| What it does | Free online calculators with step-by-step workings and cited sources, embeddable on any website
| Free exact age calculator in years, months and days for educators, clinicians and parents
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| Stage | Startup
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| Founded | 2026
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| Based in | GB
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| Pricing model | Freemium
| Free
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| Pricing | Free plan: all calculators with ads, 5 saved calculations, 1 private link. Personal: $29 USD/year or $5/month with unlimited saved calculations, no ads, PDF and CSV export. Advisor: $149 USD/year or $19/month with client-facing branding, scenarios grouped by client, one PDF per client, and priority
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| Key features | - 1,336 calculators across 23 categories
- Step-by-step calculation workings shown live
- Cited sources on every calculator page
- Save and compare scenarios side by side
- Embed calculators on your website with three lines of code
- Update shared figures once across all embeds
- Export results as PDF or CSV
- Reusable assumption profiles
- Private read-only links with expiration
- Client management and reporting features
| - 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 | - Visible calculation working for every result, so you can inspect the math rather than trust blindly
- Every calculator declares its method and sources in code with checked examples
- Free embedding with your own branding and no tracking of readers
- Similar calculators are consolidated to one preferred page to avoid duplicate search results
| - 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) | 23 ▼ −1 (down) since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 24 | 3 |
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| Citation Flow (Majestic) | 34 | 20 |
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| Referring domains (Majestic) | 88 | 59 |
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CalculatorFox
Chronological Age Calculator