How strong is your deadlift, really?
Use this free Deadlift 1RM Calculator to estimate your true pulling strength without testing a risky max in the gym. Enter your best set and get instant, science-backed results. <div class=”powered-by” style=”text-align:center; margin-top: 10px;”> Powered by <a href=”https://strengthcalc.com” target=”_blank” rel=”noopener”>StrengthCalc.com</a> </div>
Deadlift Press 1 Rep Max Calculator
Your Estimated Deadlift Press 1RM is
Formula Comparison
Training Percentages
| % of 1RM | Weight |
|---|
Are these results accurate? These formulas provide a very good *estimate* of your 1RM. They are most accurate for reps between 2 and 10. The different formulas use slightly different mathematical models, which is why the results vary, especially at higher rep ranges. The primary result shown above is based on the widely-used Epley formula.
Why Use the Deadlift 1RM Calculator?
Testing a 1 rep max with deadlifts is intense. It requires:
- Full-body tension
- A perfectly set spine
- A confident mindset
- Often… a strong cup of coffee ☕
But it’s not always safe or necessary to max out in the gym.
That’s where this calculator shines.
By inputting the weight you lifted and how many reps you performed, we estimate your true 1RM using multiple trusted formulas. You also get training percentages to plan smarter sessions.
How It Works
Just enter:
- Weight lifted (kg or lbs)
- Reps performed (ideal: 2–10)
- Units selector
You’ll instantly see:
✅ Your estimated 1 rep max
✅ Calculations from 4 different formulas: Epley, Brzycki, Mayhew, Lombardi
✅ Deadlift percentage chart (50%–100%)
No guesswork. Just strength math.
The Formulas Behind the Calculation
We use multiple 1RM formulas to give you a well-rounded estimate:
- Epley: Best for 3–10 reps. Most common.
1RM = weight × (1 + reps / 30) - Brzycki: Tends to estimate slightly higher at low reps.
1RM = weight × (36 / (37 - reps)) - Mayhew: More complex. Developed for football athletes.
1RM = (100 × weight) / (52.2 + 41.9 × e^(-0.055 × reps)) - Lombardi: Favors higher reps.
1RM = weight × (reps^0.10)
We show Epley’s result first since it’s balanced, but compare them all for context.
Deadlift Percentages Chart
Once you know your estimated 1RM, you can train with purposeful intensity.
| % of 1RM | Purpose | Example (100kg 1RM) |
|---|---|---|
| 100% | Max effort / test day | 100 kg |
| 90–95% | Heavy doubles/singles | 90–95 kg |
| 80–85% | Strength work (3–5 reps) | 80–85 kg |
| 70–75% | Volume / technique | 70–75 kg |
| 50–65% | Speed / warm-up / rehab | 50–65 kg |
✅ Use this breakdown to write your next 4–6 week cycle with confidence.
Why the Deadlift Is so Good
The deadlift is a true test of raw strength.
It’s one of the “big three” powerlifts, along with the squat and bench press, and arguably the most primal.
You simply walk up to a loaded bar and lift it off the ground. No fancy setup. No stretch reflex. No excuses.
It works nearly every major muscle group:
- Hamstrings
- Glutes
- Lats
- Traps
- Core
- Grip
And it builds:
- Confidence
- Discipline
- Real-world functional strength
Whether you’re training for powerlifting, CrossFit, strongman, or general strength, the deadlift is non-negotiable.
Is This Calculator Accurate?
Yes — within reason.
1RM formulas are most accurate when reps are between 2 and 10.
The closer to 1-rep territory you get (e.g. 2–4 reps), the more precise your estimate will be.
⚠️ Over 12 reps? Accuracy drops off fast — muscular endurance becomes a bigger factor than absolute strength.
Real-World Examples
Let’s say you deadlift:
- 170 kg × 5 reps
Your estimated 1RM will likely be 195–200 kg depending on the formula.
This lets you:
- Set targets like “Pull 180 kg × 3 next week”
- Plan a 12-week cycle aiming for a 210 kg 1RM
- Know your %s for warm-ups or top sets (e.g. 80% = 160 kg)
Deadlift World Records (2025 Highlights)
For some motivation, here are a few insane numbers:
- 🏆 Raw World Record (Men):
501 kg (by Hafthor Bjornsson, 2020 – official strongman lift)
460.5 kg (by Jamal Browner, powerlifting federation, 2023) - 🏆 Raw World Record (Women):
285 kg by Tamara Walcott (2022, +90kg class)
272.5 kg by Kristy Hawkins (2023, 75kg class)
These numbers prove what the human body is capable of… but your journey is your own.
Whether you pull 100 lbs or 500 lbs — the mindset is the same.
Tips to Improve Your Deadlift
💡 Here are a few tips to grow your 1RM:
- Train both conventional and sumo styles
- Add accessory lifts like RDLs, good mornings, and barbell rows
- Focus on grip strength and bar speed
- Don’t neglect recovery — sleep and food matter
- Use progressive overload and deload every 4–6 weeks
Frequently Asked Questions
Q: Should I round the results from this calculator?
Yes. Use plates you actually have. Round to the nearest 2.5 kg or 5 lbs.
Q: Can I use straps for my test set?
You can — but remember, the calculator reflects the strength of that specific set (grip included or not).
Q: Is this for sumo or conventional?
Both. The Deadlift 1RM Calculator formulas don’t care — only you do 😉
Q: Can I use this calculator during a cut or bulk?
Absolutely. It’s a great way to monitor strength during any nutrition phase.
Final Thoughts
Deadlifts are hard. That’s why they matter.
Use this Deadlift 1RM calculator regularly to track your strength, even when you’re not chasing PRs every week. Combine it with a solid training plan, and let the numbers guide you — not your ego.
📲 Bookmark this page, revisit it monthly, and share it with your lifting crew.
