| What it does | Free Coast FIRE calculator to estimate your retirement savings milestone
| Measure rooms and plan DIY flooring projects with feet, inches and metric units
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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
| Free
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| Pricing | Not given
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| Key features | - Calculate invested assets needed today for Coast FIRE milestone
- Interactive calculator with real-time updates as you edit inputs
- Compare multiple contribution scenarios with projected retirement assets
- Explore return assumptions with sensitivity analysis
- Five related FIRE calculators: Coast, Barista, Fat, Lean, and FIRE Number
- Customize metro area budget or enter your own annual spending
- Transparent formulas and documented verification checks
- All calculations performed in browser with no data uploads
| - Calculate area in feet, inches, decimal feet, meters and centimeters
- Support for rectangular, L-shaped, circular and triangular rooms
- Add up to 20 rooms together
- Automatic unit conversion between feet, inches and metric
- Flooring calculator for waste allowance and whole-box rounding
- Handles closets, alcoves and cutouts
- View formulas and assumptions
- No account required
- Fractional inches support
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| What makes it different | - Free with no account required and calculations run entirely in your browser
- Transparent assumptions with linked original research and sources
- Deterministic scenarios and educational model focused on inspection and understanding
- Multiple complementary calculators for different retirement planning questions
- Public correction process and documented model updates
| - Correctly handles feet and inches together without requiring manual conversion
- Includes measuring diagram for L-shaped rooms
- Explains the difference between measured area, waste allowance and whole-box rounding
- Calculations stay private in your browser with no account needed
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 6 ▼ −1 (down) since last check | 14 ● no change since last check |
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| Trust Flow (Majestic) | 10 | 7 |
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| Citation Flow (Majestic) | 20 | 16 |
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| Referring domains (Majestic) | 12 | 23 |
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