| What it does | Free, real-time 401(k) calculator showing contributions, employer match and compound growth
| Free exact age calculator in years, months and days for educators, clinicians and parents
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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
| - Instant calculation of exact age in years, months, and days
- Multiple output formats including test format (Y;M;D), decimal years, total days, weeks, and hours
- Automatic leap year handling
- Exact month length calculation using actual days per month
- Custom reference date selection for past or future dates
- No registration or sign-up required
- Browser-based calculation with no data storage
- Clean interface without ads or clutter
- Results in standardized test format
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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
| - Built specifically for professionals who need accurate age calculations for standardized assessments and school placement decisions
- Completely private with all calculations done in your browser and no data collection
- Handles edge cases that trip up manual calculation like leap years and month-end dates
- Free alternative to discontinued publisher tools that professionals previously relied on
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ● no change since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 17 | 3 |
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| Citation Flow (Majestic) | 10 | 20 |
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| Referring domains (Majestic) | 19 | 59 |
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401k Calculator
Chronological Age Calculator