| What it does | Free online calculators and tools that run entirely in your browser
| Free Amazon FBA calculators and seller tools with verified 2026 fee rates
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| Stage | Not given
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| CN
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free core tools with no signup. Pro plan: $29.99/month or $299/year (save 17%). One-time fee audit service: $299 for up to 50 SKUs, $4 per extra SKU.
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| Key features | - Paycheck calculator for all 50 US states and DC
- 2025-2026 tax deduction calculators for overtime, tips, and charitable giving
- PDF to Word converter with scanned page support
- Mortgage and auto loan calculators
- Image resizing, format conversion and compression tools
- JSON formatter and validator
- Retirement and investment calculators
- Everyday calculators for time, measurements and fitness
| - FBA Profit Calculator with all hidden fees
- PPC Analyzer for ACOS and ROAS calculation
- Fee Simulator comparing fulfillment methods
- Listing Grader with optimization tips
- Review Analyzer for competitive insights
- Inventory Optimizer with restock alerts
- Cost Tracker for expense management
- Real-time exchange rate conversion updated every 5 minutes
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| What makes it different | - All tools run entirely in browser with no server upload
- No signup, download or installation required
- Over 100 free calculators and tools with no watermarks or ads on results
- Updated daily to reflect new tax laws and government guidance
| - 50+ free tools with no signup, login or credit card required
- Fee rates verified monthly with open-source data published under CC BY 4.0
- Built by an 8-year Amazon FBA seller addressing real seller pain points
- Supports multiple marketplaces: Amazon US/EU/UK/JP/CA/AU, Temu, TikTok Shop, and Etsy
- Transparent formulas using industry-standard calculations verifiable by users
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | 23 ● no change since last check |
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| Trust Flow (Majestic) | 2 | 0 |
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| Citation Flow (Majestic) | 26 | 16 |
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| Referring domains (Majestic) | 45 | 10 |
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Tools Berry
ylishi.tools