102 tools available
Count characters, words and lines in real time.
Convert full/half-width, hiragana/katakana, upper/lower case.
Compare two texts and highlight differences.
Count bytes per encoding (UTF-8, Shift_JIS...).
Generate Japanese or English placeholder text.
Sort lines and remove duplicates or empty lines.
Estimate reading time for Japanese and English text.
Remove extra spaces, blank lines and indentation.
Count word occurrences and rank them.
Generate HTML ruby tags for furigana.
Convert text to Japanese vertical writing.
Convert between Simplified and Traditional Chinese.
Romanize Korean Hangul (Revised Romanization).
Convert numbers to Sino-Korean and native Korean numerals.
Convert numbers to Chinese numerals and formal (capital) figures.
Convert Chinese text to pinyin with tone marks or numbers.
Format, minify and validate JSON data.
Live Markdown preview with GFM support.
Encode and decode Base64 text instantly.
Encode and decode special characters in URLs.
Generate MD5, SHA-1 and SHA-256 hashes from text.
Convert between HEX, RGB and HSL with preview.
Convert between Unix timestamps and dates.
Test regular expressions with live match highlighting.
Convert between CSV and JSON formats.
Generate UUID v4 values in bulk.
Escape and unescape HTML special characters.
Convert binary, octal, decimal and hex.
camelCase, snake_case, kebab-case and more.
Build CSS gradients visually and copy the code.
Explain cron expressions in plain language.
Decode JWT headers and payloads in the browser.
Convert between YAML and JSON formats.
Format SQL queries for readability.
Preview HTML code in a sandboxed frame.
Convert Unix permissions between symbolic and octal.
Pick colors and copy codes in any format.
Generate TypeScript types from JSON.
Generate SEO and OGP meta tags.
Reference for HTTP status codes with explanations.
Convert cURL commands to fetch/axios code.
Escape strings for JSON, HTML, URL and more.
Generate favicons in multiple sizes.
Generate harmonious color palettes from a base color.
Check WCAG AA/AAA contrast compliance.
Build Markdown tables with a visual editor.
Convert CSS units with a reference table.
Network, broadcast and host count from CIDR.
Generate placeholder images as PNG.
High-quality AI translation between Japanese and English.
Turn meeting notes into structured minutes with AI.
Rewrite text professionally with AI.
Generate professional business emails from bullet points.
Summarize long text instantly with AI.
Generate SEO-optimized title ideas with AI.
Fix grammar and awkward phrasing with AI.
Get naming ideas for products and services.
Draft blog articles with AI.
Generate catchy slogans and copy with AI.
Create Japanese invoices, quotes and receipts as PDF.
Count business days excluding Japanese holidays.
Build campaign URLs with UTM parameters.
Convert numbers to formal kanji numerals.
Calculate 10.21% withholding tax on fees.
Convert hourly wage to monthly/annual income.
Required stamp duty for Japanese receipts.
Calculate sales tax and totals by US state.
Calculate US tips and split the bill per person.
Convert an amount into the Korean won reading (원).
Calculate VAT and totals by EU member state.
Validate and format an IBAN (MOD-97 checksum).
Check the format of an EU VAT identification number.
Generate secure random passwords with custom rules.
Create QR codes from URLs or text, download as PNG.
Add thousands separators, currency and more.
Days between dates, add or subtract days.
Convert between Japanese eras and Western years.
Calculate aspect ratios and missing dimensions.
Percentages, ratios and change rates.
Length, weight, temperature and more.
Calculate age from a birth date.
Calculate 10% / 8% Japanese consumption tax.
Monthly payments and total interest.
Calculate BMI and healthy weight range.
Simple timer and stopwatch in the browser.
Focus timer with work/break cycles.
Browse and copy special characters and symbols.
Find and copy emoji by keyword.
Estimate the cost of a meeting in real time.
A/B series paper dimensions reference.
Compress and resize images in the browser.
Convert between PNG, JPEG and WebP.
Show your current global IP address.
Split bills fairly with rounding options.
Birth year to age chart with Japanese eras and zodiac.
Add, subtract and total HH:MM durations.
Price after % off and discount rate.
Draw winners, shuffle order, split into groups.
Compute GPA on the US 4.0 scale from grades and credits.
Korean full age, counting age and year age from a birth date.
Find the zodiac animal and sexagenary year from a year.
Convert US units (°F, miles, lb, gallons) to metric and back.
