| What it does | Free fitness calculators for strength, training, nutrition and body composition
| Free calculators for marketers, affiliates and store owners
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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 | - 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
| - ROAS calculator with break-even analysis
- CPA and CPM calculator for ad costs
- LTV and CAC calculators for e-commerce
- Affiliate earnings and EPC calculator
- UTM link builder for GA4 tracking
- A/B test significance and sample size calculator
- Shopify profit calculator
- YouTube earnings estimator
- Affiliate Link Checker Chrome extension
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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
| - Runs entirely in browser with no signup required
- Private calculations that never leave your device
- Every tool explains formulas, benchmarks and common mistakes
- Completely free with no premium plans
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | Not checked yet ● no change since last check |
| Trust Flow (Majestic) | 0 | 1 |
| Citation Flow (Majestic) | 13 | 17 |
| Referring domains (Majestic) | 1 | 2 |