| What it does | Free online calculators, converters, and developer tools that run in your browser
| Free online calculators for finance, health, dates, and everyday math
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| Stage | Startup
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| Founded | 2025
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| Based in | Not given
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 68 free tools across finance, development, and utilities
- Loan repayment and affordability calculators with total interest calculations
- Currency converter with 30 world currencies and live exchange rates
- JSON formatter, validator, and minifier with syntax highlighting
- Date and time tools including age calculator and timezone converter
- Runs entirely in browser with no server uploads
- Works offline after initial page load
| - 19 calculators across health, finance, math and everyday categories
- Client-side calculations with no server data transmission
- Transparent formulas and calculation methodology
- Health calculators follow WHO and CDC standards
- Financial tools use standard industry formulas and current IRS tax brackets
- Fully responsive and works on desktop, tablet and smartphone
- No signup required or account creation needed
- Lightweight and fast with no tracking scripts
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| What makes it different | - No account or sign-up required
- Runs entirely client-side in your browser with no data sent to servers
- All tools are completely free with no usage limits
- Works offline after initial page load
- Privacy-first approach with no data collection or transmission
| - All calculations run entirely in your browser with no data sent to servers
- Transparent formulas so you understand how results are calculated
- Health formulas endorsed by WHO and CDC standards
- Instant results with no loading screens or popups
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 4 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 3 | 0 |
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| Citation Flow (Majestic) | 35 | 0 |
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| Referring domains (Majestic) | 6 | 0 |
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PlayTools
CalcDeep