YOUR EVERYDAY TOOLKIT
A little help.
A lot more done.
Useful tools for the small tasks that fill your day. Free to use, easy to find, and built to keep your data on your device.
Image Converter
A new format. The same picture. Convert in seconds.
Open toolMerge PDF
Bring multiple PDFs together in one simple step.
Open toolPercentage Calculator
Discounts, differences, and percentages made easy.
Open toolQR Code Generator
Turn a link or a little text into a scannable QR code.
Open toolUnit Converter
Length, weight, temperature. Make the switch.
Open toolWord Counter
Words, characters, and reading time. All at a glance.
Open toolADC Resolution Calculator
Explore an ideal unipolar ADC’s resolution and output code.
Open toolAdd or Subtract Dates
Move a date forward or back by days, weeks, or months.
Open toolAspect Ratio Calculator
Simplify a ratio and resize dimensions proportionally.
Open toolAverage & Statistics Calculator
Find mean, median, sum, range, and population deviation.
Open toolBase64 Encoder & Decoder
Encode or decode Unicode text using Base64.
Open toolCapacitive Reactance Calculator
Calculate the magnitude of a capacitor’s AC reactance.
Open toolCase Converter
Switch between UPPERCASE, lowercase, and title case.
Open toolCompound Interest
Explore how savings could grow over time.
Open toolCrop Image
Keep just the part of the picture you need.
Open toolCSV to JSON
Turn a CSV table into a readable array of JSON objects.
Open toolDate Difference Calculator
Count calendar days and weeks between two dates.
Open toolDiscount Calculator
See the saving and final price after a discount and tax.
Open toolExtract PDF Pages
Save selected pages as a new PDF document.
Open toolFile Transfer Time Calculator
Estimate a transfer time from file size and link speed.
Open toolFind & Replace Text
Replace a word or phrase throughout your text.
Open toolFlip & Mirror Image
Mirror horizontally, vertically, or in both directions.
Open toolFraction Calculator
Add, subtract, multiply, or divide exact fractions.
Open toolFrequency & Period Converter
Convert frequency to period, or period to frequency.
Open toolGCD & LCM Calculator
Find a greatest common divisor and least common multiple.
Open toolGrayscale Image
Create a grayscale picture with adjustable strength.
Open toolHEX, RGB & HSL Converter
Move between common web color formats with a swatch.
Open toolHTML Entity Encoder & Decoder
Escape HTML characters or decode HTML entities.
Open toolImage Color Picker
Read the color of a pixel from your own image.
Open toolImage Compressor
Reduce dimensions and tune JPEG or WebP quality.
Open toolImage Resizer
The right dimensions for wherever your image goes.
Open toolImage Size & File Info
Check dimensions, aspect ratio, format, and file size.
Open toolImages to PDF
Bring your PNG and JPEG images into one PDF.
Open toolInductive Reactance Calculator
Calculate the magnitude of an inductor’s AC reactance.
Open toolJSON Formatter & Validator
Validate, indent, or minify a JSON document.
Open toolJSON to CSV
Convert an array of objects into a spreadsheet-friendly table.
Open toolLED Series Resistor Calculator
Estimate an LED current-limiting resistor and dissipation.
Open toolList Randomizer
Shuffle names, ideas, or tasks into a random order.
Open toolLoan Payment Calculator
Estimate a fixed-rate monthly loan payment.
Open toolNumber Base Converter
Convert binary, decimal, hexadecimal, and bases 2–36.
Open toolOhm’s Law Calculator
Find the missing link between voltage, current, and resistance.
Open toolPassword Generator
Create random passwords privately on your device.
Open toolPDF Page & Document Info
Inspect page counts, dimensions, and document metadata.
Open toolPercentage Difference Calculator
Compare two non-negative values symmetrically.
Open toolProfit Margin & Markup
Compare profit margin and markup on the same sale.
Open toolQuadratic Equation Solver
Solve real or complex roots of ax² + bx + c = 0.
Open toolRandom Number Generator
Pick random whole numbers within an inclusive range.
Open toolRC Time Constant Calculator
Find τ, settling times, and the RC cutoff frequency.
Open toolRemove Duplicate Lines
Clean a list while keeping the first copy of each line.
Open toolRemove PDF Pages
Remove unwanted pages and keep the rest together.
Open toolReorder PDF Pages
Put your document’s pages in the order you need.
Open toolResistor Color Code Calculator
Read the resistance and tolerance of a four-band resistor.
Open toolRotate Image
Turn an image clockwise without stretching it.
Open toolRotate PDF Pages
Turn selected PDF pages by 90, 180, or 270 degrees.
Open toolSales Tax Calculator
Add an entered tax rate or extract it from an inclusive price.
Open toolSavings Goal Calculator
Find a monthly contribution for a hypothetical savings goal.
Open toolScientific Calculator
Evaluate arithmetic, powers, functions, and factorials.
Open toolSeries & Parallel Resistors
Find the equivalent resistance of a resistor network.
Open toolSHA Hash Generator
Calculate SHA-256, SHA-384, or SHA-512 for text or a file.
Open toolSimple Interest Calculator
Calculate interest without compounding.
Open toolSort Lines
Put lists into alphabetical or natural numeric order.
Open toolText Difference Checker
See which lines were added, removed, or kept.
Open toolTip & Bill Splitter
Work out the tip and split the bill fairly.
Open toolUnix Timestamp Converter
Convert Unix seconds or milliseconds to and from UTC.
Open toolURL Encoder & Decoder
Encode special characters for a URL component.
Open toolURL Slug Generator
Turn a title into a tidy, readable URL slug.
Open toolUUID Generator
Generate random version 4 UUIDs in one click.
Open toolVoltage Divider Calculator
Find the unloaded output of a two-resistor divider.
Open toolWhitespace Cleaner
Tidy extra spaces, blank lines, and trailing whitespace.
Open toolWi-Fi QR Code Generator
Let guests join your Wi-Fi by scanning a code.
Open toolNo tools found just yet.
Try a different word, or explore the full collection.