| What it does | Free drywall calculator for estimating sheets, joint compound, tape, screws and cost
| Convert decimal hours to hours and minutes with exact math
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| Stage | Startup
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| Founded | 2026
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| Based in | Not given
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - 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
| - Convert decimal hours to hours and minutes format
- Support for multiple units: hours, minutes, seconds, and days
- Display results in multiple formats including clock time
- One-click copy functionality
- Optional rounding to nearest minute
- Quick reference conversion charts
- Show calculation steps
- Bulk converter for pasting columns
- Exact math using microseconds instead of floating-point
- Display total minutes and seconds for results
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| What makes it different | - 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
| - All calculations run in your browser with no data uploaded
- Exact math using whole microseconds prevents floating-point errors
- Addresses the common timesheet mistake of reading 7.30 as 7:30
- No accounts or sign-up required
- Treats wrong results as bugs with automated test coverage
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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) | 6 | 0 |
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| Citation Flow (Majestic) | 20 | 0 |
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| Referring domains (Majestic) | 5 | 0 |
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Drywall Planner
Decimal to Time