| What it does | Free attendance calculator for students to track how many classes they can safely miss
| 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 how many remaining classes can be missed while staying at target
- Determine how many consecutive sessions must be attended to recover if below threshold
- Track attendance for multiple subjects separately
- Browser-based with no sign-up or account required
- All calculations performed locally without sending data to servers
| - 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 | - No account or sign-up needed – instant access with no data collection
- All calculations happen in your browser – attendance data never leaves your device
- Supports multiple institutional requirements with 75%, 80%, 85%, and 90% target options
- Tracks multiple subjects simultaneously to prevent any single module from sliding below threshold
- Built and maintained by a single developer focused on honest, accurate answers
| - 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) | 1 | 6 |
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| Citation Flow (Majestic) | 19 | 20 |
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| Referring domains (Majestic) | 3 | 5 |
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CalcAttendance
Drywall Planner