What are warmup sets?

Warmup sets are lighter sets performed before your main working sets to gradually prepare your muscles, joints, and nervous system for the target weight. They reduce injury risk and improve performance on working sets.

How many warmup sets should I do?

For most lifters, 3–5 warmup sets is appropriate. Beginners with lower working weights can use 2–3 sets. Advanced lifters moving very heavy weights often need 4–6 sets to feel fully primed.

Why are the warmup weights rounded?

Weights are rounded to the nearest practical increment — 2.5 lb or 1.25 kg — because those are the smallest standard plates available in most gyms. Hitting the exact percentage to a decimal is neither possible nor necessary.

Can I change the percentages?

Yes. Each warmup set has an editable percentage field. Adjust any value and the weights update instantly. The default progression (40%, 60%, 75%, 90%) is a widely used protocol but you can tailor it to your preference.

Should I count the bar-only set?

A bar-only set (empty barbell) is a good movement primer and is not included in this calculator. Perform one or two sets with just the bar before starting these calculated warmup sets if the movement pattern is complex.

Does warmup fatigue affect my working sets?

Proper warmup sets use few enough reps and light enough weights that they cause virtually no fatigue. The rep scheme in this calculator (10, 8, 5, 3) is designed to prime the nervous system without accumulating metabolic fatigue.

Warmup Set Calculator

Name: Warmup Set Calculator
Availability: InStock
Author: Nham Vu

Enter your working weight and get a complete progressive warmup plan with exact weights and reps — in kg or lb.

Warmup Set Calculator

Unit

Working Weight (lb)

Number of Warmup Sets (4)

23456

Enter your working weight and calculate to see your warmup plan.

Warmup Plan

Adjust Percentages

Set	% of Working	Weight	Reps	Rest
Working Sets			per plan	3–5 min

Warmup Tips

Start with an empty barbell to groove the movement pattern before loading.
Rest 60–90 seconds between warmup sets. Rest 3–5 minutes before your first working set.
Keep reps low on heavier warmup sets to avoid pre-fatiguing your muscles.
Move deliberately on each warmup rep — treat them as technique practice, not just weight.

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Summary

Enter your working weight and get a complete progressive warmup plan with exact weights and reps — in kg or lb.

How it works

Enter your working weight — the weight you will use for your main working sets.
Choose the number of warmup sets (2–6). Four sets is the default.
Select your unit: kg or lb.
The calculator applies default percentages (40%, 60%, 75%, 90%) to your working weight.
Each warmup weight is rounded to the nearest practical plate increment (2.5 lb or 1.25 kg).
Rep counts decrease as you get heavier: 10, 8, 5, 3 for a 4-set plan.
Adjust any percentage field to customize individual warmup sets.
Click "Copy Warmup Plan" to copy the full plan as plain text.

Use cases

Plan your warmup before a heavy squat, bench press, or deadlift session.
Avoid under-warming up and risking injury on a heavy single.
Avoid over-warming up and fatiguing yourself before the working sets.
Follow a structured warmup protocol recommended by a coach.
Quickly calculate warmup weights when the gym math feels slow.
Share a warmup plan with a training partner or athlete.

Frequently Asked Questions

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Last updated: 2026-05-30 · Reviewed by Nham Vu