| What it does | Free size converter for clothing, shoes, rings, bras, accessories, sports gear, and bedding across US, UK, EU and international standards
| Independent calculator to check if a home battery pays for itself in your situation
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| NL
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Instant converters for 18 product categories
- Shoe size conversion between US, UK, EU, CM, and JP
- Ring size conversion between US, UK, EU, and mm
- Bra size conversion across US, UK, EU, FR/ES, and IT
- Kids clothing and shoe sizes by age, height, and weight
- Bike frame size finder from height
- Helmet size converter from head circumference
- Mattress and bed size comparison in inches and centimeters
| - Compares battery models from 23 brands on payback time and net result after 15 years
- Calculates with real hourly EPEX prices for dynamic energy contracts
- Processes the end of net metering from 1 January 2027
- Provides negative buying advice if purchase is not worthwhile
- No account or email required
- Generates 10-page PDF advice report with lowest prices from 11 shops
- Free 22-page PDF handbook about home batteries
- Analyzes consumption and solar generation hour by hour for full year
- Three scenarios: pessimistic, most likely and optimistic outcomes
- Updates prices from 11 online shops every morning automatically
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| What makes it different | - Charts built from standard international sizing references reviewed for consistency
- Covers 18 focused tools across fashion, accessories, sports gear and bedding
| - Truly independent: sells no batteries, has no arrangements with installers, publishes negative buying advice
- No personal data collection: zero signup required, immediate results without email
- Built from personal need: creator did his own calculations after a misleading sales pitch
- Comprehensive research: 384 example households analyzed in 26,112 calculations
- Shows all calculation assumptions: transparent methodology with public data sources
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 17 ▲ +1 (up) since last check | 16 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 18 |
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| Citation Flow (Majestic) | 19 | 24 |
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| Referring domains (Majestic) | 17 | 18 |
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