| What it does | Free Karvonen formula heart rate zone calculator
| Free 3D body shape tool from height, weight, and measurements
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| Stage | Established
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
| Not given
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| Key features | - Five personalized training zones based on heart rate reserve
- Accounts for resting heart rate and cardiovascular fitness
- Custom maximum heart rate input from multiple formulas
- No signup required, runs entirely in browser
- Weekly resting heart rate logging and progress tracking
- Zone-specific training guidance for different goals
- Shareable and printable zone results
- Embeddable calculator widget for websites
| - 3D body shape preview from height, weight, and optional measurements
- Current and goal silhouette comparison
- BMI, waist-to-height ratio, and waist-to-hip ratio calculations
- No photo upload required
- Metric and imperial unit support
- Rotate and zoom 3D model preview
- Estimated body fat percentage calculation
- Separate tools for BMI, height comparison, weight simulation
- Waist, hip, chest, inseam, and shoulder measurement inputs
- No account or personal profile required
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| What makes it different | - More accurate than age-only formulas, accounting for individual cardiovascular fitness
- Zones adapt as your fitness improves and resting heart rate drops
- Based on 1957 Karvonen research used by coaches and sports scientists
- Independent, no data collection or external servers
- No ads inside the calculator, free to use with optional embedding
| - No photo upload or signup required
- Completely free to use
- Measurements not stored or tracked
- Works entirely in browser without scans or wearables
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 11 ● no change since last check | 17 ● no change since last check |
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| Trust Flow (Majestic) | 19 | 5 |
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| Citation Flow (Majestic) | 25 | 29 |
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| Referring domains (Majestic) | 40 | 112 |
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CalculateMyHeartRate
Body Visualizer