| What it does | Free epoxy resin calculator for mold batches, casting voids and tabletop coatings
| Free Karvonen formula heart rate zone calculator
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| Stage | Not given
| Established
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| Founded | Not given
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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 | - Calculate mold cavity volumes from dimensions or enter known volumes
- Combine multiple molds and piece counts in a single batch plan
- Split totals using product volume or weight ratios
- Add material allowance percentages for wastage
- Estimate kit quantities and material costs
- Support metric and US imperial units
- Save projects locally in browser without creating an account
- Export batch sheets as PDF or CSV
- Calculate deep pour epoxy with layer allocation
- Calculate tabletop coatings with edge coverage
| - Five personalized training zones based on heart rate reserve
- Accounts for resting heart rate and cardiovascular fitness
- Custom maximum heart rate input from multiple formulas
- No signup required, runs entirely in browser
- Weekly resting heart rate logging and progress tracking
- Zone-specific training guidance for different goals
- Shareable and printable zone results
- Embeddable calculator widget for websites
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| What makes it different | - Published formulas and methodology transparent with no proprietary hidden calculations
- Calculations cross-checked against a separate Python implementation using 100-digit decimal arithmetic
- Handles irregular molds using known volumes without forcing geometry estimates
- Shares batch plans via URL without storing projects on servers
| - More accurate than age-only formulas, accounting for individual cardiovascular fitness
- Zones adapt as your fitness improves and resting heart rate drops
- Based on 1957 Karvonen research used by coaches and sports scientists
- Independent, no data collection or external servers
- No ads inside the calculator, free to use with optional embedding
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | 11 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 19 |
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| Citation Flow (Majestic) | 19 | 25 |
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| Referring domains (Majestic) | 6 | 40 |
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ResinBatch
CalculateMyHeartRate