| What it does | Free fitness calculators for strength, training, nutrition and body composition
| Free personal finance calculators that show the real math behind the number
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| Pricing model | Free
| Free
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| Pricing | Not given
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| Key features | - 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
| - Debt Snowball vs. Avalanche calculator
- Student Loan Repayment calculator
- Credit Card Payoff Calculator
- Compound Interest Calculator
- Mortgage Refinance Calculator
- Retirement Catch-Up Calculator
- 401(k) Early Withdrawal Calculator
- 50/30/20 Budget Calculator
- Emergency Fund Calculator
- Hand-verified formulas with plain-English explanations
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| What makes it different | - 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
| - Shows the actual math behind each calculation instead of a black box
- Every formula is hand-verified before publishing
- No signup, email wall, or spreadsheet download required
- Official figures checked directly against government sources
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | Not checked yet ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 0 |
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| Citation Flow (Majestic) | 13 | 17 |
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| Referring domains (Majestic) | 1 | 1 |
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RepMaths
TheCalcNerd