Warm-Up Set Calculator
Generate percentage-based barbell warm-up sets from your working weight, with plate loading and rest guidance.
Your Lift
Working weight and exercise
Squat warm-ups for 225 lb
After the last warm-up, rest 2–5 minutes before your first working set at 225 lb.
Quick Answer
Warm up with 3–4 easy sets before your working weight: empty bar (or ~40%) for 10 slow reps, 60% for 5, 80% for 3, and 90% for a single, resting 45–90 seconds between them. For a 225 lb working weight that is 45×10, 135×5, 180×3, 205×1 — then 2–5 minutes of rest before your first real set.
Key Facts
- First set: empty bar whenever the bar is lighter than 40% of your working weight
- Standard ladder: ~40% ×10, 60% ×5, 80% ×3, 90% ×1 (225 lb → 45, 135, 180, 205)
- Warm-ups should never feel like effort — if you grind, the jumps are too big
- Rest 45–90s between warm-ups; save 2–5 minute rests for working sets
- Bar weight: 45 lb (20 kg) standard, 35 lb (15 kg) for many women's/certified bars
- Plate math is rounded to the nearest 5 lb / 2.5 kg so every set is loadable
Frequently Asked Questions
Three to five. The calculator's four-set ladder (bar/40%, 60%, 80%, 90%) covers most lifters; heavy deadlifts often skip one intermediate set because the jump from the bar is proportionally smaller.
Roughly 40% → 60% → 80% → 90%, starting with the empty bar when it is lighter than 40%. The last warm-up at 90% for a single rehearses the top weight without stealing energy from working sets.
45–90 seconds. Warm-ups are for readiness, not recovery — the weights are light enough that your breathing recovers quickly. Take the full 2–5 minute rest only before your first working set.
Never. A warm-up that feels hard is stealing from your working sets. If 80% for 3 feels heavy, insert an extra set at 70% and keep everything crisp.
General cardio (5–10 min) raises body temperature and is a fine start, but it does not rehearse the movement pattern, joint positions, or bar path. Do light cardio first if you like, then run the barbell ladder.
Warm-ups ≈ 40% ×10 → 60% ×5 → 80% ×3 → 90% ×1How this works
Calculations are run entirely in your browser. No inputs are sent to our servers and no account is required. Formulas follow standard US definitions from the IRS and the CFPB where applicable; international users should confirm local tax and regulatory rules apply.
What this tool can’t do
When to consult a professional
This is a software engineering tool, not financial advice. Run the math here, then take the result to a certified financial planner, CPA, or your bank before making a decision that materially affects your money.
Sources
- [1]Consumer Financial Protection Bureau (CFPB)Official sourceconsumerfinance.govAccessed Apr 21, 2026
US consumer finance regulator; authoritative on mortgage disclosures, APR rules, credit cards.
Full-stack software engineer specializing in embedded systems, web architecture, and AI/ML. Founder of Practical Web Tools. Built the gesture-controlled drone IP acquired by KD Interactive (Aura Drone, sold on Amazon).