| What it does | Browser-based grade calculator for weighted course grades, final planning, and GPA estimates
| 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 | 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 | - Calculate weighted course grades from multiple assignments and assessments
- Support for multiple grade formats including percentages, letter grades, and points
- Final exam score planning to reach a target grade
- Customizable letter grade scales for different schools and instructors
- Display both raw and weighted grade averages
- Support for semester, quarter, and high school grades
- GPA point calculations with letter-grade conversion
- No account required to use calculators
- Browser-based access with save functionality
| - 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 | - Handles partial course weights that do not add up to 100 percent
- Distinguishes between raw averages and weighted averages to show individual assignment impact
- Automatically converts between percentages, points, and letter grades using customizable scales
- Estimates the exact final exam score needed to achieve a target grade
- Works without requiring account creation or login
| - 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) | 8 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 8 | 6 |
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| Citation Flow (Majestic) | 25 | 20 |
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| Referring domains (Majestic) | 16 | 5 |
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GradeCal
Drywall Planner