| What it does | Free calculators and file tools that run entirely in your browser
| 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 | - 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
| - 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 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
| - 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 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 0 | 1 |
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| Citation Flow (Majestic) | 17 | 17 |
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| Referring domains (Majestic) | 4 | 2 |
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GrowthMath