| What it does | US paycheck calculator for all 50 states and DC with exact take-home pay calculations
| Free fitness calculators for strength, training, nutrition and body composition
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| Stage | Not given
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| Founded | Not given
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| Based in | US
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - Interactive calculator for salary and state with instant take-home results
- Effective and marginal tax rate calculations
- Live state-by-state comparison map
- 401(k) and pre-tax deduction modeling
- 51 state-specific calculators with local tax rules
- Property tax calculators for all counties
- Hourly to annual income conversions
- Self-employment and gig worker tax calculations
| - One-rep max estimation from weight and reps
- Bench press, squat, deadlift and overhead press max calculators
- 5/3/1 training cycle generator
- TDEE and BMR calculators
- Macro and protein intake calculators
- Body fat percentage estimation using US Navy method
- Barbell plate loading calculator
- RPE and RIR conversion chart
- Calorie deficit and weight loss timeline calculator
- Warm-up set generator
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| What makes it different | - Built directly on official 2026 IRS and state DOR data updated quarterly
- Accurate to within $50/year for most income levels
- Privacy-first: all calculations run in-browser, no data sent to servers
- Open datasets available for researchers and journalists
- Reproducible calculation engine verified against official sources
| - All formulas and sources cited on every page
- No sign-up required to use calculators
- Built on established, peer-referenced formulas from fitness and sports nutrition literature
- Works in both pounds and kilograms
- Built by a lifter
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 7 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 8 | 0 |
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| Citation Flow (Majestic) | 19 | 13 |
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| Referring domains (Majestic) | 26 | 1 |
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StateTakeHome
RepMaths