Converters & Calculators

Use a familiar button calculator for arithmetic, parentheses, percentages, memory, keyboard input, and calculation history.

Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, angle modes, memory, and history.

Solve linear and quadratic equations or a two-variable linear system, including real and complex quadratic roots.

Add, subtract, multiply, or divide two fractions and receive a reduced fraction and decimal result.

Calculate matrix addition, subtraction, multiplication, determinant, inverse, transpose, and reduced row echelon form for matrices up to 4 by 4.

Solve ax² + bx + c = 0 and inspect the discriminant, roots, and parabola vertex.

Solve one missing value in A:B = C:D by leaving exactly one input blank.

Calculate the arithmetic mean, median, mode, sum, range, count, and min/max values for any set of numbers instantly.

Analyze a numeric dataset with descriptive statistics and optionally calculate a two-variable linear regression.

Quickly find final sale prices, saved amounts, and net discount percentages for shopping, retail sales, and seasonal promotions.

Calculate monthly loan payments, total interest paid, and full amortization schedules for mortgages, auto loans, and personal financing.

Quickly calculate tip percentages (10%, 15%, 18%, 20%), total bill amounts, and split checks evenly among dining guests.

Accurately calculate your exact chronological age in years, months, weeks, days, hours, plus your zodiac sign and birthday countdown.

Calculate exact duration between two calendar dates in total days, weeks, months, and years with accurate leap year handling.

Choose participant locations on the map and find meeting times inside everyone's selected work hours and weekdays.

Choose any map locations and compare the same 24-hour period, work hours, and calendar-day changes.

Convert times between UTC, GMT, EST, PST, CST, and worldwide time zones with automatic daylight saving time adjustments.

Convert 10-digit (seconds) and 13-digit (milliseconds) Unix Epoch timestamps into human-readable date formats and vice versa.

Display real-time synchronized clocks for major international cities including London, New York, Tokyo, Paris, Sydney, and Beijing.

Easily calculate and resize image, video, and display aspect ratios (16:9, 4:3, 21:9, 1:1) without visual distortion.

Quickly convert between metric and imperial units for length, weight, area, volume, temperature, speed, and digital data storage.

Calculate your Body Mass Index (BMI), ideal weight range, and health category based on metric or imperial height and weight.

Easily calculate percentage increases, decreases, difference between numbers, and fractional ratios with instant results.

Generate cryptographically random integers, unique lottery numbers, and floating-point values within any custom range.