Featured tools
Editorial selections chosen for usefulness and quality. Featured is not a traffic ranking.
Percentage Calculator
Calculate a percentage of a number, find what percent one value is of another, or measure percentage increase and decrease. Results update instantly with no signup required.
Open tool →Percentage Change Calculator
Calculate the percentage increase or decrease between a starting value and an ending value. See the signed percentage, numeric difference, direction, and substituted formula instantly.
Open tool →Compound Interest Calculator
Estimate a future balance and interest earned from a starting principal, annual rate, time period, and compounding schedule. The projection updates instantly in your browser.
Open tool →Percentage Increase Calculator
Increase any non-negative value by a percentage, or measure the percentage increase from a starting value to a higher ending value. Results include the increase amount and multiplier.
Open tool →Word Counter
Count words, characters, sentences, paragraphs, reading time, and speaking time as you type. Text analysis happens locally in your browser.
Open tool →Length Converter
Convert inches, feet, yards, miles, millimeters, centimeters, meters, and kilometers instantly. Feet to meters is selected by default, with one-click unit swapping.
Open tool →Paint Calculator
Estimate painted wall area, exact gallons needed, and whole gallons to buy from wall dimensions, coats, and paint coverage. Common two-coat coverage defaults are ready to use.
Open tool →Word Descrambler
Unscramble letters into American-English words with optional wildcards, exact-use matching, length groups, common-word ranking, tile scores, and copyable results.
Open tool →JSON Formatter
Format, minify, and validate JSON online without uploading it. Get readable indentation, compact output, and clear syntax feedback directly in your browser.
Open tool →Five-Letter Word Finder
Filter a named American-English five-letter word list by exact positions, required letters, exclusions, duplicate counts, and wrong-position clues.
Open tool →Feet to Meters Converter
Convert feet to meters instantly with the exact international factor. Enter any non-negative length in feet to see meters and the calculation used. No extra button is required.
Open tool →Random Name Picker
Pick a random name or item from a comma- or line-separated list. See the recognized entry count and draw again without re-entering your choices.
Open tool →Text Difference Checker
Compare two text versions locally with line and word highlights, side-by-side and unified views, exact change counts, ignore controls, copy, and download.
Open tool →Meters to Feet Converter
Convert meters to feet instantly from the exact international-foot definition. Enter any non-negative meter value to see feet and the division used.
Open tool →Dice Roller
Roll two six-sided dice instantly or choose common tabletop presets from d4 to d100. Custom mode supports up to 100 dice with as many as 1,000 sides each.
Open tool →Inches to Centimeters Converter
Convert inches to centimeters instantly with the exact 2.54 factor. Enter a non-negative decimal inch value to see centimeters and the multiplication used.
Open tool →Discount Calculator
Calculate the sale price and amount saved from any percentage discount. Optionally add sales tax after the discount to estimate the final checkout price.
Open tool →Minecraft Circle Generator
Generate a block-by-block Minecraft circle blueprint with outline, thick-border, or filled modes. See exact block counts, row counts, stack totals, placed-block progress, and download a PNG.
Open tool →Time Zone Meeting Planner
Compare one meeting instant across two to six IANA time zones. See exact local dates, UTC offsets, configured working-hour overlap, DST changes, and a shareable 24-hour timeline.
Open tool →Date Duration Calculator
Calculate the calendar years, months, and days between two dates plus exact total days, full weeks, weekdays, and weekend days. Include the end date when your count needs both endpoints.
Open tool →Minecraft Nether Coordinate Converter
Convert Minecraft coordinates between the Overworld and Nether with the 8:1 horizontal ratio. Keep Y unchanged, compare exact and rounded block targets, and copy a ready-to-use teleport command.
Open tool →Color Contrast Checker
Check an opaque foreground and background color against WCAG 2.2 text and UI contrast thresholds. Preview the pair, find lightness-only passing suggestions, and copy CSS or a share link.
Open tool →Minecraft Chunk Coordinate Calculator
Convert Minecraft block X/Z coordinates into chunk coordinates, local 0-15 positions, exact chunk bounds, and blocks to every horizontal border. Negative coordinates use the correct floor-division rule.
Open tool →Minecraft Sphere Generator and Dome Planner
Build a Minecraft sphere or upper dome from exact horizontal block layers. Compare hollow and solid plans, reuse mirrored patterns, track progress, and download a printable material plan.
Open tool →Minecraft Stack Calculator
Convert a Minecraft item total into full stacks, loose items, occupied slots, main-inventory trips, shulker boxes, and double chests. Reverse the calculation from stacks to items and copy the exact plan.
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