| What it does | Free online calculators, converters, and developer tools that run in your browser
| Free online calculators for math, finance, health, pregnancy, and more
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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
| - 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 | - 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
| - 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) | 4 ● no change since last check | 2 ● no change since last check |
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| Trust Flow (Majestic) | 3 | 1 |
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| Citation Flow (Majestic) | 35 | 13 |
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| Referring domains (Majestic) | 6 | 1 |
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PlayTools
InstantCalcs