| What it does | Free calculators for sleep, mental wellbeing, recovery, fitness, nutrition and healthy living
| Free browser-based calculator showing every 2026 Etsy fee on a listing, including DDP tariff charges
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - 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
| - Line-by-line breakdown of all 2026 Etsy fees
- Separate DDP tariff charge line
- 15% Etsy fee on tariff charge calculated
- Offsite Ads fee options (15% or 12%)
- Real-time updates as you type
- All calculations run in browser
- Chrome extension version available
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| What makes it different | - 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
| - No data is sent to servers; all processing happens in your browser
- Maintained and checked against published Etsy policy
- Same engine powers both web version and Chrome extension
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 17 ● no change since last check | 4 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 9 |
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| Citation Flow (Majestic) | 10 | 18 |
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| Referring domains (Majestic) | 16 | 6 |
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WowSleepCalculator
Etsy Tariff Calculator