🧮 Calculators Collection
Various calculators for daily life and work
Basic Calculators
Math Calculators
Fraction Calculator
Fraction arithmetic and simplification
Calculate
Percentage Calculator
Percentage, increase, decrease
Calculate
Percent Error Calculator
Error between measured and actual values
Calculate
Exponent Calculator
Calculate x to the power of y
Calculate
Log Calculator
ln, log10, any base logarithm
Calculate
Ratio Calculator
Ratio calculation and simplification
Calculate
Root Calculator
Calculate nth root
Calculate
LCM Calculator
LCM and GCD calculation
Calculate
GCF Calculator
GCF and Euclidean algorithm
Calculate
Factor Calculator
All factors and prime factorization
Calculate
Rounding Calculator
Round, ceil, floor, truncate
Calculate
Matrix Calculator
Matrix operations, determinant, inverse
Calculate
Scientific Notation
Scientific notation conversion
Calculate
Big Number Calculator
Very large number operations
Calculate
Quadratic Formula
Solve using quadratic formula
Calculate
Half Life Calculator
Radioactive decay calculation
Calculate
Fibonacci Calculator
Fibonacci sequence
Calculate
Gaussian Elimination
Linear equation solver
Calculate
Modulo Calculator
Modular arithmetic and cryptography operations
Calculate
Polynomial Factorization
Factor polynomials
Calculate
Prime Checker
Prime number check & list
Calculate
GPA Calculator
Grade point average
Calculate
Fraction-Decimal Converter
Fraction ↔ decimal
Calculate
Statistics Calculators
Standard Deviation
Standard deviation, variance, mean
Calculate
Number Sequence
Pattern recognition and prediction
Calculate
Sample Size Calculator
Survey sample size
Calculate
Probability Calculator
Probability and conditional probability
Calculate
Statistics Calculator
Comprehensive statistical analysis
Calculate
Mean/Median/Mode
Central tendency measures
Calculate
Permutation & Combination
nPr, nCr calculation
Calculate
Z-Score Calculator
Z-score and normal distribution
Calculate
Confidence Interval
Confidence interval and standard error
Calculate
P-value Calculator
Statistical significance
Calculate
Rank Calculator
Percentile & rank
Calculate
Geometry Calculators
Triangle Calculator
Area, perimeter, angle calculation
Calculate
Volume Calculator
3D shape volume
Calculate
Slope Calculator
Line slope and equation
Calculate
Area Calculator
2D shape area
Calculate
Distance Calculator
Distance between 2D/3D points
Calculate
Circle Calculator
Circle area, circumference, radius
Calculate
Surface Area Calculator
3D shape surface area
Calculate
Pythagorean Theorem
Right triangle side calculation
Calculate
Right Triangle Calculator
Comprehensive trigonometry
Calculate
Regular Polygon Calculator
Polygon area, perimeter, angles
Calculate
Sector Calculator
Sector area, arc length
Calculate
Pyramid Calculator
Pyramid volume, surface area
Calculate
Rectangular Prism Calculator
Prism volume, surface area
Calculate
Rhombus Calculator
Rhombus area, perimeter, angles
Calculate
Geometry Calculator
Comprehensive geometry
Calculate
Perimeter Calculator
Shape perimeter
Calculate
Scale Calculator
Map scale calculation
Calculate
Finance Calculators
Overspending Index
Income to expense ratio analysis
Calculate
Discount Calculator
Discounted price and savings
Calculate
Sales Commission
Commission and net amount
Calculate
Loss Recovery Calculator
Required gain to recover loss
Calculate
CAGR Calculator
Compound annual growth rate
Calculate
ROI Calculator
Return on investment
Calculate
ROAS Calculator
Return on ad spend
Calculate
Depreciation Calculator
Asset depreciation calculation
Calculate
EBITDA Calculator
Operating cash flow measure
Calculate
Number Systems
Unit Conversion
Inch Converter
cm ↔ inch conversion
Calculate
Pound Converter
lb ↔ kg conversion
Calculate
Mile Converter
mile ↔ km conversion
Calculate
Ounce Converter
oz ↔ ml conversion
Calculate
Hectare Converter
ha ↔ pyeong ↔ m² conversion
Calculate
Temperature Converter
°C, °F, K conversion
Calculate
Speed-Distance-Time Calculator
Speed, distance, time calc
Calculate
DMS Converter
DMS ↔ decimal conversion
Calculate
Radian Converter
Radian ↔ degree conversion
Calculate
Acre Converter
acre ↔ m² ↔ pyeong
Calculate
Gallon Converter
gallon ↔ liter conversion
Calculate
Yard Converter
yard ↔ meter conversion
Calculate
Horsepower Converter
HP ↔ kW conversion
Calculate
Vitamin Unit Converter
IU ↔ PPM conversion
Calculate
Science/Engineering
Density Calculator
Density, mass, volume
Calculate
Mass Calculator
Mass unit conversion
Calculate
PPM Concentration
PPM, PPB concentration
Calculate
Dilution Calculator
Solution dilution
Calculate
Golden Ratio Calculator
Golden ratio calc
Calculate
Capacity Calculator
Volume capacity
Calculate
Resistor Color Code
4-band resistor
Calculate
Resistor Color Code (5-band)
5-band resistor
Calculate
Architecture/Real Estate
Building Coverage Ratio
Coverage ratio calc
Calculate
Floor Area Ratio
FAR calculation
Calculate
Exclusive Area Calculator
Exclusive/common area
Calculate
Room Pyeong Calculator
Room size in pyeong
Calculate
Price per Pyeong
Price per pyeong calc
Calculate
Tile Installation
Tile quantity needed
Calculate
Ready-Mix Concrete
Concrete volume
Calculate
Duct Airflow
Air flow calculation
Calculate