NEXACURRENT TOOLS
Free tools for clear, everyday tasks
Use practical English tools without downloading software or creating an account. Every page puts the main task first, explains what the result means, and keeps simple inputs in your browser whenever possible.
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Number to English WordsSpell signed integers and decimal digits in clear English words.UTF-8 Byte ConverterInspect UTF-8 bytes as hexadecimal values or decode bytes into Unicode text.Roman Numeral ConverterConvert integers from 1 to 3,999 into canonical Roman numerals or validate reverse input.Hex & Text ConverterConvert UTF-8 text to hexadecimal bytes or decode validated hexadecimal input.
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Chinese Astrology & Divination
Plan a date, compare traditional Chinese calendar systems, explore BaZi and zodiac references, and draw reflective messages in plain English.
Gan-Zhi Date CalculatorConvert a Gregorian date into its traditional year, month, and day Gan-Zhi labels, while comparing Lunar New Year and Li Chun year boundaries.BaZi Five ElementsCalculate the Four Pillars and count the visible Wood, Fire, Earth, Metal, and Water associations across their stems and main branches.Daily Auspicious HoursCompare the twelve traditional double-hours for a selected date, including their Gan-Zhi labels, spirit classifications, and activity lists.Five Elements ColorsBuild a date-based outfit palette from the day stem element and its generating support element, with the cultural convention clearly shown.Six-Line I ChingCast six virtual coin-method lines, identify the primary King Wen hexagram, and show the relating hexagram when changing lines appear.Minor Liu Ren CalculatorCalculate one of the six traditional Minor Liu Ren states from the lunar month, lunar day, and double-hour, with the formula disclosed.Daily Hexagram ReferenceLook up a deterministic daily study hexagram for any Gregorian date, with its King Wen number, symbol, Chinese name, pinyin, and line pattern.Zodiac CompatibilityCompare two annual zodiac animals using same-sign, Six Harmony, trine, opposition, and neutral traditional relationship tables.
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Numerology & Western Astrology
Calculate numerology numbers and Western astrology placements for a birth date, name, time, and place, with the chosen convention shown beside the result.
Life Path CalculatorReduce the month, day, and year of birth with both classical and modern master-number conventions shown side by side.Pinnacle NumbersCalculate four Pinnacle Numbers and their approximate age periods from the reduced components of a birth date.Birthday Number CalculatorRead the calendar day of birth as a compound number from 1 to 31 and compare it with its reduced root number.Expression NumberConvert every letter in a full birth name through the Pythagorean 1–9 table to calculate the Expression or Destiny Number.Inclusion Table CalculatorCount how often each Pythagorean value from 1 through 9 appears in a full birth name and review the contributing letters.Personal Month CalculatorAdd a selected month to its Personal Year value to calculate a monthly number from 1 through 9.Rising Sign CalculatorCalculate the tropical Ascendant from an exact birth instant, latitude, and longitude using sidereal time and true obliquity.Midheaven CalculatorCalculate the tropical Midheaven sign and degree from an exact birth instant and longitude, alongside its opposing Imum Coeli.
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Tarot Cards & Reflective Readings
Study the 78-card tarot, draw practical spreads, compare combinations, and use daily prompts for private, low-stakes reflection.
Daily Tarot CardView one deterministic card for today or any selected date, then use visual observation, a morning intention, and an evening evidence check.One-Card TarotDraw one private browser-based card for an open-ended question and compare its imagery, upright or reversed prompt, and practical reflection.Yes or No ReflectionReplace a forced prediction with a card-based opening, pause, or mixed signal that asks what evidence and trade-offs still need attention.Love Tarot SpreadDraw three cards for your perspective, the relationship dynamic, and a constructive conversation without scoring compatibility or reading another mind.Career Tarot SpreadDraw three cards to organize current work energy, a constraint to examine, and one small next experiment without replacing professional advice.Tarot Birth CardAdd a birth month, day, and year to calculate one or two Major Arcana study cards while keeping every reduction step visible.78 Card MeaningsSearch every Major and Minor Arcana card by name, suit, or keyword and inspect public-domain art, upright context, reversal, and reflection prompt.Card Combination ExplorerSelect two different cards and compare their pace, scale, themes, tension, and reflection questions without relying on a fixed prediction table.
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Free Online Image Tools
Resize, edit, convert, annotate, inspect, and create image assets locally, with previews that show how quality, format, and metadata choices affect the file.
Image CompressorCompress JPG, JPEG, and PNG images with a live quality preview, original dimensions, and batch downloads.Image Grid SplitterSplit one image into a 3×3 grid or a custom row-and-column layout and download every tile.Meme GeneratorArrange multiple text and image layers over your own photo or a color canvas, then export an original PNG meme.Code to ImageTurn a code snippet into a polished PNG card with theme, language label, padding, and line numbers.GIF MakerCreate an animated GIF from multiple images with adjustable size, frame delay, fit, and looping.Batch EXIF RemoverRemove EXIF and other metadata from multiple images by creating clean re-encoded copies.RGB to CMYK ConverterConvert an RGB color into approximate CMYK percentages with the full formula shown.Online Drawing BoardDraw with adjustable brush color and size, clear the canvas, and export the board as PNG.
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Free Online Cryptography Tools
Choose the right tool for passwords, tokens, hashes, encryption, signatures, classical ciphers, or old-format compatibility, with security warnings where they matter.
SM4 Encryption ToolEncrypt or decrypt text with a 128-bit SM4 key using ECB or CBC compatibility modes and Hex or Base64 output.ROT Cipher ToolTransform letters, digits, or both with ROT13, ROT5, and ROT18 while preserving punctuation and letter case.Hill Cipher ToolEncrypt or decrypt A–Z text with an invertible 2×2 matrix and inspect validation for keys that have no modular inverse.HMAC Generator & VerifierCreate or verify an HMAC-SHA-256, HMAC-SHA-384, or HMAC-SHA-512 value from a message and shared secret.JWT Decoder & VerifierDecode JWT headers and claims, inspect timestamps, and optionally verify an HMAC signature with a supplied secret.RC4 Cipher ToolRead or produce RC4-compatible ciphertext for legacy migration work, with Base64 output and prominent deprecation guidance.Email Address ObfuscatorConvert an email address into copyable numeric HTML entities without adding JavaScript or uploading the address.scrypt Derive & VerifyDerive a versioned scrypt password record with a fresh salt, or verify a password against a record created by this page.
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Developer Tools
Handle everyday developer tasks for identifiers, encodings, requests, code, structured data, spreadsheets, local files, test data, regex, SQLite, and Python in a private browser workspace.
ULID GeneratorGenerate lexicographically sortable ULIDs that combine a timestamp with secure randomness.cURL to Python ConverterTranslate a cURL command into Python Requests code with headers, body, and method.URL DecoderDecode percent-encoded URL components with clear malformed-sequence errors.HTML & PHP Echo ConverterWrap HTML as escaped PHP echo statements or restore compatible lines.MIME Type ReferenceSearch common MIME types by media type, extension, or description.XML & YAML ConverterConvert well-formed XML and YAML while retaining visible element, text, and attribute fields.vCard Contact GeneratorCreate a standards-oriented VCF contact file from names, phones, and email addresses.Python Browser RunnerRun bounded Python snippets through Pyodide WebAssembly without a server-side interpreter.
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Text & Writing Tools
Count, clean, transform, format, preview, generate, and export everyday text, Markdown, local files, Unicode styles, names, and small writing assets.
International Phone Number ExtractorExtract conservative phone-like candidates without claiming that a number is active or valid.Word Wrap ToolWrap paragraphs to a selected visible width without splitting ordinary words unless one word exceeds the limit.Line Filter ToolKeep or remove lines that contain, start with, or end with a literal search phrase.Markdown to HTMLParse CommonMark input into escaped source and reviewable HTML output.Local Temporary NotepadWrite a temporary local note with an explicit device-persistence switch and export option.Text File SplitterSplit local text by a chosen number of lines and download a ZIP of parts.LaTeX Math to SVG & PNGRender bounded LaTeX math with KaTeX into a visible local preview and downloadable SVG or PNG.English Name to Chinese NameSuggest readable Chinese name candidates from an English name using phonetic, meaning, or balanced rules.
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Math & Measurement Tools
Solve everyday math, unit, geometry, date, display, home, vehicle, and material questions with visible formulas and inputs you can check.
Screen PPI CalculatorCalculate display pixel density from resolution and diagonal size.Mass & Weight ConverterConvert grams, kilograms, metric tonnes, ounces, pounds, and US short tons.Latitude/Longitude DMS ConverterConvert signed decimal coordinates to degrees, minutes, seconds, and cardinal directions.Sphere & Hemisphere CalculatorCalculate sphere and hemisphere volume, curved area, and total surface area from radius.Age CalculatorCalculate completed calendar years, months, and days between a birth date and a reference date.Pet Age CalculatorShow a common age-equivalence estimate for a dog or cat, with no veterinary or health interpretation.Paint Coverage CalculatorEstimate paint volume from surface area, openings, coats, labeled coverage, and waste allowance.Stainless Steel Weight CalculatorEstimate the mass of a rectangular plate, round tube, or square tube from dimensions and selected density.
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PDF Tools
Create, combine, organize, convert, inspect, and export ordinary PDF files in the browser while keeping the original and the output separate.
PDF to Text ExtractorExtract readable text in page order from a local PDF and download the visible result as a TXT file.PDF MergerCombine multiple local PDF files in the selected file order into one downloadable PDF.Alternating PDF MergerInterleave two local PDFs as page 1 from A, page 1 from B, then continue in order.PDF N-up Layout MakerArrange two or four source PDF pages on each new output page for a compact reading or print layout.PDF Watermark ToolAdd a visible text watermark to selected local PDF pages with a chosen color, size, and opacity.PDF Metadata Inspector & EditorInspect common PDF document metadata locally and save a new copy with selected title, author, subject, keywords, or producer fields.PDF Long Image ExporterRender consecutive PDF pages into one vertical PNG image with a small visible gap between pages.PDF Link ExtractorExtract visible HTTP(S) link annotations from each local PDF page and download a de-duplicated review list.
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Everyday Utility Tools
Make simple charts, compare paper sizes, and convert a dated time between cities with small inputs and results that are easy to review.
Bar Chart MakerTurn up to twelve labelled values into a clean horizontal bar chart, then download an editable SVG or a presentation-ready PNG.Pie Chart MakerCompare parts of one meaningful whole with a labelled pie chart and export a private, browser-generated SVG or PNG.Donut Chart MakerBuild a readable donut chart with a visible total, labelled percentages, restrained colors, and local SVG or PNG downloads.Copier Scale CalculatorCompare common ISO and North American paper sizes and calculate the percentage needed to fit one sheet onto another.Time Zone DifferenceConvert a dated local time between two IANA zones and see the real UTC offset difference, including daylight-saving changes.
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Games & Entertainment
Play puzzles, arcade games, board games, random pickers, and creative activities with clear rules, touch-friendly controls, and private session state.
Tic-Tac-ToePlay an accessible game of noughts and crosses against a perfect computer opponent or a second local player.Silly SoundboardPlay five short, original synthesized comic sounds with volume control and no downloaded or third-party audio samples.俄罗斯方块Arrange seven original tetromino shapes on a 10×20 board with keyboard and touch controls, ghost landing guidance, next preview, scoring, levels, pause, mute, and restart.3D DiceRoll one to twelve common polyhedral dice on a responsive 3D table with an optional modifier, visible results, totals, and recent history.GomokuPlace black and white stones on a 15×15 board with a second local player, connect five, and undo or reset the current round.Mindful TapperUse a neutral wooden-block inspired tapper for quiet counting at your own pace, with optional synthesized sound and reset.Space ShooterPilot an original canvas starfighter through escalating waves, enemy fire, lives, temporary systems, pause, touch controls, and local best score.Trap the CatBlock hexagonal cells before the cat reaches an edge, with three starting layouts, accessible cell buttons, and difficulty options.
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Chemistry Calculators
Solve chemistry homework with calculators for equations, stoichiometry, solutions, equilibrium, reaction rates, yields, thermodynamics, and more.
Mass to Molar ConcentrationConvert mass concentration to molar concentration using a compound molar mass, with source and result units kept visible.Water HardnessConvert measured calcium and magnesium concentrations into hardness as CaCO3 and show each mineral contribution separately.Reaction QuotientCalculate Qc or Qp from current activities and stoichiometric coefficients, then optionally compare Q with K for direction.Gibbs Free EnergySolve ΔG = ΔH − TΔS for Gibbs energy, enthalpy, entropy, or temperature and interpret spontaneity only for the supplied conditions.Cell EMF CalculatorCalculate cell electromotive force from cathode and anode reduction potentials and relate it to molar Gibbs energy.Crude ProteinConvert a blank-corrected Kjeldahl titration into nitrogen percentage and crude protein with an explicit material-specific factor.Enzyme ActivityInterconvert enzyme product rate, total activity, activity concentration, and specific activity in µmol/min, U, U/mL, and U/mg.Detention Time CalculatorSolve effective detention time, vessel volume, or average flow with an explicit usable-volume fraction and common engineering units.