| What it does | Unlimited web calculators powered by AI
| Free one rep max calculator with seven formulas and percentage charts
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| Stage | Not given
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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 | - AI-powered calculator generation in real-time
- Thousands of ready-to-use calculators
- Search and discovery by name or topic
- Error-free calculations reviewed by AI
- Local browser-based computation for privacy
- Multiple calculator categories including health, finance and math
- Responsive design for any device
- No paywalls or usage limits
| - Seven 1RM formulas (Epley, Brzycki, Lombardi, Lander, Mayhew, O'Conner, Wathen)
- Average of all formulas as recommended result
- Percentage chart from 100% to 50% of 1RM
- Rep-max table for 1RM through 12RM
- Support for kilograms and pounds
- Exercise-specific formula defaults
- RPE adjustment for reps in reserve
- Multiple exercise categories (chest, back, legs, shoulders, arms, Olympic)
- Browser-based history with no account
- Warm-up sets calculator and rep-max table
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| What makes it different | - AI generates custom calculators in seconds based on user descriptions
- All calculators run locally in your browser for data privacy
- Continuously growing unlimited collection with no paywalls
- AI-powered tools adapt to specific user needs through reasoning
| - Uses seven published formulas instead of one, showing average and range for transparency
- No account, sign-up, or data storage required
- Covers dozens of exercises with exercise-specific guidance and lift variations
- Warns about formula accuracy limits and when estimates are unreliable
- Includes linked tools for related calculations (DOTS, Wilks, training max, FFMI, VO2)
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 28 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 34 | 0 |
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| Referring domains (Majestic) | 472 | 0 |
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OneRepMax