| What it does | Free, real-time 401(k) calculator showing contributions, employer match and compound growth
| Free online calculators for math, finance, health, pregnancy, and more
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| Pricing model | 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
| - BMI calculator for health assessment
- Ovulation and pregnancy tracking calculators
- Percentage and fraction calculations
- Loan and mortgage financial calculators
- Construction calculators for measurements
- Unit conversion tools
- FFMI and body composition analysis
- Instant results with no processing delays
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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
| - Completely free with no signup or registration required
- Privacy-focused with local browser processing
- Accurate calculations based on industry-standard formulas
- 73 calculators across multiple categories
- Clean and intuitive user interface
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 8 ▲ +1 (up) since last check | 11 ▲ +6 (up) since last check |
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| Trust Flow (Majestic) | 17 | 1 |
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| Citation Flow (Majestic) | 10 | 13 |
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| Referring domains (Majestic) | 19 | 1 |
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401k Calculator
InstantCalcs