Fractional Weight Plates: What They Are and When to Use Them

At some point in a lifting career, adding 5 lbs to the bar becomes too much to do every session. That’s when fractional plates become essential. They’re small, they’re inexpensive relative to the difference they make, and most serious lifters eventually wish they’d bought them sooner.

What Are Fractional Plates?

Fractional plates — also called micro plates or change plates — are small weight plates designed for loading in increments smaller than the standard 2.5 lb minimum. They typically range from 0.25 lb to 2.5 lbs (or 0.125 kg to 1.25 kg in metric sets). Like full-size plates, they have a 50 mm (2-inch) Olympic center hole and fit on any standard Olympic barbell.

The most common fractional plate sets include pairs of: 0.25 lb, 0.5 lb, 1 lb, 1.25 lb, and 2.5 lb. This allows a lifter to add weight in increments as small as 0.5 lb total (0.25 lb per side).

Why Smaller Increments Matter

Progressive overload — consistently adding weight over time — is the primary driver of strength gains. Beginners can add 5–10 lbs per session. Intermediate lifters might add 5 lbs per week. Advanced lifters may need months to add 5 lbs to a working set.

At that point, the smallest standard plate (2.5 lbs per side = 5 lbs total) is a large jump relative to what the body can adapt to in one training cycle. Fractional plates allow the load to increase by 1–2 lbs total per session — small enough for the body to adapt, but meaningful enough to keep progress moving.

Which Lifts Need Fractional Plates Most

Not all lifts stall at the same rate. Large compound lower body movements — squat and deadlift — can sustain 5 lb jumps for longer because they involve more total muscle mass. Smaller upper body movements hit a ceiling sooner.

Overhead press: The hardest lift to progress. Most intermediate lifters will stall on OHP long before other lifts. Fractional plates are almost mandatory here once you’re past the beginner phase.

Bench press: Stalls before the squat or deadlift, especially for lighter or smaller lifters. 2.5 lb increments per side can be too aggressive when close to a true max.

Barbell curl and other accessory lifts: Small muscles stall quickly. Adding 1 lb per side can be the difference between grinding progress and actually completing reps with good form.

Types of Fractional Plates

Steel fractional plates: Thin, accurate, and long-lasting. The most common type for powerlifters and Olympic lifters. Often color-coded per IWF standards. Because they’re thin metal, they take up minimal sleeve space — adding 1.25 lbs per side adds almost no width to the loaded bar.

Rubber-coated fractional plates: Slightly bulkier than steel but easier on floors and quieter. A good choice for home gyms where the bar occasionally rests on the floor between sets.

What Sizes to Buy

A practical fractional plate set covers these combinations:

Minimum recommended purchase: a set with pairs of 0.25 lb, 0.5 lb, 1 lb, and 1.25 lb covers every increment from 0.5 lb to 5 lbs in 0.5 lb steps. If you train in metric, the equivalent is pairs of 0.125 kg, 0.25 kg, 0.5 kg, and 1.25 kg.

When Should You Add Fractional Plates to Your Training?

The simple answer: when you can no longer make consistent progress with 5 lb jumps. For most lifters, this happens:

• Overhead press: after 6–12 months of consistent training
• Bench press: after 12–18 months of consistent training
• Squat and deadlift: later, typically 18–24+ months in

If you’ve failed the same weight three sessions in a row, you’re either not recovering well or the weight jump is too large. Fractional plates solve the second problem. Drop back 5–10%, then climb back up in 1–2 lb increments instead of 5 lb jumps.