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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AI Image UpscalerCreate a 2× enhanced image locally, compare it with the source, and download a new PNG copy.HTML to ImagePaste static HTML and CSS, review an exact-size preview, and export it as PNG or JPEG.Face & Area BlurFind likely faces, add or adjust your own private areas, and export a flattened blurred or pixelated PNG.Background RemoverCreate a transparent or solid-color subject cutout, then refine its edge with erase and restore brushes.scrypt Derive & VerifyDerive a versioned scrypt password record with a fresh salt, or verify a password against a record created by this page.All Hashes at OnceCompare current SHA-2 and SHA-3 digests in one pass, then deliberately opt in if a legacy MD5, SHA-1, or RIPEMD-160 value is required.ROT47 ToolApply the reversible ROT47 transform to printable ASCII while preserving spaces, line breaks, and non-ASCII characters.SHA-3 & SHA-224 GeneratorCreate SHA3-224, SHA3-256, SHA3-384, SHA3-512, or SHA-224 digests from UTF-8 text with Hex or Base64 output.Ascii85 Encoder & DecoderEncode UTF-8 bytes as compact Ascii85 text or decode validated standard and Adobe-wrapped input.Spaces, Tabs & Newlines ConverterMake spaces, tabs, line endings, and literal backslashes visible with a reversible escape notation.Random Structured Data GeneratorGenerate bounded XML, YAML, or TSV test records from a small visible field schema.IP Address Base ConverterConvert one IPv4 address among canonical decimal, binary, octal, hexadecimal, and integer forms.Text List Set OperationsCompare two line-based lists to find shared, unique, combined, or paired values in their original order.Line Filter ToolKeep or remove lines that contain, start with, or end with a literal search phrase.Line Range ExtractorExtract a numbered line range, the first lines, or the last lines while preserving blank lines.Backslash Escape & Unescape ToolEscape quotes, slashes, tabs, and line breaks or decode only the supported visible backslash sequences.Bitwise Logic ToolApply AND, OR, XOR, NOT, NAND, NOR, or XNOR to fixed-width binary words and inspect unsigned and signed interpretations.Any Base ConverterConvert signed whole numbers between bases 2 and 36 without losing precision, with the source base and letter casing kept visible.Binary Arithmetic ToolAdd, subtract, or multiply signed binary integers exactly and check whether the result fits a selected two’s-complement width.Gray Code ConverterConvert a fixed-width binary value to reflected Gray code or recover binary while preserving every leading zero.Beer-Lambert LawSolve absorbance, molar absorptivity, optical path length, or concentration with A = εbc and explicit unit conversions.Hydraulic Retention TimeSolve reactor hydraulic retention time, liquid volume, or average flow with wastewater-facing labels and common unit conversions.Cubic Cell CalculatorRelate atomic radius and lattice constant for simple, body-centered, or face-centered cubic cells and estimate density from molar mass.Isoelectric PointEstimate the isoelectric point of any standard amino acid from an explicit educational pKa table and its neutral charge interval.
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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.
Daily Good FortunePress one button to combine a Chinese Taoist-inspired fortune stick, a six-line I Ching draw, and a Tarot card into one uplifting daily message.Sexagenary CycleBrowse and search all 60 combinations of the Ten Heavenly Stems and Twelve Earthly Branches, with pinyin, elements, polarity, zodiac animals, and example years.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 Birth ChartConvert a local civil birth date and time into the Four Pillars, with visible stem and branch elements, Na Yin labels, and an explicit time-method notice.BaZi Date FinderEnter four valid Gan-Zhi pillars and search for matching Gregorian civil times from a chosen year, using solar-term month boundaries.BaZi Five ElementsCalculate the Four Pillars and count the visible Wood, Fire, Earth, Metal, and Water associations across their stems and main branches.Taoist Calendar ConverterConvert a Gregorian date into Taoist-era notation and inspect its related lunar date, Gan-Zhi day, and recorded Taoist observances.Daily Auspicious HoursCompare the twelve traditional double-hours for a selected date, including their Gan-Zhi labels, spirit classifications, and activity lists.
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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.
Numerology Chart CalculatorCalculate the core numbers from a birth date and full birth name in one private chart, with every letter value and reduction step available to inspect.Life Path CalculatorReduce the month, day, and year of birth with both classical and modern master-number conventions shown side by side.Challenge NumbersCalculate the four traditional Challenge Numbers from the absolute differences between reduced birth-month, day, and year values.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.Soul Urge NumberCalculate the Soul Urge or Heart’s Desire Number from vowels in a full birth name, with the treatment of Y under your control.Personality NumberCalculate the Personality Number from the consonants in a full birth name and inspect which letters were included.
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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.Three-Card SpreadChoose a three-position structure and draw unique cards for past-present-direction, situation-tension-action, or mind-feeling-reality.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.
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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 ResizerResize one or many JPG, PNG, or WebP images by dimensions, percentage, fit, or fill-and-crop rules.Image CropperDraw a crop, enter exact coordinates, choose a common aspect ratio, rotate, preview, and export a new image.Face & Area BlurFind likely faces, add or adjust your own private areas, and export a flattened blurred or pixelated PNG.Background RemoverCreate a transparent or solid-color subject cutout, then refine its edge with erase and restore brushes.AI Image UpscalerCreate a 2× enhanced image locally, compare it with the source, and download a new PNG copy.HTML to ImagePaste static HTML and CSS, review an exact-size preview, and export it as PNG or JPEG.Online Photo EditorCrop, resize, adjust, draw, and arrange editable text, shape, and image layers in one private workspace.
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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.
Secure Password GeneratorCreate cryptographically random passwords with adjustable length and character sets, then copy the result without uploading it.TOTP Code GeneratorGenerate a six- or eight-digit time-based one-time password from a Base32 secret with a visible refresh countdown.Deterministic Password GeneratorDerive a repeatable site-specific password from a private master phrase, service label, counter, and output length.Password Strength CheckerEstimate password guess resistance, detect common patterns, and show practical improvement feedback without transmitting the password.RSA Encryption & SignaturesGenerate RSA keys, encrypt short messages with OAEP, sign with PSS, and verify signatures using modern SHA-256 defaults.SM2 Encryption & SignaturesGenerate SM2 key pairs, encrypt and decrypt text, sign messages, and verify signatures with explicit encoding choices.SM4 Encryption ToolEncrypt or decrypt text with a 128-bit SM4 key using ECB or CBC compatibility modes and Hex or Base64 output.AES Encryption ToolEncrypt text with AES-256-GCM and a password-derived key, or decrypt a versioned envelope containing its salt, IV, and ciphertext.
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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.
UUID GeneratorGenerate RFC 4122 version 4 UUIDs with cryptographically random browser bytes.Nano ID GeneratorCreate compact URL-safe Nano IDs with adjustable length and quantity.ULID GeneratorGenerate lexicographically sortable ULIDs that combine a timestamp with secure randomness.ULID ParserInspect the timestamp and randomness components encoded inside a valid ULID.Gzip Text Encoder & DecoderCompress UTF-8 text to Base64 gzip data or restore compressed input locally.Base32 Encoder & DecoderEncode UTF-8 text as RFC 4648 Base32 or decode padded and unpadded input.Base58 Encoder & DecoderConvert UTF-8 bytes with the Bitcoin Base58 alphabet while preserving leading zero bytes.Base64 Encoder & DecoderEncode Unicode text to Base64 or decode Base64 into validated UTF-8 text.
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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.
Word & Character CounterCount locale-aware words, grapheme clusters, sentences, paragraphs, lines, bytes, and estimated reading time.Character & Word Frequency AnalyzerRank repeated words or visible characters with counts and percentages.Duplicate Line RemoverRemove repeated lines while preserving either first or last occurrences.Blank Line RemoverRemove every blank line or collapse excess spacing without changing visible paragraphs.Text SorterSort lines alphabetically, naturally, by length, or in a shuffled local order.Emoji RemoverRemove complete emoji grapheme sequences without splitting ordinary multilingual text.Custom Word & Phrase FinderFind user-supplied words or phrases with visible positions and match totals.International Phone Number ExtractorExtract conservative phone-like candidates without claiming that a number is active or valid.
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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.
Any Base ConverterConvert signed whole numbers between bases 2 and 36 without losing precision, with the source base and letter casing kept visible.Binary Octal Decimal Hex ConverterEnter one signed whole number in binary, octal, decimal, or hexadecimal and see all four exact representations together.BCD ConverterConvert decimal digits to binary-coded decimal or decode BCD nibbles, with packed-byte and unpacked-digit layouts stated explicitly.Gray Code ConverterConvert a fixed-width binary value to reflected Gray code or recover binary while preserving every leading zero.Binary Arithmetic ToolAdd, subtract, or multiply signed binary integers exactly and check whether the result fits a selected two’s-complement width.Bitwise Logic ToolApply AND, OR, XOR, NOT, NAND, NOR, or XNOR to fixed-width binary words and inspect unsigned and signed interpretations.Binary Shift & Rotate ToolShift or rotate one fixed-width binary word with visible truncation, zero fill, or sign extension.Scientific Notation ConverterConvert ordinary decimal text to normalized scientific notation or expand scientific notation without floating-point rounding.
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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.
Blank PDF GeneratorCreate a clean local PDF with a selected paper size, orientation, and bounded number of blank pages.PDF to Images ConverterRender each selected PDF page locally as PNG or JPEG and package multiple pages in a ZIP download.PDF to Text ExtractorExtract readable text in page order from a local PDF and download the visible result as a TXT file.PDF Page OrganizerCreate a new PDF with selected page order, page deletion, rotation, or inserted blank pages.Images to PDF ConverterCreate one PDF from local JPEG, PNG, or WebP images while preserving the selected image order.PDF Page Extractor & SplitterExtract a selected page range as one PDF or split selected pages into separate local PDF files.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.
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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.
SudokuSolve a fresh, uniquely solvable 9×9 Sudoku with keyboard-friendly notes, conflict checks, a timer, hints, and three difficulty levels.Sliding PuzzleReorder numbered tiles around one empty space on 3×3, 4×4, or 5×5 boards with move and time tracking.Schulte GridFind shuffled numbers in ascending order while the timer records accuracy, pace, and the next expected target.Bead Pattern DesignerPaint a compact pixel-bead grid with an original palette, undo changes, clear the board, and download a PNG pattern.Tic-Tac-ToePlay an accessible game of noughts and crosses against a perfect computer opponent or a second local player.Connect the Dots GeneratorTurn a safe local SVG path into a numbered connect-the-dots puzzle, adjust its dots and labels, preview the sequence, and download a printable SVG.Truth or DareDraw original, age-appropriate truth questions and low-risk dares for friends, families, classrooms, or remote calls.Dry HumorDraw an original, light sarcastic line that jokes about everyday friction without targeting a person or protected group.
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Chemistry Calculators
Solve chemistry homework with calculators for equations, stoichiometry, solutions, equilibrium, reaction rates, yields, thermodynamics, and more.
Atom CalculatorFind the proton, neutron, and electron counts for an atom or ion from its atomic number, mass number, and signed charge.Atomic Mass CalculatorAdd protons and neutrons to find mass number, then convert that nucleon count from unified atomic mass units to kilograms.Average Atomic MassCalculate a weighted average atomic mass from isotope masses and percent abundances, with the abundance total checked before calculation.Bond Order CalculatorCalculate average Lewis bond order across equivalent positions or use bonding and antibonding electron counts for molecular orbitals.Chemical Name CalculatorName supported binary ionic compounds and common polyatomic-ion salts while showing the ions and oxidation-state check behind the answer.Effective Nuclear ChargeEstimate the nuclear charge felt by an occupied electron using the selected element, orbital, ground-state configuration, and Slater rules.Electron ConfigurationFind the full ground-state electron configuration, noble-gas shorthand, shell totals, and outer-shell electron count for any element.Electronegativity DifferenceCompare two Pauling electronegativity values, calculate their absolute difference, and see a clearly labelled classroom bond guide.