| What it does | Free metric weight converter for milligrams, grams and micrograms
| Free car sales tax and DMV fee calculator for all 50 states and DC
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| Based in | Not given
| US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Live results as you type with no submit button or page reload
- Exact decimal arithmetic with no rounding drift
- Converts in both directions: milligrams to grams and grams to milligrams
- Includes micrograms as a first-class unit in the full mcg to mg to g chain
- Privacy by design with calculations running entirely in browser
- Results display up to ten decimal places with at least four significant digits for small values
- Copy button to place full equation on clipboard
- Common values quick-access chips for frequent conversions
| - 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
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| What makes it different | - Exact results using SI definitions with no approximation or rounding error
- Entirely free with no account, paywall, usage limit or installation required
- Nothing sent to servers: all calculations run in your browser for complete privacy
- Educational guides explaining practical contexts where these units matter
| - 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
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 17 | 0 |
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| Citation Flow (Majestic) | 30 | 13 |
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| Referring domains (Majestic) | 431 | 1 |
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Milligrams to Grams
US Vehicle Tax Calculator