, fast, technically clean reps.

If you can’t hit 3 clean reps at your TM, it’s too high. If you’re getting 7+ reps at your TM, it might be too low (or you’re just very strong relative to your max — which is fine).

Run this test at the beginning of a new training cycle or whenever you suspect your TM has drifted.

When to Reset Your Training Max

After every cycle, you add 5 lbs to upper body TMs and 10 lbs to lower body TMs. Over time, this means your TM creeps closer and closer to your actual max. Eventually, it gets too high.

Signs your TM needs a reset:

• AMRAP reps are declining. If you got 8 reps at 85% two cycles ago and now you’re getting 5, the TM is drifting.
• You can’t pass the TM test. If 3 reps at your TM feels like a true max effort, reset.
• Form is breaking down. If your squats are turning into good mornings or your bench is hitching, the weight is too heavy.
• You dread training. Sub-maximal training should feel hard but manageable. If every session feels like a near-death experience, the weights are wrong.

How to Reset

1. Take your current TM
2. Multiply by 0.90 (reduce by 10%)
3. Round to the nearest 5 lbs
4. Use that as your new TM
5. Resume normal progression

For example, if your squat TM has reached 340 and you’re struggling:

• New TM = 340 x 0.90 = 306, round to 305 lbs
• Your week 1 top set (85%) is now 259 — comfortable enough to push the AMRAP hard

A reset isn’t starting over. You’re stronger than you were when you first set that TM — your AMRAP reps will prove it. You’ll blow through the lower weights and often surpass your previous rep records.

Common TM Mistakes

Starting With Your Actual Max

Your TM is not your 1RM. If you plug your true max into a 5/3/1 calculator as your training max, every percentage is too high. You’ll grind from day one and probably stall within two cycles.

Never Resetting

Some lifters view resets as failure. They’re not. Resets are a built-in feature of the program. Wendler himself recommends resetting proactively after 5–7 cycles even if you’re not struggling.

Rounding Up Instead of Down

When the math gives you an ugly number, always round down to the nearest 5 lbs. If your TM calculates to 287, use 285. The 2 lbs won’t matter for strength development, but consistently rounding up will compound over multiple cycles.

Using Different TMs for Different Templates

Your training max is your training max regardless of whether you’re running BBB, FSL, SSL, or any other template. The supplemental work percentages are calculated from the same TM as your main work.

Calculating Your TM: Step by Step

1. Determine your 1RM for each of the four lifts (test or estimate)
2. Multiply by 0.85 (recommended) or 0.90
3. Round down to the nearest 5 lbs
4. Run the TM test — 3–5 strong reps at that weight
5. If the test fails, reduce by another 5% and retest
6. Record your TMs — you’ll need them for every workout

If doing the math for four lifts across three weekly percentages sounds tedious, Train531 calculates your training max from your rep history, generates every working set automatically, and flags when your TM needs a reset based on AMRAP performance trends.