| What it does | Free roof pitch calculator for rise, run, degrees, slope, and multiplier
| Free calculators for sleep, mental wellbeing, recovery, fitness, nutrition and healthy living
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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 | - Converts rise and run to pitch ratio (X:12 format)
- Displays roof pitch in degrees
- Computes pitch multiplier for area conversion
- Calculates rafter length
- Roof area calculator for sloped surfaces
- Shingle bundle quantity calculator
- Transparent formula display
- Input mode selection for rise/run, angle, or slope percent
| - Sleep Cycle Calculator for planning bedtimes based on 90-minute cycles
- Bedtime Calculator to find sleep time based on wake-up time and duration
- Wake-Up Time Calculator based on bedtime and sleep cycles
- Sleep Debt Calculator to estimate missed sleep over a week
- Caffeine Half-Life Calculator to estimate caffeine remaining in body
- How Much Sleep Do I Need Calculator with age-based estimates
- 20 calculator hubs across Sleep, Mind, Body, Family and Lifestyle categories
- Transparent formulas showing the math behind each result
- Evidence-based references citing primary sources
- Editorial and clinical review for sensitive health tools
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| What makes it different | - Free with no signup, account, or sales-quote forms required
- Transparent formulas and calculation methodology
- Automated checks for pitch conversions and invalid inputs
- Multiple interconnected roof calculators in one suite
| - Private calculations in browser with no account required or personal data selling
- Transparent formulas and methodology for every calculator
- Evidence-based content citing primary sources not rewrites
- Regularly updated formulas with versioning and review dates
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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 | 17 ● no change since last check |
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| Trust Flow (Majestic) | 19 | 0 |
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| Citation Flow (Majestic) | 22 | 10 |
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| Referring domains (Majestic) | 12 | 16 |
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