| What it does | Free car sales tax and DMV fee calculator for all 50 states and DC
| Free Karvonen formula heart rate zone calculator
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| Stage | Not given
| Established
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Includes title, registration and plate fees
- Accounts for trade-in values and their tax impact
- Verified against official government sources
- Shows local and city tax rates
- Provides state-by-state guides with exemptions
- Links to official DMV and revenue department pages for verification
| - 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
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| What makes it different | - Checked against 141 official government sources for accuracy
- Covers all 51 jurisdictions with state-specific rules applied
- Free with no sign-up required
- Updated regularly with verification labels showing data confirmation status
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 19 |
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| Citation Flow (Majestic) | 13 | 25 |
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| Referring domains (Majestic) | 1 | 40 |
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US Vehicle Tax Calculator
CalculateMyHeartRate