Skip to main content
Which.Calc
Home
All CategoriesHealthFinanceReligion Β· SocialMarketingMathematicsExamsLifestyle
About

Which.Calc

Free online calculators for finance, health, math, and everyday needs. Quick, accurate, and free to use.

Popular Calculators

  • Mortgage Calculator
  • Paycheck Calculator (Take-Home Pay)
  • Online BMI Calculator (Adults)
  • Time Card / Timesheet Calculator
  • Compound Interest Calculator
  • Auto Loan Calculator

Categories

  • Health
  • Finance
  • Religion Β· Social
  • Marketing
  • Mathematics
  • Exams
  • Lifestyle
  • All Calculators

Legal

  • Privacy Policy
  • Terms of Service
  • Disclaimer
  • About

Contact Us

πŸ“§info@kalkulator.click

Β© 2026 WhichCalc. All rights reserved.Developed by MammiriWeb

All Calculators

Choose from our ever-growing collection of 149+ calculators to suit your needs.

πŸ”
Showing 33 calculators
πŸ“ŠStd Dev
MATH

Standard Deviation Calculator

Calculate mean, median, variance, standard deviation, quartiles, and IQR for any dataset, sample or population.

Open Calculator β†’
🌐Subnet
MATH

IPv4 Subnet Calculator

Calculate IPv4 subnet network, broadcast, usable hosts, wildcard mask, and divide a subnet into smaller blocks.

Open Calculator β†’
🎲RNG
MATH

Random Number Generator

Generate random integers, decimals, coin flips, dice rolls, or shuffle a list using cryptographic randomness.

Open Calculator β†’
⚑Electrical
MATHEMATICS

Electrical Calculator (Watt, Capacitor, 3-Phase)

Calculate Watt-Volt-Ampere, capacitor (reactance/time constant), kWh consumption, and 3-phase power for industrial use.

Open Calculator β†’
βž–Integers
MATHEMATICS

Integer Arithmetic Calculator (Negative Numbers)

Addition, subtraction, multiplication, division of positive & negative integers with sign rules and number line visualization.

Open Calculator β†’
πŸ”·2D Shapes
MATHEMATICS

2D Shape Area Calculator

Calculate area and perimeter of various 2D shapes: square, triangle, circle, trapezoid, rhombus, and regular polygons.

Open Calculator β†’
πŸ“Pythagoras
MATHEMATICS

Pythagorean Theorem & Triangle Calculator

Calculate triangle sides using the Pythagorean theorem, determine triangle type, compute area & perimeter, and visualize with SVG.

Open Calculator β†’
βˆ‘Series
MATHEMATICS

Sequences & Series Calculator

Calculate the nth term and sum of n terms for arithmetic and geometric sequences, infinite series, and detect sequence patterns.

Open Calculator β†’
logLogarithm
MATHEMATICS

Logarithm Calculator

Calculate logarithms of any base, anti-logarithms, logarithmic equations, and verify logarithmic properties.

Open Calculator β†’
πŸ“ˆGraphing
MATHEMATICS

Function Graphing Calculator

Plot mathematical functions (polynomial, trigonometric, exponential). Graph up to 3 functions simultaneously.

Open Calculator β†’
πŸ”¬Scientific
MATHEMATICS

Scientific Calculator

Full-featured scientific calculator: trigonometry, logarithms, powers, roots, factorials, and memory. Supports DEG/RAD modes.

Open Calculator β†’
limLimit
MATHEMATICS

Function Limit Calculator

Calculate function limits numerically. Includes a table of 12 basic limits, indeterminate forms, and L'Hopital's rule.

Open Calculator β†’
⚑Basic Physics
MATHEMATICS

Basic Physics Calculator

Calculate velocity, force, kinetic energy, potential energy, and Ohm's law. Five fundamental physics formulas.

Open Calculator β†’
βš—οΈMolar Chemistry
MATHEMATICS

Molar Mass & Mole Conversion Calculator

Calculate molar mass from chemical formulas and convert between grams, moles, and particle counts.

Open Calculator β†’
|x|Absolute Value
MATHEMATICS

Absolute Value Calculator

Calculate absolute values, solve equations |ax+b|=c and inequalities |ax+b|<c. Includes number line visualization.

Open Calculator β†’
πŸ”„Rounding
MATHEMATICS

Number Rounding Calculator

Round numbers to various precisions: whole numbers, decimal places, tens, thousands, significant figures, and banker's rounding.

Open Calculator β†’
βž—Division
MATHEMATICS

Long Division Calculator

Perform division with step-by-step long division, remainders, fractions, and divisibility rules.

Open Calculator β†’
xΒ²Quadratic Equation
MATHEMATICS

Quadratic Equation Calculator

Solve axΒ²+bx+c=0 using the quadratic formula. Includes parabola visualization, vertex calculation, and Vieta's formulas.

Open Calculator β†’
fβ€²Derivative
MATHEMATICS

Derivative Calculator

Compute derivatives of functions numerically and view a reference table of basic derivative formulas.

Open Calculator β†’
πŸ“ŠAverage
MATHEMATICS

Average & Statistics Calculator

Calculate mean, median, mode, standard deviation, variance, and quartiles from a dataset.

Open Calculator β†’
πŸ”„Unit Converter
MATHEMATICS

Unit Conversion Calculator

Convert units of length, weight, volume, area, and speed instantly.

Open Calculator β†’
🎲Combinations
MATHEMATICS

Combination & Permutation Calculator

Calculate combinations C(n,r), permutations P(n,r), and factorials n! with step-by-step solutions.

Open Calculator β†’
πŸ“Trigonometry
MATHEMATICS

Trigonometry Calculator

Calculate sin, cos, tan, and their inverses. Includes special angle value tables, identities, and the unit circle.

Open Calculator β†’
πŸ”’Matrix
MATHEMATICS

Online Matrix Calculator

Compute matrix addition, multiplication, determinant, inverse, and transpose for 2x2 to 4x4 matrices.

Open Calculator β†’
∫Integral
MATHEMATICS

Online Integral Calculator

Calculate definite integrals using Simpson's rule. Includes a table of 20 basic integrals and integration rules.

Open Calculator β†’
πŸ”¬Slovin's Formula
MATHEMATICS

Slovin's Formula Calculator (Research Sampling)

Determine the required sample size for research using Slovin's formula based on population size and margin of error.

Open Calculator β†’
🌑️Temperature
MATHEMATICS

Temperature Conversion Calculator

Convert temperatures between Celsius, Fahrenheit, Kelvin, and Reamur instantly.

Open Calculator β†’
xⁿExponents & Roots
MATHEMATICS

Exponent, Root & Logarithm Calculator

Calculate powers (exponents), square/cube roots, logarithms, and convert scientific notation. Complete with formulas and reference tables.

Open Calculator β†’
πŸ”ŒResistor
MATHEMATICS

Resistor Color Code Calculator

Decode resistor values from color bands (4 & 5 band) or find the color code from a resistance value. Includes a visual resistor diagram.

Open Calculator β†’
πŸ”£Fractions
MATHEMATICS

Online Fraction Calculator

Perform addition, subtraction, multiplication, and division of fractions. Results shown in simplified, mixed, and decimal forms.

Open Calculator β†’
πŸ•Time
MATHEMATICS

Time Calculator (Hours, Minutes, Seconds)

Add or subtract hours, minutes, and seconds. Calculate time differences and convert between time units.

Open Calculator β†’
%Percentage
MATHEMATICS

Online Percentage Calculator

Calculate percentages: X% of Y, percentage change, and add/subtract percentages. Complete with formulas and explanations.

Open Calculator β†’
πŸ”’Number Converter
MATHEMATICS

Number Base Converter

Convert numbers between decimal, binary, octal, and hexadecimal bases instantly.

Open Calculator β†’