LiczGrupa Goes Global - 6 Free Tools Now Available in English
LiczGrupa.pl launches English versions of 6 free tools: percentage, Pythagorean theorem, fractions, random numbers, passwords and colors.
6 Jun 2026 · Krystian Szyszka · 6 min read
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Guides, tutorials, and articles about online calculators, math, finance, and everyday tools.
Average Calculator - Arithmetic, Weighted, Geometric and Harmonic Mean
New tool: calculate four types of averages online. Arithmetic, weighted, geometric and harmonic mean with formulas and step-by-step solutions.
7 Jun 2026 · Krystian Szyszka · 5 min read
Standard Deviation, Proportions and Powers - 3 New Math Calculators
Three new math calculators: standard deviation and variance, proportion solver with cross multiplication, powers and roots with decimal exponents. Free online tools.
8 Jun 2026 · Patryk Matyjasik · 8 min read
Logarithms, GCD/LCM and Area - New Math Calculators
Calculate logarithms (log10, ln, log2), find GCD and LCM of any numbers, compute area of 7 shapes. Three free math calculators with step-by-step formulas.
9 Jun 2026 · Patryk Matyjasik · 7 min read
From Quadratic Roots to Garden Fences - Math That Actually Matters
Solve 2x² - 7x + 3 = 0 in one click. Find how much water fits in a cylinder. Calculate fencing for your garden. Three math tools, three real problems.
10 Jun 2026 · Patryk Matyjasik · 9 min read
Primes, Factorials and Binary - Numbers Behind the Curtain
Prime number checker, factorial calculator and number system converter. Three math tools that connect textbook concepts to real-world programming and cryptography.
11 Jun 2026 · Natalia Skrzek · 7 min read
How Far Is Point B? Three Tools for Maps, Coordinates and Magnitude
Scale calculator for maps and plans, coordinate distance and midpoint finder, and absolute value tool. Three new math calculators with practical examples.
12 Jun 2026 · Natalia Skrzek · 7 min read
Why 360 has 24 divisors and your taxi bill is a straight line
Prime factorization explains why 360 has 24 divisors. Linear and quadratic functions model taxi fares and projectiles. Three math calculators with real examples.
13 Jun 2026 · Krystian Szyszka · 8 min read
Gauss Solved This at Age 10 and Your Salary Is Not the Average
Sum arithmetic sequences with Gauss formula, model exponential growth with geometric ratios, and find the median that outliers cannot distort.
14 Jun 2026 · Natalia Skrzek · 9 min read
Your suitcase weighs 23 kg but the scale says pounds
Convert kg to pounds, cm to inches, miles to km, and sum any list of numbers. Three free calculators for everyday conversions and quick arithmetic.
15 Jun 2026 · Patryk Matyjasik · 7 min read
MMXXVI on a clock face and why your recipe says liters but your cup says ounces
Convert 2026 to MMXXVI, liters to gallons, degrees to radians. Three free converters for Roman numerals, volume units and angle measurements.
16 Jun 2026 · Krystian Szyszka · 8 min read
One in six, ten thousand PINs and five ways to round a number
Calculate event probability as fraction and percent, count PIN and password combinations with variations, and compare five rounding methods side by side. Free online tools.
17 Jun 2026 · Patryk Matyjasik · 9 min read
Poker Hands, Pixel Rotations and the Speed of Light in One Line
Three new math calculators: combinations and permutations for counting problems, matrix operations for linear algebra, and scientific notation converter with SI prefixes.
18 Jun 2026 · Patryk Matyjasik
Does 150 Belong to the Fibonacci Sequence?
Check if a number is Fibonacci, count combinations with repetition, and find missing triangle angles. Three calculators that complete the math toolbox on LiczGrupa English.
19 Jun 2026 · Krystian Szyszka · 6 min read
You Are 13,000 Days Old and Your Next Birthday Is a Wednesday
Three new date and time calculators: exact age in days with zodiac signs, date difference in years/months/weeks, and date arithmetic with days, weeks, months and years.
20 Jun 2026 · Natalia Skrzek
Your Night Shift Started at 22:00 - How Many Hours Did You Actually Work?
Three new time tools: day counter for event countdowns, time sum for adding work hours, and time difference for shifts that cross midnight.
21 Jun 2026 · Patryk Matyjasik
1900 Was Not a Leap Year and Your 525-Minute Shift Is Exactly 8.75 Hours
Convert minutes to decimal hours, check leap year rules for any year, and find ordinal day numbers. Three date and time calculators explained with real examples.
22 Jun 2026 · Krystian Szyszka
Your 8-Hour Night Shift Is Only 480 Minutes and Pregnancy Is Exactly 40 Weeks
Calculate shift duration in decimal hours, find the time difference across midnight, and count weeks between dates. Three date and time tools explained with real examples.
23 Jun 2026 · Patryk Matyjasik
Midnight Is Not 12 PM and 8:45 Is Not 8.45
Midnight is 12 AM, not 12 PM. And 45 minutes is 0.75 hours, not 0.45. Convert between 24-hour and AM/PM time, translate HH:MM to decimal hours for timesheets, and find the weekday for any date in history. Three converters, three common mistakes, one article.
24 Jun 2026 · Natalia Skrzek
Your Contract Says 30 Business Days but Which 30?
Count business days between dates, calculate work hours from clock-in to clock-out, and find the exact difference in months. Three date and time calculators explained.
25 Jun 2026 · Patryk Matyjasik
101 articles total