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Health & Fitness

Workout & Physical Activity Calculators

4 free tools for calories burned, one rep max, target heart rate and running pace.

⚡ Instant Results 🔒 100% Private 📱 Works on All Devices 🆓 Always Free

4 Workout & Physical Activity Calculators

Find the right tool for every fitness goal.

⚡ About SwiftCalculators

Accurate Tools You Can Actually Trust

Every calculator on SwiftCalculators is built on verified formulas. Whether you're calculating calories burned, planning a running race, or tracking your max lift — you get answers you can rely on, instantly, without any cost or account needed.

Instant Results
Results appear as you type — no loading screens, ever.
🎯
Verified Formulas
Every calculation checked by domain experts.
🔒
100% Private
All calculations run locally in your browser.
📱
Works Everywhere
Fully responsive on mobile, tablet and desktop.

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