Education & Learning
43 toolsAge Calculator — Years, Months & Days
Free age calculator. Calculate exact age in years, months, days, total hours. Zodiac sign, day of week born, days until next birthday — 100% client-side. 100% serverless.
Angle Converter — Free Degrees Radians Gradians Tool
Free, private, serverless angle converter. Convert between degrees, radians, gradians, arcminutes, arcseconds, turns — 100% client-side.
Area Converter — Free Square Meter Feet Acre Hectare Tool
Free, private, serverless area converter. Convert between square meters, feet, acres, hectares, square miles, and more — 100% client-side.
Braille Translator — Free Text to Braille Converter
Free, private Braille translator. Convert text to Braille (Grade 1) and back — Unicode output, download, bulk input. 100% client-side. 100% serverless.
Circle Calculator — Area, Circumference, Arc & Sector
Free circle calculator for area, circumference, diameter, arc length, and sector area — 100% client-side. 100% serverless.
Coordinate Converter — Free DMS Decimal GPS Tool
Free, private coordinate converter. Convert GPS coordinates between decimal degrees and DMS — bulk mode, Google Maps links, CSV export. 100% serverless.
Countdown Timer — Visual Timer with Presets
Free countdown timer with circular progress ring, 8 quick presets, audio alert, browser notifications — 100% client-side. 100% serverless.
Date Difference Calculator — Free Days Between Dates Tool
Free date difference calculator. Find days, weeks, months, years, hours, and business days between any two dates. Add/subtract days from a date. 100% serverless.
Density Converter — Free kg/m³ g/cm³ lb/ft³ Tool
Free, private, serverless density converter. Convert between kg/m³, g/cm³, g/mL, lb/ft³, lb/in³ — 100% client-side.
Dice Roller — D4 to D100 with History
Free dice roller with D4, D6, D8, D10, D12, D20, D100 support. Multiple dice, modifiers, animated rolls, roll history — 100% client-side, cryptographic randomness. 100% serverless.
Electric Current Converter — Free Ampere mA μA Tool
Free, private electric current converter. Convert between ampere, milliampere, microampere, kiloampere — 100% client-side. 100% serverless.
Energy Converter — Free Joules kWh Calories BTU Tool
Free, private, serverless energy converter. Convert between joules, kilowatt-hours, calories, BTU, electronvolts — 100% client-side.
Equation Solver — Free Linear, Quadratic & Cubic Solver
Free equation solver for linear, quadratic, and cubic equations. Find real and complex roots with discriminant analysis — 100% client-side. 100% serverless.
Factorial Calculator — Free n! Calculator with BigInt
Free factorial calculator supporting n! up to 1000!, double factorial n!!, subfactorial !n, and trailing zeros — 100% client-side. 100% serverless.
Fibonacci Sequence Generator — Free BigInt Calculator
Free Fibonacci sequence generator with BigInt precision up to 500 terms. See golden ratio convergence — 100% client-side. 100% serverless.
Force Converter — Free Newton lbf kgf Dyne Tool
Free, private, serverless force converter. Convert between Newton, pound-force, kilogram-force, dyne, kip — 100% client-side.
Fraction Calculator — Free Add, Subtract, Multiply, Divide
Free fraction calculator. Add, subtract, multiply, divide fractions with auto-simplification and mixed number display. 100% client-side. 100% serverless.
Frequency Converter — Free Hz kHz MHz GHz RPM Tool
Free, private, serverless frequency converter. Convert between Hz, kHz, MHz, GHz, THz, RPM, rad/s — 100% client-side.
Fuel Consumption Converter — Free MPG L/100km km/L Tool
Free, private, serverless fuel consumption converter. Convert between MPG, L/100km, km/L, and more — 100% client-side.
GCD & LCM Calculator — Greatest Common Divisor & Least Common Multiple
Free GCD and LCM calculator with Euclidean algorithm steps. Calculate for multiple numbers at once — 100% client-side. 100% serverless.
GPA Calculator — Free Grade Point Average Tool
Free GPA calculator. Add courses with credits and grades (A+ to F) to calculate your grade point average. 100% client-side. 100% serverless.
Length Converter — Free Distance Unit Converter Online
Free, private, serverless length converter. Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, and nautical miles — 100% client-side.
Logarithm Calculator — Free Log Calculator Any Base
Free logarithm calculator with custom base, natural log (ln), log₁₀, and log₂ — 100% client-side. 100% serverless.
Measurement Converter — 8 Categories, 50+ Units
Free measurement converter. Convert length, weight, temperature, volume, area, speed, time, data — 50+ units. Real-time results — 100% client-side. 100% serverless.
Morse Code Translator — Free Text to Morse Converter
Free, private, serverless Morse code translator. Convert text to Morse code and back with audio playback — 100% client-side.
Ohm's Law Calculator — Free V/I/R/P Electrical Tool
Free Ohm's Law calculator. Enter any 2 of Voltage, Current, Resistance, Power to calculate the other 2. 100% client-side. 100% serverless.
Permutation & Combination Calculator — Free nPr nCr Tool
Free permutation and combination calculator. Calculate P(n,r), C(n,r), with repetition, and factorial. Supports large numbers. 100% client-side. 100% serverless.
Power Converter — Free Watts HP kW BTU Tool
Free, private, serverless power converter. Convert between watts, kilowatts, horsepower, BTU/h, and more — 100% client-side.
Pressure Converter — Free PSI Bar ATM Pascal Tool
Free, private, serverless pressure converter. Convert between PSI, bar, atm, Pascal, mmHg, and more — 100% client-side.
Prime Number Checker — Free Primality & Factorization Tool
Free prime number checker with primality test, range finder, and prime factorization — 100% client-side. 100% serverless.
Probability Calculator — Free Odds & Chance Tool
Free probability calculator. Calculate single event probability, multiple events (AND/OR), coin flips, dice rolls. 100% client-side. 100% serverless.
Roman Numeral Converter — Free Roman Numbers Tool
Free, private, serverless Roman numeral converter. Convert numbers to Roman numerals and back with validation — 100% client-side.
Scientific Calculator — Trig, Log & More
Free scientific calculator. Trigonometry (sin/cos/tan), logarithms, square root, powers, π, e, DEG/RAD — 100% client-side with keyboard support. 100% serverless.
Speed Converter — Free Velocity Unit Converter Online
Free, private, serverless speed converter. Convert between km/h, mph, m/s, knots, Mach, and speed of light — 100% client-side.
Standard Deviation Calculator — Free Statistics Tool
Free standard deviation calculator with mean, median, mode, variance, and population/sample std dev — 100% client-side. 100% serverless.
Stopwatch — Precision Timer with Laps
Free, private stopwatch with centisecond precision. Track laps with best/worst/average stats, color-coded results, copy lap data — 100% client-side, no data sent. 100% serverless.
Temperature Converter — Free Celsius Fahrenheit Kelvin Tool
Free, private, serverless temperature converter. Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur with formula display — 100% client-side.
Time Converter — Free Seconds Minutes Hours Days Tool
Free, private time converter. Convert between nanoseconds, milliseconds, seconds, minutes, hours, days, weeks, years — 100% client-side. 100% serverless.
Torque Converter — Free N·m ft·lbf kgf·m Tool
Free, private, serverless torque converter. Convert between N·m, ft·lbf, kgf·m, in·lbf, and more — 100% client-side.
Triangle Calculator — Sides, Angles, Area & Perimeter
Free triangle calculator to find sides, angles, area, and perimeter using SSS and SAS. Classifies triangle type — 100% client-side. 100% serverless.
Voltage Converter — Free Volts mV kV Tool
Free, private voltage converter. Convert between volts, millivolts, kilovolts, megavolts, statvolt — 100% client-side. 100% serverless.
Volume Converter — Free Liters Gallons Cups Converter Tool
Free, private, serverless volume converter. Convert between liters, gallons, cups, pints, fluid ounces, tablespoons, and cubic meters — 100% client-side.
Weight Converter — Free Mass Unit Converter Online
Free, private, serverless weight converter. Convert between milligrams, grams, kilograms, ounces, pounds, stones, and tons — 100% client-side.
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