| What it does | Free fitness calculators for strength, training, nutrition and body composition
| Free calculators and file tools that run entirely in your browser
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| Stage | Not given
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| Founded | 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
| - Word and character counter
- PDF merge and manipulation tools
- Image compression and format conversion
- Currency converter with live exchange rates
- JSON formatter and validator
- Recipe scaler for cooking measurements
- Percentage and fraction calculators
- Time zone converter and date calculations
- Health calculators for BMI and TDEE
- Local browser processing with no uploads
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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
| - All processing happens locally in your browser with no file uploads to servers
- Completely free with no accounts, login requirements or hidden payments
- No tracking or advertising, with optional cookie-free analytics only
- Comprehensive guides and explanations for every tool and calculation
- Independently maintained by a single developer focused on quality and accuracy
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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 | 1 ● 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 | 4 |
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RepMaths
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