| What it does | Free, real-time 401(k) calculator showing contributions, employer match and compound growth
| Free tool to plan your fasting schedule and eating windows with personalized nutrition targets
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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 | - Live, real-time calculations that update as you type
- Breaks down balance into contributions, employer match and investment growth
- No signup or account required
- All calculations run in the browser with no data stored
- Updated for 2026 IRS contribution limits
- 11 focused calculators for different 401(k) scenarios
- Visual chart showing balance growth over time
- Employer match calculator
- Roth vs traditional comparison tool
- Early withdrawal penalty calculator
| - Multiple fasting protocols including 16:8, 14:10, 18:6, 20:4, and OMAD
- Custom fasting hours option
- Personalized daily calorie goals using Mifflin-St Jeor equation
- Daily protein targets based on ISSN standards
- Metabolic milestones tracking ketone switch and autophagy
- Visual timeline of fasting schedule
- Export schedule as image or text
- No signup required
- Related tools including Intermittent Fasting Timer and Template
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| What makes it different | - Fully transparent formulas shown for every calculation
- IRS-accurate calculations verified against official guidance
- No advertising or sponsored products
- Complete privacy with client-side-only calculations
- Worked examples showing calculations step-by-step
| - No signup required to use calculators and export plans
- Personalized targets based on peer-reviewed research formulas
- Tracks metabolic phases like ketone switch and autophagy timing
- Plain-English educational content alongside tools
- Treats outputs as planning estimates with clear safety disclaimers
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ● no change since last check | 15 ● no change since last check |
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| Trust Flow (Majestic) | 17 | 20 |
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| Citation Flow (Majestic) | 10 | 23 |
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| Referring domains (Majestic) | 19 | 83 |
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401k Calculator
Intermittent Fasting Calculator