All Tools

Calculate percentages instantly. Find percentage of a number, increase/decrease, and difference.

Convert between units of length, weight, temperature, area, volume, speed, and time.

Free online scientific calculator with trigonometry, logarithms, and advanced math functions.

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

Calculate and solve ratios and proportions. Find missing values in A:B = C:D equations.

Calculate monthly loan payments, total interest, and view amortization schedule. Works for mortgages, car loans, and personal loans.

Calculate compound interest with regular contributions. See your investment grow with yearly breakdown and visual chart.

Calculate VAT/tax amounts. Add or remove VAT with country presets. Supports bulk calculation for multiple amounts.

Solve linear (ax + b = c) and quadratic (ax² + bx + c = 0) equations with step-by-step solutions.

Perform matrix operations: add, subtract, multiply, determinant, transpose, and inverse for 2x2 and 3x3 matrices.

Calculate statistics from a data set: mean, median, mode, range, variance, standard deviation, min, and max.

Calculate voltage, current, resistance, and power using Ohm's Law. Fill any 2 fields to find the other 2.

Calculate projectile motion: max height, horizontal range, time of flight, and velocity components.

Convert between wavelength (nm/m), frequency (Hz/THz), and photon energy (eV/J). Visible spectrum color preview.

Calculate molar mass of any chemical compound. Enter a formula like H2O or C6H12O6 and get element breakdown.

Calculate pH from H⁺ concentration or pOH. Visual pH scale indicator with acidic/neutral/basic labels.

Interactive periodic table for the first 36 elements. Click any element to see atomic number, mass, electron configuration, and category.

Generate strong, random passwords with custom length, characters, and complexity options.

Check how strong your password is. Get a score and tips to improve password security.

Encrypt and decrypt text using AES-256. Secure your messages with password-based encryption.