Squat Calculator: Find Your Squat Max
Enter the weight and reps of any squat set. You get your estimated squat max (1RM), squat percentages, a warm-up plan and the plates to load.
- Back or front squat
- 7 formulas averaged
- lb and kg
Your squat max
0 lb
How does this squat calculator work out your max squat?
This squat calculator turns a set you have done into an estimated one rep max. Enter the weight and your reps, pick back squat or front squat, and it averages seven published 1RM formulas. It uses the same engine as our one rep max calculator, so you get the same answer for the same set on every page.
For example, 315 lb for 5 reps gives an estimated squat max of about 363.8 lb. In kilograms, 140 kg for 3 reps gives about 153 kg. Use a set of 3 to 6 reps to depth, taken close to failure, for the best number. Wondering “what’s my squat max?” This squat max estimator answers it in seconds.
Why use a squat calculator?
Testing a true squat max is tiring and needs safety pins or spotters. A squat calculator gives you a reliable number from a normal working set, so you can plan training without a max day. Use the squat calculator every few weeks with your best heavy set to see your progress.
What is the difference between a back squat and front squat max?
In a back squat the bar sits on your upper back. In a front squat it sits on the front of your shoulders. The front squat keeps your torso more upright and puts more of the work on your quads and upper back. Because of this, almost every lifter front squats less than they back squat.
How big the gap is varies a lot between people. It depends on your build, your mobility and how much you practice each lift. So do not guess a front squat max from your back squat. Pick Front squat in the squat calculator and enter a real front squat set. That gives you a front squat max you can train with.
High-bar vs low-bar back squat
High-bar means the bar sits on top of your traps. Low-bar means it sits a few inches lower, across the back of your shoulders, with more forward lean. Many lifters can squat more low-bar, which is why it is popular in powerlifting. Whichever style you use, enter a set in that style so your squat PR matches the way you train.
How deep should a squat be for a max?
A max only means something if the depth is the same every time. In powerlifting, a squat counts when the top of your thighs at the hip joint drops below the top of your knees. Many gyms call this “breaking parallel”.
If your working sets are to half depth, your estimated max will be for a half squat, not a full one. That is fine for your own tracking, but it will not match a competition squat. Film a set from the side if you are not sure how deep you go.
What do the formulas say for a squat set?
Here is how the seven formulas estimate a 140 kg × 5 rep squat:
| Formula | Estimated 1RM | vs average |
|---|---|---|
| Epley | 163.3 kg | +1.6 kg |
| Brzycki | 157.5 kg | −4.2 kg |
| Lander | 159.2 kg | −2.5 kg |
| Lombardi | 164.4 kg | +2.8 kg |
| Mayhew et al. | 166.6 kg | +4.9 kg |
| O’Conner et al. | 157.5 kg | −4.2 kg |
| Wathan | 163.2 kg | +1.5 kg |
| Average | 161.7 kg | – |
In one study of common 1RM equations, the predictions matched real squat maxes closely, but most equations were still off on average (LeSuer and colleagues, 1997). The average of several formulas, as used here, helps balance that out.
Squat percentage chart
Most squat programs are written as percentages of your max. The squat calculator shows these for your number. Here is an example for a 405 lb squat max:
| % of 1RM | Weight | Reps (approx.) | Often used for |
|---|---|---|---|
| 100% | 405 lb | 1 | Max strength |
| 95% | 385 lb | ~2 | Max strength |
| 90% | 365 lb | ~4 | Max strength |
| 85% | 345 lb | ~6 | Strength |
| 80% | 325 lb | ~8 | Strength |
| 75% | 305 lb | ~11 | Hypertrophy |
| 70% | 285 lb | ~14 | Hypertrophy |
| 65% | 265 lb | ~17 | Size + endurance |
| 60% | 245 lb | ~20 | Size + endurance |
| 55% | 225 lb | 20+ | Warm-up |
| 50% | 205 lb | 20+ | Warm-up |
And for a 180 kg squat max:
| % of 1RM | Weight | Reps (approx.) | Often used for |
|---|---|---|---|
| 100% | 180 kg | 1 | Max strength |
| 95% | 170 kg | ~2 | Max strength |
| 90% | 162.5 kg | ~4 | Max strength |
| 85% | 152.5 kg | ~6 | Strength |
| 80% | 145 kg | ~8 | Strength |
| 75% | 135 kg | ~11 | Hypertrophy |
| 70% | 125 kg | ~14 | Hypertrophy |
| 65% | 117.5 kg | ~17 | Size + endurance |
| 60% | 107.5 kg | ~20 | Size + endurance |
For the whole range down to 30%, and a lookup grid you can print, see the one rep max chart.
What is my squat rep max for 3, 5 or 10 reps?
Coach mode in the calculator works as a squat rep max calculator. It shows your estimated 2RM to 12RM. Here is a 180 kg squat max broken down:
| Rep max | Weight | % of 1RM |
|---|---|---|
| 1RM | 180 kg | 100% |
| 2RM | 170 kg | 94% |
| 3RM | 165 kg | 92% |
| 4RM | 160 kg | 89% |
| 5RM | 155 kg | 87% |
| 6RM | 152.5 kg | 84% |
| 7RM | 147.5 kg | 82% |
| 8RM | 145 kg | 80% |
| 9RM | 140 kg | 78% |
| 10RM | 137.5 kg | 76% |
How should I warm up before a heavy squat?
Start with an empty bar, then add weight in a few steps while the reps drop. You want to feel ready, not tired. Here is an example ramp to a 140 kg top set on a 20 kg bar:
| Set | Weight | Reps | Plates per side (kg) |
|---|---|---|---|
| Empty bar | 20 kg | 8-10 | bar only |
| 40% | 55 kg | 5 | 15 + 2.5 |
| 60% | 85 kg | 3 | 25 + 5 + 2.5 |
| 75% | 105 kg | 2 | 25 + 15 + 2.5 |
| 85% | 120 kg | 1 | 25 + 25 |
| 92% | 130 kg | 1 | 25 + 25 + 5 |
| Top set | 140 kg | as planned | 25 + 25 + 10 |
Build your own ramp for any top set with the warm-up calculator, or tap a weight in your results to see the plates.
How do I squat heavy safely?
A failed squat is only dangerous if you have nowhere for the bar to go. Before you try a squat PR:
- Squat in a power rack with safety pins or straps. Set them just below the bottom of your squat, so the bar lands on them if you sit down with it.
- Practice bailing. With a light weight, sit into the bottom and let the bar settle on the pins. Knowing you can do this makes heavy sets less scary.
- Use spotters properly. For a max, one spotter behind you or one at each end of the bar is safer than no spotter. Agree on signals first.
- Stop when form breaks. If your knees cave in or your hips shoot up far ahead of the bar, end the set.
Our guide on how to test your 1RM safely lays out a full max day.
Safety note: these are estimates. Use safety pins or a spotter, stop if you feel pain, and check with a doctor before heavy lifting if you have an injury, a heart condition or are pregnant.
How can I raise my squat max?
- Squat often. Two or three squat sessions a week, at different weights, builds skill and strength together.
- Add weight in small steps. 5 lb or 2.5 kg jumps add up over months. See our guide to progressive overload.
- Keep depth honest. Adding weight by cutting depth is not real progress.
- Build the helpers. Front squats, paused squats, lunges and back work all support a bigger squat.
- Plan with percentages or RPE. Use your squat max or the RPE calculator to choose working weights.
Remember: the squat calculator can only be as good as the set you give it. Use full-depth reps, the same bar position you train with, and a set taken close to failure.
Other lift calculators
Estimate your other maxes with the bench max calculator and the deadlift calculator. Add all three to see your total and your powerlifting score on the Wilks calculator.
Frequently asked questions
How do I find my squat max without testing it?
Squat a weight for 3 to 6 good reps to full depth, then enter the weight and reps above. The calculator averages seven 1RM formulas. For example, 225 lb for 5 reps gives a squat max of about 259.9 lb.
Can I use this as a front squat max calculator?
Yes. Choose Front squat and enter a front squat set. The maths is the same, but using a real front squat set gives you a front squat max you can train with, instead of a guess from your back squat.
Why is my estimated squat max different from what I can actually lift?
Formulas are averages. Your real max depends on your depth, technique, fatigue and how good you are at heavy singles. Some people are stronger at high reps, others at low reps. Use the range shown under your result as a guide.
What does a squat PR calculator do?
It is the same as a squat 1RM calculator. It estimates the most you could squat for one rep from a set of several reps, so you can track your squat PR without testing a true max.
How many reps should I use to estimate my squat max?
Use 3 to 6 reps. Heavier sets give closer estimates. Above 10 reps, the result depends more on your fitness and less on your strength, so it is less reliable.
Do I need a belt for a squat max?
No, but many lifters use one for heavy sets because it can help them brace. If you train with a belt, estimate your max from belted sets, and if you train without one, use beltless sets, so the numbers match.
Sources
- LeSuer DA, McCormick JH, Mayhew JL, Wasserstein RL, Arnold MD. The accuracy of prediction equations for estimating 1-RM performance in the bench press, squat, and deadlift. Journal of Strength and Conditioning Research. 1997;11(4):211-213. Abstract
- Reynolds JM, Gordon TJ, Robergs RA. Prediction of one repetition maximum strength from multiple repetition maximum testing and anthropometry. Journal of Strength and Conditioning Research. 2006;20(3):584-592. PubMed 16937972
- National Strength and Conditioning Association. Training Load Chart. NSCA (PDF)