⚖️
Math
Proportion Calculator
Solve the unknown number in the proportion by cross-multiplying: a : b = c : x.
🧮
Mathematics – Calculators
Free math calculators: triangle calculator, circle calculator, volume calculators, multiplication tables, Roman numerals, and other geometry and algebra helper calculators.
40 calculators
39 calculators
➗
Math
Decimal to Fraction Calculator
Convert a decimal number to a simplified fraction or a fraction to a decimal number.
🔣
Math
System of Equations Solver
Solve the system of equations a₁x + b₁y = c₁ and a₂x + b₂y =…
⚖️
Math
Weighted Average Calculator
Calculate the weighted average, for example, the average of grades weighted by credits.
❗
Math
Factorial Calculator
Calculate the factorial of a number (n!) accurately, even for large numbers, as well as the number of digits and…
🧩
Math
Prime Factorization Calculator
Factor a number into its prime factors and see the divisors, the number of divisors, and whether the number is prime.
📊
Math
Standard Deviation Calculator
Calculate the standard deviation and variance of a data set (sample or population), mean, and median.
📐
Math
Percentage Point Calculator
Calculate the difference between two percentage values in percentage points and the relative change in percentages.
➡️
Math
Vector Calculator (2D)
Calculate the addition, subtraction, dot product, cross product, length, and angle of 2D vectors.
▦
Math
Matrix Calculator (2×2)
Calculate the addition, multiplication, determinant, and inverse of 2×2 matrices.
Other categories
📅
Time & Dates
Free time calculators: age calculator, date difference, time zone calculator, countdown, and other date calculators.
19 calculators🚗
Cars & Travel
Free car calculators: fuel consumption, electric car charging, travel budget, driving cost and other calculators.
16 calculators🏠
Home & Construction
Free home calculators: paint calculator, concrete calculator, roof calculator, heating cost calculator, solar panel calculator, and over 20 other home calculators.
40 calculators💰
Money & Finance
Free financial calculators: loan, savings, investment, compound interest, budget and business calculators.
40 calculators❤️
Health
Free health calculators: BMI calculator, calorie calculator, BMR, body fat percentage, running pace, pregnancy calculator, and other wellness calculators.
43 calculators🔢
General Calculators
Free general calculators: percentage calculator, unit converters, median calculator, binary calculator, random number generator, and other helper calculators.
27 calculators