| What it does | Date, deadline and time calculators with visible assumptions and sources
| Free calculators for everyday money, health, and time questions
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 184 calculators across 53 categories
- Shows counting rules and assumptions with each result
- Local-first processing with no data sent to servers
- Holiday and weekend calendar selection
- Business day counting
- Date arithmetic (add or subtract days, weeks, months, years)
- Sleep cycle planner with NIH-based 80-100 minute cycles
- Time zone conversion with DST handling
- Save results as images or add to calendar
- Schengen visa 90/180 day rolling window auditing
| - 38 free calculators for money, health, and time questions
- Mortgage calculator with monthly payment, taxes, insurance, and amortization schedule
- Debt payoff calculator comparing snowball vs avalanche strategies
- Instant results with no loading screens
- Privacy-first: calculations run in browser only
- Support for 150+ currencies
- Printable worksheets for budgets, trackers, and savings challenges
- 55 in-depth guides covering financial and health topics
- Standard published formulas used by lenders and institutions
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| What makes it different | - Shows the source and counting rule beside every answer
- No sign-up or account required to use any calculator
- All inputs stay in your browser for privacy
- Comprehensive coverage across 53 life and work categories
- Higher-risk calculators include prompts to verify with professionals
| - No sign-ups, accounts, or downloads required
- Real formulas from lenders and scientific institutions instead of estimates
- Privacy-first: everything runs in browser with no data collection
- Instant results that update as you type
- Clean, clutter-free interface with no ads or noise
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 3 |
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| Citation Flow (Majestic) | 0 | 9 |
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| Referring domains (Majestic) | 0 | 8 |
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