| What it does | Free online calculators and unit converters for finance, health, and everyday calculations
| Free on-screen ruler and measuring tools with calculators
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| Stage | Established
| Startup
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| Founded | Not given
| 2026
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| Based in | Not given
| AE
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| Pricing model | Free
| Free
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| Pricing | Not given
| Free tools; RulerNest Pro (ad-free version with saved calibrations) coming soon with no pricing announced yet.
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| Key features | - BMI and health calculators
- EMI and loan payment calculators
- Compound interest and investment projections
- US mortgage calculator with amortization tables
- TDEE and calorie calculators
- Currency converters with live exchange rates
- Embeddable calculator widgets for publishers
- Browser-based calculations for privacy
- Transparent formulas and source documentation
- Country-specific tax and payroll tools
| - On-screen ruler calibrated with bank card to 0.5 mm precision
- Unit converter for length, weight, temperature, area, volume
- BMI calculator with WHO bands
- Loan and EMI calculator with interest schedule
- Printable ruler for A4 and Letter paper
- No data collection or email required
- Offline access via service worker
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| What makes it different | - Instant private results stored in browser only
- Transparent formulas and assumptions visible for every calculation
- Over 997 free tools with no account required
- Source-backed reference data and country-specific tools
- Embeddable widgets for educators and publishers
| - All calculations performed locally with no data sent to servers
- 23 specialized tools all in one place for measuring and everyday calculations
- Works offline and saves preferences locally on your device
- Designed specifically for United States and Canada with Imperial units as default
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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 | 0 |
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| Citation Flow (Majestic) | 19 | 0 |
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| Referring domains (Majestic) | 5 | 0 |
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Calxo AI
RulerNest