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Bench Press Max Calculator — Estimate Your Bench 1RM

Type a bench press weight and reps. Get your estimated max bench and a full rep table.

Estimated Bench press 1 rep max
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Reps Weight % 1RM
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What is bench press calculator?

A bench-specific estimated 1RM is what bench-focused programs are built around. The math is the Epley formula — 1RM = weight × (1 + reps / 30) — and it works on bench because the relationship between rep count and intensity is roughly linear in the 1–10 rep range that bench programming lives in. Past 10 reps the relationship curves and the formula starts drifting; that’s why this calculator rejects input above 10 reps, and why the rep table caps at 10 rows.

The rep-percentage table below the headline is the training prescription that programs like 5/3/1 and Texas Method bench days actually call for. Each row is a rep count, the weight you’d load to hit that rep count, and the percent of your bench 1RM that weight represents. The weights are rounded to the smallest plates you’ll find on a commercial gym floor (5 lb in the US, 2.5 kg elsewhere) so each row is a number you can actually load on the bar.

One subtlety that matters more on bench than other lifts: bench style affects the underlying max but not the formula. Touch-and-go reps bench more than paused reps, so a top set done touch-and-go produces a slightly higher e1RM than the same lifter would actually hit with a competition pause. If you’re prepping for a meet, run your top sets paused so the estimate calibrates to the bench you’ll actually press on the platform.

Privacy is the final detail worth naming. Every calculation runs locally in your browser. The weight and reps you type never leave your device — there is no server, no API, no analytics on input values. The page does carry a third-party display ad slot (which is how the site stays free), but the ad has no access to the calculator’s state.

When to use a bench press calculator

  • Picking a working weight for today's bench session — You hit 185 lb × 5 reps last week and you want to know what to load for a heavy triple. The rep table maps 3 reps directly to a plate-rounded working weight — about 91% of your estimated max bench.
  • Programming bench off a top set — Linear progressions and 5/3/1 prescribe percentages of a training max on bench. The rep table is the lookup the program needs — every row is a percentage of your bench 1RM and the weight that percentage rounds to on the bar.
  • Tracking bench PR progress over weeks — Testing a true bench 1RM is fatiguing and elevates injury risk on a press where the bar travels over your face. Most lifters track progress through a top set of 3–8 reps and convert to an estimated 1RM. Same rep × weight set tested at week 1 vs week 6 gives an apples-to-apples comparison without ever touching a true single.

How to use the Bench Press Max Calculator — Estimate Your Bench 1RM

  1. Pick your unit — Toggle between lb and kg at the top of the form. Your choice is remembered for next time.
  2. Enter the bench weight you lifted — Type the weight on the bar from your top bench set. Decimals are accepted (handy for half-kilo plates), and the mobile keyboard opens to a numeric layout automatically.
  3. Enter the reps you completed — Type the number of reps you finished at that weight. The estimate is most accurate at 1–10 reps; past 10 the formula starts to drift, so we cap input there.
  4. Read the estimated bench 1RM and the rep table — The headline at the top of the result panel is your estimated bench one-rep max. The 10-row table below it is your training prescription — each row maps a rep count to the working weight (rounded to plate-friendly numbers) and the percent of bench 1RM that weight represents.

Worked examples

5 reps × 185 lb

Input:  Weight 185 lb, Reps 5
Output: Estimated bench 1RM ≈ 215.8 lb

A typical heavy-five working set on bench. The rep table shows 185 lb maps to about 86% of bench 1RM.

8 reps × 60 kg

Input:  Weight 60 kg, Reps 8
Output: Estimated bench 1RM ≈ 76 kg

An 8-rep hypertrophy-range bench set. Useful when programming AMRAPs (as-many-reps-as-possible) — the e1RM tracks bench progress without testing a true single.

3 reps × 225 lb

Input:  Weight 225 lb, Reps 3
Output: Estimated bench 1RM ≈ 247.5 lb

A heavy triple is one of the most reliable submaximal sets for estimating bench 1RM — close enough to the true max that the formula has very little drift.

Frequently asked questions

What is a bench 1RM?
Your bench one-rep max (1RM) is the heaviest weight you can bench press one time with correct form. Most lifters never test a true bench 1RM — testing one is fatiguing, elevates shoulder/elbow injury risk, and a failed rep with a bar over your face is genuinely dangerous without a spotter or safety bars. Instead, lifters estimate bench 1RM from a submaximal set.
How accurate is this bench max estimate?
Within about ±2–3% of a true bench 1RM at low rep counts (1–5 reps), drifting wider at higher rep counts. The estimate is a planning tool, not a medical measurement — day-to-day variance in actual bench performance (sleep, pre-workout meal, fatigue from earlier in the session) is roughly the same magnitude as the formula's error.
Why does the calculator only accept 1–10 reps?
The Epley formula's published validity range is 1–10 reps. Past 10 reps the formula systematically over-estimates 1RM because it assumes a linear relationship between reps and intensity, and that relationship breaks down once a bench set crosses into endurance territory (15+ reps). We cap input at 10 to avoid shipping numbers we can't stand behind.
Should I actually test a true bench 1RM in the gym?
Rarely, and only with safety set up. A true bench 1RM is a maximal singles attempt — high CNS fatigue, real injury risk if form breaks under load, and on bench specifically the bar can pin you to the bench if you fail without a spotter. If you do test, do it under a competent spotter or with safety bars set just below your chest height, after a thorough warm-up. Most lifters skip 1RM tests entirely and program off an estimated max from a heavy triple or single AMRAP.
Is bench 1RM the same formula as for squat or deadlift?
Yes — the Epley formula is lift-agnostic. It relates rep count to intensity in general, not to any specific lift. The same calculator works for squat, bench press, deadlift, overhead press, and any other compound. Relative accuracy varies slightly by lift (deadlift e1RMs read a bit high because deadlifts fatigue the CNS faster than bench), but the formula itself is the same.
Why are the table weights rounded to 5 lb / 2.5 kg?
Those are the smallest plates you'll typically find on a commercial gym floor. Rounding to plate-friendly numbers means each table row is a weight you can actually load on the bar without fractional plates. The headline bench 1RM stays unrounded (one decimal) because it's an estimate, not a weight you'll load — over-rounding the estimate would obscure small week-to-week changes in your tracking.
Does pause bench, touch-and-go, or competition pause change the calculation?
The math doesn't know — you'll get the same e1RM either way. But the actual 1RM you'd hit is sensitive to bench style. A touch-and-go set at 5 reps benches more than a paused 5-rep set, so the e1RM from touch-and-go reads slightly high if you're planning to compete with a paused 1RM. If you're prepping for a meet, do your top sets paused so the estimate calibrates to your competition style.
Are my numbers stored or sent anywhere?
No. Every calculation runs locally in your browser. Your weight and reps are never transmitted — there is no server, no API call, no analytics on input values. The only state we save is your unit preference (lb vs kg) in localStorage, so the toggle remembers your choice next visit.

Squat Max Calculator — Estimate Your Squat 1RM

Type a squat weight and reps. Get your estimated max squat and a full rep table.

1 Rep Max Calculator — Estimate Your 1RM From Any Set

Type a weight and reps. Get your estimated 1RM and a full rep-percentage table.

TDEE Calculator — Total Daily Energy Expenditure

Type your stats and pick an activity level. Get the calories you actually burn day-to-day.