Free tool — no signup required

Calculate your rucking performance

Calories burned, optimal weight, and training insights — powered by military exercise science formulas.

Enter your data and results
will appear here in real time

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Calories Burned
0
Minutes
0%
Body Weight
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Pace
Your Ruck — Low impact
Running — High impact
Walking — Low impact

Find Your Optimal Ruck Weight

Based on your body weight and military training guidelines.

🌱
Beginner
—
lbs (10–15%)
Focus on form and endurance. Perfect starting point.
💪
Intermediate
—
lbs (15–25%)
Great for building strength and endurance together.
🔥
Advanced
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lbs (25–35%)
Military-grade. Only for experienced ruckers.
1
Weeks 1–4—
2
Weeks 5–8—
3
Weeks 9–12—

Enter your body weight to see
personalized weight recommendations

No sessions saved yet.
Calculate and save a session to start tracking.

How the calculator works

Science-backed formulas from military load-carriage research (USARIEM).

1

Enter your data

Body weight, ruck weight, distance, and pace. Works with both imperial and metric units.

2

Get instant results

MET-based calorie calculation adjusted for terrain, pace, and load — accurate within 5–8% of lab testing.

3

Track progress

Save sessions, view charts, and compare your performance across activities over time.

More rucking tools

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Pace Calculator

Find your target pace for any distance and time goal.

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Weight Guide

Personalized ruck weight recommendations by fitness level.

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Beginner Guide

Everything you need to know to start rucking safely.

Read →

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Expert-reviewed rucking packs for every budget.

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Common questions

Rucking typically burns 400–700 calories per hour, depending on your weight, ruck weight, pace, and terrain. That's 2–3× more than regular walking and comparable to running — with significantly lower joint impact.
Begin with 10–15% of your body weight. For a 180 lb person, that's 18–27 lbs. Use our Optimal Weight tab above for a personalized recommendation. Increase by 5 lbs every 2–3 weeks as your body adapts.
They serve different goals. Rucking burns similar calories with significantly lower joint impact while building more functional strength. It's excellent for people with knee issues, those wanting practical fitness, or anyone looking for a lower-injury-risk cardio option. See our detailed comparison.
Start with 2–3 sessions per week with rest days between. Advanced ruckers can do 4–5 sessions weekly. Follow our 12-week training plan for a structured approach.
U.S. Army standard: 12 miles in under 3 hours with a 35 lb ruck. Marine Corps: 20 miles in under 4 hours with 45 lbs. Start gradually — see our military standards guide.

Ready to start rucking?

Read our complete beginner guide with gear recommendations, form tips, and a starter training plan.

Read the Beginner Guide →