macalc — Everyday Calculator MCP Server
A curated core of 15 well-scoped calculator tools — income tax (France, US, UK, Canada), gross-to-net salary, mortgage, compound interest, loans, VAT, percentages, BMI, TDEE — with on-demand access to the full macalc catalog of 446 calculators (22 categories, 8 countries' tax systems) through a discovery + dispatcher workflow. Free, no API key required.
Core tools (default profile)
| Tool | What it does |
|---|---|
calculate_french_income_tax |
French income tax 2026 (Article 197 CGI, family quotient) |
calculate_french_salary |
French gross → net salary 2026 (cadre / non-cadre / civil servant) |
calculate_us_federal_tax |
US federal income tax 2026 (IRS brackets + standard deduction) |
calculate_uk_income_tax |
UK income tax 2025/26 (HMRC bands, allowance taper) |
calculate_canada_federal_tax |
Canadian federal income tax (CRA brackets + BPA) |
calculate_mortgage |
Monthly payment, total interest, amortization schedule |
calculate_compound_interest |
Lump-sum compound growth with yearly breakdown |
calculate_loan_payment |
Generic amortizing loan (term in months) |
calculate_percentage |
Percent of total / percent change / what-percent |
calculate_vat_generic |
Add or remove VAT/GST/sales tax at any rate |
calculate_bmi |
Body Mass Index + WHO category |
calculate_tdee |
Maintenance calories from BMR + activity level |
list_bundles |
Discover the 31 thematic bundles of the full catalog |
get_bundle_tools |
List the tools inside one bundle |
call_any_calculator |
Invoke any of the 446 hosted calculators by name |






