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Bench press progression calculator

Enter the weight you used, the reps on your weakest working set and your rep range. The calculator tells you what to lift next session: the same weight for one more rep, one step heavier once every set reaches the top of the range, or a step back after three sessions without a new rep.

For dumbbells, the weight of one dumbbell.

Unit
Equipment

Example result

Next session

80kg

Aim for

3 × 7reps

Inside the range: same weight, one more rep on your weakest set.

How the next session is decided, 6–10 reps
Last sessionNext weight
Every set at 10+ reps82.5 kg
Weakest set 6–9 reps80 kg
Weakest set under 6 reps80 kg
3 sessions without a new rep72.5 kg
Build your next session

Bench press progression examples

One rule, four lifters. Where your weakest set lands in the range decides the next session.

  • Example 1

    Top of the range on a beginner bench

    A beginner benching 135 lb for 3 sets in an 8 to 10 range, whose weakest set just reached 10.

    Weight you used
    135 lb
    Reps on your weakest set
    10
    Working sets
    3
    Rep range, bottom
    8
    Rep range, top
    10
    Equipment
    Barbell
    Sessions in a row without a new rep
    0
    • Next session140 lb
    • Aim for3 × 8 reps

    Every set made the top of the range, so the bar goes up 5 lb and the reps go back to 8. Expect the first session at 140 lb to feel harder: building back to 10 is the next few sessions' job.

    Build your next session Open with these numbers

  • Example 2

    Stuck at the same reps for three sessions

    An intermediate lifter on 100 kg for sets of 5 to 8, whose weakest set has been 5 reps three sessions running.

    Weight you used
    100 kg
    Reps on your weakest set
    5
    Working sets
    3
    Rep range, bottom
    5
    Rep range, top
    8
    Equipment
    Barbell
    Sessions in a row without a new rep
    3
    • Next session90 kg
    • Aim for3 × 5 reps

    Three flat sessions is a stall, not a bad day. Take 90 kg for 3 × 5 and build back up through the range before the next try at 100 kg.

    Build your next session Open with these numbers

  • Example 3

    Dumbbell bench, 20 kg in each hand

    A home-gym lifter pressing 20 kg dumbbells for 3 sets of 8 to 12, weakest set 12.

    Weight you used
    20 kg
    Reps on your weakest set
    12
    Working sets
    3
    Rep range, bottom
    8
    Rep range, top
    12
    Equipment
    Dumbbells
    Sessions in a row without a new rep
    0
    • Next session22.5 kg
    • Aim for3 × 8 reps

    The next pair up is 22.5 kg, a 12.5% jump. That is why the reps drop back to 8: the wide range absorbs a big dumbbell step that a fixed 3 × 12 couldn't.

    Build your next session Open with these numbers

  • Example 4

    Below the range after a jump

    A woman who just moved her bench to 60 kg and got 7 reps on her weakest set, in an 8 to 12 range.

    Weight you used
    60 kg
    Reps on your weakest set
    7
    Working sets
    3
    Rep range, bottom
    8
    Rep range, top
    12
    Equipment
    Barbell
    Sessions in a row without a new rep
    0
    • Next session60 kg
    • Aim for3 × 8 reps

    One rep short of the range is normal right after a jump. Stay at 60 kg and get every set to 8 before thinking about the next 2.5 kg.

    Build your next session Open with these numbers

Bench press progression, session by session

Here is the rule played out on a 3 × 6 to 10 bench starting at 80 kg. Each row is the weakest set from one session and what the calculator gives for the next. The lifter adds a rep most sessions, earns 2.5 kg at 10 reps, then stalls at 8 and steps back.

Double progression on a 3 × 6–10 bench press
SessionWeakest setNext session
180 kg × 680 kg, 3 × 7
280 kg × 780 kg, 3 × 8
380 kg × 880 kg, 3 × 9
480 kg × 1082.5 kg, 3 × 6
582.5 kg × 782.5 kg, 3 × 8
682.5 kg × 882.5 kg, 3 × 9
782.5 kg × 882.5 kg, 3 × 9
882.5 kg × 882.5 kg, 3 × 9
982.5 kg × 875 kg, 3 × 6

How fast should your bench go up?

There is no fixed weekly rate that holds for everyone, so the calculator uses a rule instead: add reps at the same weight, and add weight once every set reaches the top of the range. How often the bar goes up then depends on how fast your reps climb.

Adding reps is real progress, not a consolation prize. In an 8-week study of 43 trained lifters, adding reps at a fixed load and adding load at fixed reps built similar strength and muscle. That study trained the legs, not the bench. To see where your bench stands, use the bench press standards.

Bench press technique

The lift in the examples

Barbell Bench Press

Chest

Progression only works if a rep means the same thing every session. Keep the same grip, touch point and range, or an extra rep may just be a shorter one.

How to do it

  1. Lie on the bench with your eyes just under the bar and plant your feet flat, a little wider than your hips.
  2. Pull your shoulder blades together and down into the bench, keeping a small arch in your lower back with your glutes on the pad.
  3. Grip the bar a little wider than shoulder width and lift it out so it sits over your shoulders.
  4. Lower the bar under control to your lower chest, elbows about 45 degrees from your sides.
  5. Touch your chest without bouncing, then press up and slightly back toward the hooks.

Cues

  • Shoulder blades pinned
  • Elbows at 45 degrees
  • Touch, then press

Common mistakes

  • Bouncing the bar off the chest, which adds reps the muscles didn't earn.
  • Widening your grip or lifting your hips to get one more rep: the range got shorter, not your bench stronger.

Full bench press guide

Make it fit you

  • Pick a range wide enough for your jumps

    A 2.5 kg jump on an 80 kg bench is about 3%, so a range of 6 to 10 is plenty. Light lifts and dumbbells need wider ranges, like 8 to 12, because each step is a bigger share of the weight.

  • Count working sets only

    Your weakest set means your weakest working set. Warm-ups don't count; the warm-up calculator keeps them light enough not to cost you reps.

  • Smaller plates, smaller steps

    If your gym has 0.5 kg or 1 kg plates, you can add less than a full 2.5 kg step. Enter the weight you actually used next time and the rule carries on from there.

  • Reset the counter after a step back

    Once you drop the weight, enter 0 sessions without a new rep. The count starts again from the lighter weight.

  • Keep the reps honest

    A rep counts if it matches the reps before it. If you are unsure how close to failure you were, the RIR calculator shows what a set says about your effort.

Questions

How do I progressive overload on the bench press?

Pick a rep range, stay at one weight and add reps until every set reaches the top, then add the smallest step your plates allow and start at the bottom of the range again. Double progression covers the rule in detail.

Should I add reps or weight first?

Reps first, inside a rep range. Adding weight only once every set reaches the top means the new, heavier weight still lands inside the range for all your sets.

How much weight should I add to my bench?

The smallest step you can load: 2.5 kg or 5 lb on a barbell. Add it when your weakest set reaches the top of your rep range, not on a schedule.

Why use my weakest set and not my best?

The weakest set tells you whether the weight works for all your sets. Raising the bar because the first set went well leaves the last sets below the range.

What do I do when my bench stalls?

After three sessions without a new rep, drop about 10% and build back up from the bottom of the range. How to break a lifting plateau covers what else to change.

How often should I increase the weight?

Whenever your weakest set reaches the top of the range. When to increase weight covers the signals in more detail.

Sources

Let your weakest set pick the next weight

Log load, reps and RIR on iPhone or Apple Watch, and RIRLift applies this rule after every session, sizes each jump to your equipment, and suggests a step back when a lift stalls.

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