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The newest tools added to J-Kit and the improvements that make everyday work faster.

Tools in the catalog
389
New in 90 days
60
Tracked releases
60

63 of 63 entries

  1. Bubble LevelNewAccelerometer bubble level with surface, plumb and edge modes, calibration, and readings in degrees, % and mm/m.Utilities
  2. Angle MeterNewDigital protractor and inclinometer: degrees, percent, 1:N ratio, roof pitch and the angle between two faces.Utilities
  3. Height MeasurerNewMeasures the height of a tree, pole or building by triangulation, sighting through the camera, with or without a tape measure.Utilities
  4. GPS AltimeterNewAltitude above sea level combining GPS and a digital elevation model, with estimated pressure and boiling point.Utilities
  5. GPS SpeedometerNewGPS speed in km/h, mph, m/s and knots, with distance covered, top and average speed, and pace per kilometre.Utilities
  6. Seismograph and Vibration MeterNewLive accelerometer vibration trace, with peak in m/s² and g, RMS value and dominant frequency.Utilities
  7. Phone Sensor TestNewFinds out whether the device has a gyroscope, accelerometer and compass, with a live three-axis readout.Utilities
  8. Accessibility Ramp CalculatorNewMeasures or computes ramp slope and checks it against tables 4 and 5 of Brazil's NBR 9050, with segments and landings.Utilities
  9. Decibel MeterNewSound level meter with A, C and Z weighting, slow and fast response, Leq, and a check against Brazil's NR-15 limits.Health
  10. Mermaid Diagram EditorNewWrite Mermaid syntax and watch the diagram render live, with ready-made examples and SVG and PNG export.Productivity
  11. ABNT Reference GeneratorNewBuild bibliographic references under Brazil's NBR 6023 standard for books, articles, websites, theses and videos, ready to copy.Productivity
  12. Band Name GeneratorNewBand names by music genre (rock, pop, punk, indie, electronic, hip-hop) with multiple combination patterns.Creativity
  13. Typing Speed TestNewMeasure your words per minute (WPM) and accuracy by typing short passages, with history and progress saved in your browser.Casual & Play
  14. GPA CalculatorNewCompute your GPA on the US 4.0 scale or Brazil's weighted CR (Coeficiente de Rendimento) grade average.Mathematics
  15. Moon Phase CalendarNewSee the real Moon phase for any day of the month, with illumination percentage and the next New Moon and Full Moon computed in your browser.Astrology & Tarot
  16. Biorhythm CalculatorNewCalculate your physical, emotional and intellectual cycles from your birth date and see the chart for the 30 days around today.Astrology & Tarot
  17. Leaked Password CheckerNewFind out if a password has already shown up in known breaches, without it ever leaving your browser.Security
  18. DNS Propagation CheckerNewQuery Cloudflare, Google and DNS.SB in parallel and see whether a DNS record has propagated.Network
  19. CORS TesterNewTest whether an API accepts cross-origin calls and simulate the OPTIONS preflight.Network
  20. ASN/BGP LookupNewAn ASN's organization, announced prefixes and BGP neighbours, or the ASN behind an IP.Network
  21. IBAN ValidatorNewValidate an IBAN with the ISO 13616 mod-97 checksum and per-country length rules.Finance
  22. Fuel & Trip Cost CalculatorNewCalculate trip fuel cost, split it among passengers and compare ethanol with gasoline.Finance
  23. Pix QR Code GeneratorNewBuild the Pix copy-and-paste payload and QR code from your own Pix key.Finance
  24. Brazilian Boleto DecoderNewDecode a Brazilian boleto digitable line: bank, due date, amount and check digits.Finance
  25. BR License Plate GeneratorNewGenerate and validate Brazilian license plates in both Mercosul and legacy (7-character) formats, with format decoding and no real registry lookup.Test Documents & IDs
  26. VIN (Chassis Number) GeneratorNewGenerate and validate 17-character VIN (chassis) numbers with the official ISO 3779 check digit, including WMI, VDS and VIS decoding.Test Documents & IDs
  27. RENAVAM GeneratorNewGenerate and validate synthetic RENAVAM numbers with DENATRAN's modulo-11 check digit, tested against publicly known real numbers.Test Documents & IDs
  28. Brazilian NFe Access Key ValidatorNewDecode and validate the 44-digit Brazilian NFe/NFCe access key locally: state, date, CNPJ, model, series, number and check digit, without querying SEFAZ.Test Documents & IDs
  29. Brazilian CNS (Health Card) ValidatorNewValidate and generate a synthetic Brazilian CNS (national health card) number using both official DATASUS algorithms, definitivo and provisório, without querying CADSUS.Test Documents & IDs
  30. Chinese Gender PredictorNewTraditional Chinese baby gender prediction chart. Entertainment folklore, with no proven medical basis.Health
  31. Child Growth Chart (0-24 Months)NewWeight, length and head-circumference percentile and z-score for 0-24 months, using the official WHO growth curves.Health
  32. Dog & Cat Pregnancy CalculatorNewEstimated due date, expected range and a milestone timeline, from the mating date.Health
  33. Running Pace CalculatorNewPace, time or distance, km/mile splits and race-to-race equivalence using the Riegel formula.Health
  34. CSS Grid GeneratorNewBuild grid-template-columns/rows visually, position items and copy CSS or Tailwind.Design
  35. Flexbox GeneratorNewFlexbox playground with container and per-item controls, live preview and CSS or Tailwind.Design
  36. Glassmorphism GeneratorNewCreate glass surfaces (backdrop-filter) or neumorphism with live preview and copyable CSS.Design
  37. 9 new games: memory match, maze, checkers and moreThe games section got 9 new titles, with no daily puzzle, playable anytime: options for young children to have fun and learn, plus strategy and arcade games for adults. Everything runs offline, right in the browser.
    • For kids: Memory Match, Connect the Dots, Maze and Hangman.
    • Four in a Row and Checkers bring a real AI opponent, with three difficulty levels.
    • 2048, Snake and Color Sequence, for quick, endless rounds.
  38. NATO Phonetic AlphabetNewOfficial ICAO/NATO table with search, plus a speller that turns any text into Alfa, Bravo, Charlie...Utilities
  39. Brazilian Police Q-CodesNewMeaning of QAP, QSJ, QSV and every Q-code used by Brazil's military police, firefighters and security services.Utilities
  40. Ten-Codes (10-Codes)NewLook up police (APCO) and CB/trucker meanings for US ten-codes, side by side.Utilities
  41. Maritime Signal FlagsNewThe 26 letter flags and 10 numeral pennants of the International Code of Signals, with official meanings and a visual speller.Utilities
  42. Semaphore AlphabetNewLook up all 26 flag semaphore letters with angle diagrams, and spell any text into semaphore positions.Utilities
  43. Resistor Color CodeNewIEC 60062 chart and calculator for 4, 5 and 6-band resistors.Utilities
  44. Hazmat PlacardsNewThe 9 DOT/UN hazard classes with official color and real examples.Utilities
  45. Braille AlphabetNewGrade 1 (English) braille reference table with real Unicode, a dot diagram, and a text speller.Utilities
  46. CS2 Round RandomizerNewDraw the bombsite, CT rotation, retake and 5 team roles for Counter-Strike 2, unbiased, no live game state.Games
  47. Live Blackjack AdvisorNewBuild the round in real time — your cards, the dealer's and other players' — and get the recommended action after every card, with the remaining shoe computed for real.Casual & Play
  48. Poker Hand RankingsNewThe complete ranking of the 10 poker hands with real cards, the exact probability of each one, and an evaluator: build a 5-to-7-card hand and find out the result.Casual & Play
  49. Blackjack Basic StrategyNewThe blackjack basic strategy chart computed on the fly for your table's rules (decks, S17/H17, DAS, surrender), with a quick advisor for hit, stand, double, split or surrender.Casual & Play
  50. Nickname FinderNewReal nicknames derived from your actual name: diminutives, hypocoristics, compound names and international styles.Creativity
  51. Text & Code TranslatorNewConvert text to binary, hexadecimal, octal, morse, Base64, Base32, Base58, URL, HTML, ROT13, NATO and leetspeak, and back, all in your browser.Productivity
  52. Emoji Picker & Copy PasteNew1,900+ emoji catalog with PT/EN search, skin tones, favorites and one-click single or bulk copy.Utilities

  53. Dream InterpreterNewDescribe your dream and discover what each symbol may mean: psychological (Jungian) and spiritual interpretation of 250+ dream symbols.Astrology & Tarot
  54. Rising Sign CalculatorFind your rising sign from your birth date, time and city, with the exact degree and Midheaven.Astrology & Tarot
  55. Moon Sign CalculatorCompute the real Moon position at your birth and discover your moon sign and the Moon phase.Astrology & Tarot
  56. What Is My Zodiac Sign?Enter your birth date and discover your sun sign, element, modality and ruling planet.Astrology & Tarot
  57. Zodiac CompatibilityCompare two signs and see love, friendship and work compatibility by element and modality.Astrology & Tarot
  58. Chinese ZodiacFind your Chinese zodiac animal and element by birth year, accounting for the Chinese New Year cutoff.Astrology & Tarot
  59. Numerology CalculatorCalculate your Life Path, Expression and Soul Urge numbers from your name and birth date (Pythagorean).Astrology & Tarot
  60. Online TarotDraw the illustrated tarot cards online: card of the day, yes or no, love, past-present-future and the Celtic Cross, with upright and reversed meanings.Astrology & Tarot
  61. Daily HoroscopeRead your sign's daily horoscope for love, work and well-being, with a lucky number and color, just for fun.Astrology & Tarot

  62. More complete finance calculatorsFinance calculators got stronger math and ready-made scenarios for payroll taxes, CDB, Treasury bonds, SAC and PRICE financing.
    • Compound interest now supports month-level terms, monthly contributions and benchmark comparison.
    • More ready-made financial scenarios for the most common questions.
  63. Practical guides and sources on every toolEvery tool now ships with clear explanations, examples and the official sources behind each calculation, so you can trust the result and learn along the way.
    • New guides explain concepts and point you to the right tool for each task.
    • Tool pages now show the official references behind each calculation.
    • Jumping between related tools is now simpler.