| What it does | Free, real-time converter for tons to kilograms with exact SI constants
| Free dog age calculator and veterinary research-based pet tools
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| Pricing model | Free
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| Pricing | 100% free, no signup required
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| Key features | - Real-time conversion as you type
- Supports three ton types: metric, US short, and UK long
- Displays exact conversion constant with every result
- No signup, no account required
- Bidirectional conversion toggle between tons and kilograms
| - Dog age conversion by size (small, medium, large, giant breeds)
- AKC chart showing human-year equivalents
- DNA formula comparison (UC San Diego 16 × ln(age) + 31)
- Life stage identification (puppy, young adult, mature adult, senior, end of life)
- Dog lifespan by breed tool
- Puppy weight calculator
- Dog food calculator
- Dog calorie calculator
- Dog pregnancy calculator
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| What makes it different | - Uses exact SI conversion constants rather than rounded approximations
- All calculations run client-side with no server calls or data storage
- Defaults to metric ton, the international standard
- Completely transparent methodology
| - Research-based: built on peer-reviewed studies and veterinary guidelines from AAHA and AVMA
- Independent and transparent with no brand sponsorship or bias
- Mobile-friendly design that works on phones
- Multiple calculation methods shown for comparison (AKC chart and DNA formula)
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 6 ● no change since last check | 5 ▲ +2 (up) since last check |
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| Trust Flow (Majestic) | 17 | 10 |
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| Citation Flow (Majestic) | 7 | 19 |
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| Referring domains (Majestic) | 25 | 12 |
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Ton to Kg
petcalc