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182 tools found.
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Blake2b Hash Generator
Compute the BLAKE2b hash of text or a file in your browser, with adjustable output length and optional keyed hashing (MAC).
FreeCalculators
Bitwise Calculator
Perform AND, OR, XOR, NAND, NOR, XNOR, NOT, and bit shift operations on binary, octal, decimal, or hexadecimal numbers.
FreeText
Bionic Reading Converter
Convert any text into bionic reading format by bolding the first portion of each word to help you read faster and focus better.
FreeGame
Bingo Card Generator
Generate unique, print-ready 5x5 bingo cards with classic 1-75 numbers, custom words, or emojis, in a choice of color themes.
FreeCalculators
Binary Calculator
Add, subtract, multiply, and divide binary numbers directly, with results shown in binary and decimal, plus a binary/decimal converter.
FreeCalculators
Big Number Calculator
Perform exact arithmetic on numbers far larger than a normal calculator can handle: addition, subtraction, multiplication, division, exponentiation, square root, factorial, modulo, GCD, and LCM.
FreeCalculators
Betting Odds Converter
Convert betting odds between American, Decimal, Fractional, and implied probability formats, with payout, profit, and bookmaker margin (vig) calculations.
FreeText
Bcrypt Hash Generator Checker
Generate and verify bcrypt password hashes entirely in your browser using WebAssembly, with an adjustable cost factor and salt.
FreeCalculators
Battery Life Calculator
Estimate how long a battery will last given its capacity, your device's power draw, and a real-world efficiency factor.
FreeCalculators
Basic Calculator
A simple, free online calculator for everyday arithmetic, with memory storage, scientific-notation entry, and keyboard support.
FreeText
Number Base Converter
Convert a number between binary, octal, decimal, hexadecimal, BCD, Gray Code, and any custom base from 2 to 36, all at once from a single input.
FreeText
Base64 Encode/Decode
Encode text to base64 or decode base64 back to text, live as you type, with full Unicode support and an optional URL-safe variant.
FreeCalculators
Pressure Converter
Convert pressure between Pa, kPa, MPa, bar, PSI, atm, torr, and inHg all at once, with a visual gauge and presets for tires, bikes, and scuba tanks.
FreeText
Bar Graph Maker
Turn simple label,value data into a customizable bar chart with 8 color themes, orientation, sorting, negative-value support, instant stats, and SVG/PNG export.
FreeText
Bandwidth Calculator
Convert between data units, estimate file transfer time, size website bandwidth from traffic, and convert between a monthly data allowance and a sustained connection speed.
FreeText
Backronym Generator
Turn any acronym or word into a backronym across 6 tones and 5 sentence patterns, with custom words per letter and Memorability/Pronounceability scoring.
FreeCalculators
Average Return Calculator
Calculate a true annualized investment return from irregular, dated cash flows using XIRR, or chain together multiple known returns over different holding periods into one annualized figure.
FreeCalculators
Average Rate Of Change Calculator
Calculate the average rate of change of any function f(x) (polynomials, trig, logs, roots, and more) over an interval [a, b], with a graph of the function and its secant line.
FreeCalculators
Auto Loan Calculator
Estimate a car loan's monthly payment, total interest, and total cost of ownership, accounting for down payment, trade-in (including negative equity), incentives, sales tax, and fees.
FreeCalculators
Auto Lease Calculator
Estimate a car lease's monthly payment with a full depreciation/finance/tax breakdown, solve for the max price that fits a target payment, and convert between money factor and APR.
FreeCalculators
At Bats Per Home Run Calculator
Calculate a baseball player's AB/HR power-hitting ratio, see its performance tier, compare against real MLB career leaders, and solve for the at-bats or home runs needed to hit a target ratio.
FreeHardware
Refresh Rate Test
Measure your display's real, live refresh rate right in your browser using requestAnimationFrame timing, and catch a monitor advertised at 144Hz or higher that is really only running at 60Hz.
FreeHardware
Greyscale Test
Check a display for banding, shadow crushing, and highlight clipping with a real continuous 0-255 grey gradient, an interactive value readout, and a dedicated near-white patch set.
FreeHardware
Burn-in Test
Reveal OLED, plasma, or other display burn-in with solid gray, black, and white fields, plus a Flicker Boost mode that alternates gray shades to make faint marks easier to spot.
FreeHardware
Dead Pixel Test
Cycle full-screen through 9 solid colors to spot dead, bright, or stuck pixels on any monitor, laptop, phone, or TV, with an auto-play mode for hands-free scanning.
FreeCalculators
Screen Size Calculator
See your screen's real resolution and pixel ratio live, and calculate PPI, pixel pitch, and physical size in inches or centimeters from any diagonal size and resolution.
FreeHardware
Flicker Test
A clean reference screen and step-by-step instructions for detecting PWM backlight flicker with your phone camera, plus a strobe reference.
FreeHardware
Gamma Calibration
Estimate your display's effective gamma with the classic stripe-vs-solid-patch test across five candidate gamma values, sRGB 2.2 marked.
FreeHardware
Blooming Test
Test your Mini LED or FALD display for blooming with a star field, center, corner, and edge dot patterns and adjustable dot size.
FreeHardware
Brightness Test
Test your screen with a 10-step brightness ladder and a 9-zone fullscreen uniformity check to spot clouding or uneven backlighting.
FreeHardware
Color Accuracy Test
Play an interactive color-matching game: reproduce a target color with RGB sliders and get a perceptual accuracy score.
FreeHardware
Color Banding Test
See exactly what 6-bit vs 8-bit color banding looks like with an honest, adjustable mathematical quantization simulation.
FreeHardware
Gradient Test
Check your screen for color banding with grayscale, RGB channel, radial, and hue wheel gradient patterns, in fullscreen.
FreeHardware
P3 Gamut Test
Compare sRGB against Display P3 across 12 hues around the color wheel to see exactly where wide-gamut displays show more vivid color.
FreeHardware
sRGB Color Test
Check your display against a 24-patch sRGB reference set: primaries, memory colors, and a neutral grey ramp, with a fullscreen patch view.
FreeHardware
RGB Channel Test
Test your screen for dead, stuck, or hot pixels with pure red/green/blue channel isolation plus any custom color via hex or picker.
FreeHardware
Backlight Bleed Test
Test your LCD screen for backlight bleed with a full-screen pure black pattern and a 3x3 scan grid, plus IPS glow guidance.
FreeHardware
Black Level Test
Test how well your screen distinguishes near-black shades with 12 labeled RGB patches and a fullscreen single-patch view.
FreeHardware
Screen Tearing Test
Test your screen for tearing with sweeping bars at an adjustable frame-locked speed, plus a VSync/FreeSync/G-Sync explainer.
FreeHardware
Touch Screen Test
Test a touchscreen with multi-touch visualization, a free-draw precision canvas, and a dead-zone grid coverage scan.
FreeHardware
HDR Test
Check what your browser and display report about HDR and wide color gamut support, with a real sRGB vs Display P3 visual comparison.
FreeHardware
Ghosting Test
Test your monitor for screen ghosting and motion blur with a moving block, scrolling text, or fine-line pattern at an adjustable speed.
FreeHardware
Scroll Test
Test your mouse scroll wheel or trackpad with live direction, delta values, speed, and automatic wheel chatter detection.
FreeText
Atbash Cipher Tool
Encode and decode text with the Atbash cipher in classic, digit, and Hebrew variants, with a live mirror-pair reference and character mapping table.
FreeCalculators
Astronomical Unit Converter
Convert astronomical distances between AU, light-years, parsecs, kilometers, and more, with light-travel time and a cosmic scale visualization.
FreeCalculators
Aspect Ratio Calculator
Compute missing dimensions from a ratio, simplify pixel dimensions to a ratio, or resize proportionally, with a live preview and common ratio presets.
FreeCalculators
ARM Mortgage Calculator
Model the worst-case payment scenario for an adjustable-rate mortgage, with payment shock, a year-by-year schedule, and a fixed-rate comparison.
FreeCalculators
Arithmetic Sequence Calculator
Calculate the nth term and sum of an arithmetic sequence, with a sequence preview, bar chart, and reverse lookup for a target value.