LiczGrupa.pl has been serving Polish users with 300+ free calculators and generators since 2025. Today, we are opening the door to English-speaking users with our first batch of 6 fully translated tools.
This is not machine translation slapped onto a Polish interface. Every field label, tooltip, validation message, output description, and detailed guide has been written in natural English. The calculation engine underneath is identical - same formulas, same precision, same instant results.
What is available right now
We picked 6 tools that are universally useful - no country-specific tax rates or legal formulas. Pure math, pure utility.
3 Calculators (Mathematics)
Percentage Calculator - the workhorse. Calculate any percentage: discounts, markups, VAT conversions, "what percent is X of Y" - multiple operation types in one tool. Every result comes with the formula breakdown and a practical tip.Pythagorean Theorem Calculator - enter any two sides of a right triangle, get the third. Shows the formula used and verifies the result. Clean, fast, no distractions before you see the answer.
Fraction Calculator - add, subtract, multiply, divide fractions. Automatic simplification to lowest terms, step-by-step solution. Useful for homework, cooking conversions, or quick checks.
3 Generators (Random)
Random Number Generator - generate 1 to 15 random numbers in any range up to 1 million. Toggle unique numbers (no duplicates) and ascending sort. Shows min, max, average, and sum.
Password Generator - create strong passwords 8-16 characters long. Choose uppercase, lowercase, digits, special characters. Each password gets a strength rating and estimated crack time.Color Generator - random colors or harmonious palettes (complementary, analogous, triadic, split-complementary). Every color shown in HEX, RGB, and HSL. One click, instant palette for your design project.
What makes these different
There are thousands of calculator websites. Here is what LiczGrupa does differently:
No signup required. Open the page, use the tool, close the tab. No email harvesting.
Instant results. Calculations run in a sandboxed engine. Results appear immediately.
Detailed explanations. Every calculator shows the formula used, step-by-step breakdown, and context. You do not just get a number - you understand why.
Share your results. Click the share button, get a link. Your inputs and outputs are preserved - useful for sending calculations to colleagues.
Mobile-friendly. Responsive layouts that work on phones without zooming or horizontal scrolling.
Poland-specific tools stay in Polish
Not everything makes sense in English. Our Polish tax calculators (PIT, VAT, ZUS), salary calculators (brutto-netto with Polish social insurance), and legal tools (inheritance law, sick leave) use Polish tax rates and regulations. Those stay exclusively on the Polish version.
What we are translating: universal math, health metrics (BMI, BMR, macro calculators), finance (compound interest, ROI, NPV), cooking conversions, automotive calculations, and all our generators. More tools coming regularly.
Try the tools
Pick one and test it:
- Percentage Calculator - start with "What is 15% of 230?"
- Pythagorean Calculator - enter sides 5 and 12, find the hypotenuse
- Fraction Calculator - try 2/3 + 3/4
- Average Calculator - calculate arithmetic, weighted, geometric and harmonic mean
- Random Number Generator - generate 6 unique numbers 1-49
- Password Generator - create a 16-character password with all character types
- Color Generator - generate a triadic palette
All free. All instant. All in proper English. More tools coming every week.
Tools available on LiczGrupa EN
- Percentage Calculator - discounts, markups, VAT and all percentage operations
- Pythagorean Theorem Calculator - find the missing side of a right triangle
- Fraction Calculator - add, subtract, multiply and divide fractions
- Average Calculator - arithmetic, weighted, geometric and harmonic averages
- Random Number Generator - generate unique random numbers in any range
- Password Generator - strong passwords with strength analysis
- Color Generator - random colors and harmony palettes in HEX, RGB, HSL