| What it does | Free dog age calculator and veterinary research-based pet tools
| Free EZ grader chart and easy grade calculator for teachers and students
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| Free
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| Key features | - 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
| - Instant Quick Grade & EZ Grader Test Chart
- Customizable Standard and Plus/Minus Grading Scales
- Weighted Course Grade & Final Exam Simulator
- Printable & Downloadable PDF Grading Charts
- Offline PWA Utility Support
- GPA calculations for semester and cumulative grades
- Grade curve calculator with multiple curving methods
- CGPA to percentage converter for 25 universities
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| What makes it different | - 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)
| - Free with no sign-up required
- Calculations run entirely in your browser with no data uploaded
- Works offline as a Progressive Web App
- Print charts or save as PDF without site navigation
- Transparent mathematical formulas documented and tested for accuracy
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 5 ▲ +2 (up) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 10 | 0 |
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| Citation Flow (Majestic) | 19 | 17 |
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| Referring domains (Majestic) | 12 | 3 |
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petcalc
Easy Grade Tool