| What it does | Free online calculators for everyday math, percentages, dates, conversions, and more
| Free calculators for home and yard projects
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| Pricing model | Free
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| Pricing | Not given
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| Key features | - Percentage calculator for discounts, tips, and percent change
- Date and time calculators for age, date differences, and time zones
- Math calculators for fractions and statistics
- Financial calculators for interest and taxes
- Unit converters for length, weight, and temperature
- Education tools for GPA and grade calculations
- Instant calculations with no server responses
- Mobile friendly responsive design
- Educational explanations and formulas included
| - Scale drawings for projects to verify inputs
- Customizable material prices and weights from suppliers
- Pool and pond calculators for volume and salt requirements
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| What makes it different | - All calculations run in your browser with no data storage or transmission
- Instant client-side JavaScript calculations with no server delay
- Privacy-first approach where numbers never leave your device
- Fully responsive design works on all device types
- Educational content with formulas and examples for each calculator
| - No sign-up or email required to use calculators
- Shows formula and formula reasoning for each calculator
- Customizable inputs with your own supplier data
- Part of Ruler family including CarRuler and PolicyRuler
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 3 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 4 | 0 |
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| Citation Flow (Majestic) | 1 | 1 |
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| Referring domains (Majestic) | 2 | 3 |
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CalcWell
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