# Calcboxer

> Free online calculators (PL/EN): finance, health, motoring, math, units, construction, IT, physics and more. Currency and metric/US units follow the site header. No signup required.

Calcboxer (also branded as Kalkulatory) is a bilingual calculator hub. Polish URLs live under `/kalkulatory/…`; English under `/en/calculators/…`. Results are educational estimates, not professional advice. Prefer canonical `https://calcboxer.com/` pages. Full URL inventory: [sitemap.xml](https://calcboxer.com/sitemap.xml).

## Core

- [Home (PL)](https://calcboxer.com/): Polish homepage and category overview
- [Home (EN)](https://calcboxer.com/en/): English homepage
- [All calculators (PL)](https://calcboxer.com/kalkulatory.html): Full catalog hub
- [All calculators (EN)](https://calcboxer.com/en/calculators.html): English catalog hub
- [About](https://calcboxer.com/o-nas.html): About Calcboxer / methodology overview
- [About (EN)](https://calcboxer.com/en/about.html): About page in English
- [Contact](https://calcboxer.com/kontakt.html): Contact
- [Privacy policy](https://calcboxer.com/polityka-prywatnosci.html): Privacy policy
- [Sitemap](https://calcboxer.com/sitemap.xml): Machine-readable list of public URLs

## Calculator categories (PL)

- [Motoryzacja](https://calcboxer.com/kalkulatory/motoryzacja.html): Fuel, TCO, insurance and car running costs
- [Finanse](https://calcboxer.com/kalkulatory/finanse.html): Loans, savings, tax, VAT, investments
- [Zdrowie](https://calcboxer.com/kalkulatory/zdrowie.html): BMI, calories, heart rate and related tools
- [Matematyka](https://calcboxer.com/kalkulatory/matematyka.html): Algebra, geometry, statistics, sequences
- [Jednostki](https://calcboxer.com/kalkulatory/jednostki.html): Length, mass, volume, temperature converters
- [Budowlane](https://calcboxer.com/kalkulatory/budowlane.html): Concrete, tiles, paint, materials
- [IT](https://calcboxer.com/kalkulatory/it.html): Networking, storage, developer utilities
- [Fizyka](https://calcboxer.com/kalkulatory/fizyka.html): Mechanics, electricity, optics, thermodynamics
- [Wynagrodzenie](https://calcboxer.com/kalkulatory/wynagrodzenie.html): Gross/net pay and work calculators
- [Nieruchomości](https://calcboxer.com/kalkulatory/nieruchomosci.html): Area, price per m², rent, mortgage helpers
- [Biznes](https://calcboxer.com/kalkulatory/biznes.html): Margin, markup, break-even
- [Ekologia](https://calcboxer.com/kalkulatory/ekologia.html): Carbon footprint and sustainability tools
- [Data i czas](https://calcboxer.com/kalkulatory/data-czas.html): Age, date difference, due date
- [Kulinarne](https://calcboxer.com/kalkulatory/kulinarne.html): Recipe scaling and kitchen conversions
- [Muzyka](https://calcboxer.com/kalkulatory/muzyka.html): Tempo, BPM, intervals
- [Regulacje AI](https://calcboxer.com/kalkulatory/regulacje-ai.html): AI Act / compliance-oriented calculators
- [Agentic Commerce](https://calcboxer.com/kalkulatory/agentic-commerce.html): Agent economics and platform costs
- [Biometria i prewencja](https://calcboxer.com/kalkulatory/biometria-prewencja.html): Biometrics and prevention metrics
- [Lifestyle](https://calcboxer.com/kalkulatory/lifestyle.html): Habits, remote work, everyday decisions

## Calculator categories (EN)

- [Motoring](https://calcboxer.com/en/calculators/motoring.html): Fuel, TCO and car costs
- [Finance](https://calcboxer.com/en/calculators/finance.html): Loans, savings, tax, VAT
- [Health](https://calcboxer.com/en/calculators/health.html): BMI, calories and related tools
- [Mathematics](https://calcboxer.com/en/calculators/mathematics.html): Algebra, geometry, statistics
- [Unit converters](https://calcboxer.com/en/calculators/unit-converters.html): Length, mass, volume, temperature
- [Construction](https://calcboxer.com/en/calculators/construction-calculators.html): Materials and building estimators
- [IT calculators](https://calcboxer.com/en/calculators/it-calculators.html): Network, storage, developer tools
- [Physics](https://calcboxer.com/en/calculators/physics.html): Mechanics, electricity, optics
- [Salary and work](https://calcboxer.com/en/calculators/salary-and-work.html): Gross/net and work tools
- [Real estate](https://calcboxer.com/en/calculators/real-estate.html): Area, price per ft²/m², rent helpers
- [Business](https://calcboxer.com/en/calculators/business-calculators.html): Margin, markup, break-even
- [Ecology](https://calcboxer.com/en/calculators/ecology.html): Carbon and sustainability tools
- [Date and time](https://calcboxer.com/en/calculators/date-and-time.html): Age, date difference, due date
- [Cooking](https://calcboxer.com/en/calculators/cooking-calculators.html): Recipe scaling and kitchen units
- [Music](https://calcboxer.com/en/calculators/music-calculators.html): Tempo, BPM, intervals
- [AI regulation](https://calcboxer.com/en/calculators/ai-regulation.html): AI compliance-oriented calculators
- [Finance — Agentic Commerce](https://calcboxer.com/en/calculators/finance-agentic-commerce.html): Agent and platform economics
- [Health: biometrics & prevention](https://calcboxer.com/en/calculators/health-biometrics-and-prevention.html): Biometric and prevention tools
- [Lifestyle & the new normal](https://calcboxer.com/en/calculators/lifestyle-and-the-new-normal.html): Habits and everyday decisions

## Popular calculators

- [BMI](https://calcboxer.com/kalkulatory/zdrowie/bmi.html): Body mass index
- [VAT net/gross](https://calcboxer.com/kalkulatory/finanse/vat.html): Polish VAT net ↔ gross
- [Loan instalment](https://calcboxer.com/kalkulatory/finanse/rata-kredytu.html): Loan payment estimate
- [Mortgage instalment](https://calcboxer.com/kalkulatory/finanse/kredyt-hipoteczny.html): Mortgage payment estimate
- [Gross to net salary](https://calcboxer.com/kalkulatory/wynagrodzenie/brutto-netto.html): Salary gross ↔ net (simplified)
- [Income tax (PIT)](https://calcboxer.com/kalkulatory/finanse/podatek-dochodowy.html): Simplified income tax
- [Fuel trip cost](https://calcboxer.com/kalkulatory/motoryzacja/koszt-paliwa.html): Trip fuel cost
- [Fuel consumption](https://calcboxer.com/kalkulatory/motoryzacja/spalanie.html): Fuel consumption calculator
- [Car TCO](https://calcboxer.com/kalkulatory/motoryzacja/tco-samochodu.html): Total cost of ownership
- [Percentage of a number](https://calcboxer.com/kalkulatory/matematyka/procent-z-liczby.html): Percentage calculator
- [TDEE](https://calcboxer.com/kalkulatory/zdrowie/tdee.html): Total daily energy expenditure
- [BMR / PPM](https://calcboxer.com/kalkulatory/zdrowie/ppm-bmr.html): Basal metabolic rate
- [km ↔ miles](https://calcboxer.com/kalkulatory/jednostki/km-na-mile.html): Distance unit converter

## Optional

- [Partnership](https://calcboxer.com/wspolpraca.html): Partnership / cooperation
- [Contact (EN)](https://calcboxer.com/en/contact.html): English contact page
- [Privacy (EN)](https://calcboxer.com/en/privacy-policy.html): English privacy policy
- [Facebook](https://www.facebook.com/profile.php?id=61582923756223): Calcboxer on Facebook
- [X / Twitter](https://x.com/Calcboxer): Calcboxer on X
- [Instagram](https://www.instagram.com/calcboxer/): Calcboxer on Instagram