| What it does | Free online calculators for everyday math, percentages, dates, conversions, and more
| Weekly propane and heating oil prices by state with free home heating cost calculators
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| Pricing model | Free
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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
| - Weekly EIA residential propane prices for 38 states
- Regional and state price trends
- Tank fill cost estimates for common tank sizes
- Year-over-year price comparison
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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
| - Built from public government data with every price dated and linked to its source
- No sign-up required, everything is free
- Independent tool not affiliated with fuel dealers or utilities
- Calculators use actual government prices and normal weather for accurate estimates
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change 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 | 0 |
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| Referring domains (Majestic) | 2 | 0 |
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CalcWell