| What it does | Free online calculators with step-by-step workings and cited sources, embeddable on any website
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| Stage | Startup
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| Founded | 2026
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| Based in | GB
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| Pricing model | Freemium
| Free
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| Pricing | Free plan: all calculators with ads, 5 saved calculations, 1 private link. Personal: $29 USD/year or $5/month with unlimited saved calculations, no ads, PDF and CSV export. Advisor: $149 USD/year or $19/month with client-facing branding, scenarios grouped by client, one PDF per client, and priority
| Free to use.
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| Key features | - 1,336 calculators across 23 categories
- Step-by-step calculation workings shown live
- Cited sources on every calculator page
- Save and compare scenarios side by side
- Embed calculators on your website with three lines of code
- Update shared figures once across all embeds
- Export results as PDF or CSV
- Reusable assumption profiles
- Private read-only links with expiration
- Client management and reporting features
| - Country-specific calculators for US, UK, Canada, Australia, New Zealand, South Africa, Ireland, Germany, and Netherlands
- Annual rate guides with tax-year specificity
- Free downloadable log templates in Excel, Google Sheets, and PDF
- Source citations linking calculations to IRS, HMRC, CRA, and ATO publications
- Support for multiple vehicle types and mileage purposes
- Miles and kilometers input support
- Reimbursement policy and form templates
- Direct monitoring of government rate changes and updates
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| What makes it different | - Visible calculation working for every result, so you can inspect the math rather than trust blindly
- Every calculator declares its method and sources in code with checked examples
- Free embedding with your own branding and no tracking of readers
- Similar calculators are consolidated to one preferred page to avoid duplicate search results
| - Official source citations on every rate and calculation
- No affiliate relationships or commercial sponsorships influencing calculations
- Single workflow from rate lookup to estimate to recordkeeping
- Tax-year specific rates updated annually from official government sources
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 23 ▼ −1 (down) since last check | 18 ● no change since last check |
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| Trust Flow (Majestic) | 24 | 5 |
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| Citation Flow (Majestic) | 34 | 22 |
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| Referring domains (Majestic) | 88 | 22 |
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CalculatorFox