| What it does | Free one rep max calculator with seven formulas and percentage charts
| Know what the road will cost before you go
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| Founded | Not given
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| Based in | Not given
| US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 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
| - Calculate fuel cost by distance, MPG and gas price
- Cost per mile and cost per person breakdown
- Support for miles/MPG and kilometres/L100km units
- Optional toll and parking adjustments
- State-by-state gas price reference data
- Gas cost lookup table by distance and fuel economy
- Round trip distance option
- Vehicle EPA fuel economy database search
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| What makes it different | - 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)
| - Free with no account required
- Works directly in your browser
- Weekly updated gas price data by state
- Accounts for driver and passenger splits
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 20 ● no change since last check |
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| Trust Flow (Majestic) | 0 | 2 |
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| Citation Flow (Majestic) | 0 | 21 |
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| Referring domains (Majestic) | 0 | 8 |
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OneRepMax
Cost of Gas Calculator