| What it does | Free online countdown timer with custom sounds, themes, and sharing
| Free construction calculators for concrete, landscaping and home projects
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| Stage | Not given
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| Founded | Not given
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Custom duration and end time settings
- Multiple sound alert options
- Fullscreen mode for focused display
- Shareable timer links
- Keyboard shortcuts for quick control
- Mobile optimized responsive design
- Saved preferences between sessions
- Browser notifications
- Up to 24 hour timer duration
- Popular preset timers
| - Square footage calculator for rooms, homes and lots
- Concrete calculator for slabs, footings, walls and columns
- Stair calculator with code checks for risers and treads
- Gravel and landscaping calculators for driveways and paths
- Roofing calculator for shingles and squares
- Deck calculator for boards, joists and screws
- Mulch calculator for garden beds in yards or bags
- Drywall calculator for sheets and screws
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| What makes it different | - Completely free with no hidden costs or premium features
- No registration or personal information required
- Privacy focused with no tracking or data collection
- Works on all devices without downloads or installations
- Shareable timer links for collaborative timing
| - Every formula is shown, tested and sourced
- Calculations run in your browser with no data sent anywhere
- All numbers come from named sources with citations and data sheets
- Independent and not affiliated with any manufacturer or retailer
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 14 ▼ −1 (down) since last check | 1 ● no change since last check |
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| Trust Flow (Majestic) | 18 | 5 |
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| Citation Flow (Majestic) | 21 | 11 |
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| Referring domains (Majestic) | 487 | 2 |
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CalcQuarry