| What it does | Free car sales tax and DMV fee calculator for all 50 states and DC
| Free drywall calculator for estimating sheets, joint compound, tape, screws and cost
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
| 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
| - Room dimension input with support for feet, inches and metric measurements
- Automatic sheet count calculation for multiple board sizes: 4x8, 4x9, 4x10, 4x12
- Standard opening deductions: 21 sq ft per door, 15 sq ft per window, 112 sq ft per garage door
- Adjustable waste factor from default 10% to custom percentages
- Joint compound calculation in pounds and 4.5 gallon pails
- Joint tape calculation in linear feet and 250 foot rolls
- Drywall screw count and weight estimation
- Optional cost estimate with custom price per sheet and labor rates
- Embed calculator on external websites with responsive resize code
- Support for both rectangular and L-shaped room configurations
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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
| - Calculates exact sheet count by laying out the board wall by wall the way a hanger would, accounting for offcuts and reuse
- All calculations run in the browser with no upload or storage of user data
- Transparent assumptions: every rule is checked against manufacturer and code references
- Real-time recalculation and instant results as you type without page reloads
- Metric unit support with automatic conversion of measurements and results
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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 | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 6 |
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| Citation Flow (Majestic) | 13 | 20 |
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| Referring domains (Majestic) | 1 | 5 |
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US Vehicle Tax Calculator
Drywall Planner