Online tools · NG
4devskit
Generate and validate Nigerian documents in seconds. Fast, free, and 100% in your browser — ideal for development and testing.
106 generators7 validators
About us
4devskit is a free online toolkit to generate and validate test data in the browser.
4devskit (4devs kit) gathers country-specific generators and validators plus text, math, date, and encoding utilities.
Generators
- NIN GeneratorGenerate 11-digit National Identification Numbers.
- BVN GeneratorGenerate Bank Verification Numbers for testing.
- Phone GeneratorGenerate Nigerian mobile numbers.
- Bank Account GeneratorGenerate 10-digit Nigerian bank account numbers.
- License Plate GeneratorGenerate Nigerian vehicle plate numbers.
- State / LGA GeneratorGenerate Nigerian state and LGA pairs.
- Person GeneratorGenerate Nigerian profiles with ethnicity and LGA.
- Credit Card GeneratorGenerate fictional cards that pass the Luhn check.
- Password GeneratorGenerate strong passwords with composition options.
- Random Number GeneratorDraw random numbers with range and quantity controls.
- Lorem Ipsum GeneratorGenerate placeholder text for layouts and mockups.
- Fancy Text GeneratorConvert text into Unicode fancy styles for bios, titles, and mock content.
- Symbols to CopyCopy arrows, currency signs, and special characters for UI and content work.
- Pemeriksa EjaanPeriksa ejaan dengan kamus bawaan browser.
- Urutkan AlfabetUrutkan baris teks secara alfabet.
- Penghitung KarakterHitung karakter, kata, dan baris.
- Penghitung Kemunculan KataHitung kemunculan sebuah kata.
- Teks ke HTMLEscape teks menjadi HTML.
- Potong TeksBatasi panjang teks.
- Bagi StringPisahkan teks dengan pemisah.
- Info KarakterUnicode, desimal, hex, dan UTF-8.
- Balik TeksBalik urutan karakter.
- Huruf Besar/KecilUbah kapitalisasi teks.
- Hapus AksenHapus aksen dan diakritik.
- Ganti Baris BaruHapus atau ganti baris baru.
- Browser SayaDeteksi nama dan versi browser.
- Sistem Operasi SayaDeteksi sistem operasi.
- Base64 Enkode/DekodeEnkode dan dekode Base64.
- Hitung CRC32Hitung checksum CRC32.
- Hash MD5Buat hash MD5 secara lokal.
- Hash SHA1Buat hash SHA-1 secara lokal.
- Generator QR CodeBuat QR code di browser.
- Penerjemah BinerUbah teks dan biner.
- Pemilih WarnaPilih warna HEX dan RGB.
- Tabel ASCIILihat tabel ASCII yang dapat dicetak.
- Konverter Angka RomawiUbah desimal dan Romawi.
- Faktorkan AngkaUraikan menjadi faktor prima.
- Kalkulator FPBHitung faktor persekutuan terbesar.
- Kalkulator KPKHitung kelipatan persekutuan terkecil.
- Kalkulator PersenHitung persentase.
- Aturan TigaSelesaikan proporsi sederhana.
- Sisa PembagianHitung hasil bagi dan sisa.
- Luas LingkaranHitung luas lingkaran.
- Luas PersegiHitung luas persegi.
- Luas Persegi PanjangHitung luas persegi panjang.
- Luas SegitigaHitung luas segitiga.
- Luas Segi LimaHitung luas segi lima beraturan.
- Luas Segi EnamHitung luas segi enam beraturan.
- Luas Poligon BeraturanHitung luas poligon beraturan.
- Luas Belah KetupatHitung luas belah ketupat.
- Luas TrapesiumHitung luas trapesium.
- Luas Jajar GenjangHitung luas jajar genjang.
- Luas ElipsHitung luas elips.
- Luas Cincin LingkaranHitung luas cincin.
- Luas Juring LingkaranHitung luas juring.
- Selisih HariHitung hari antara dua tanggal.
- Tambah HariTambahkan hari ke tanggal.
- Kurang HariKurangi hari dari tanggal.
Validators
- NIN ValidatorValidate 11-digit NIN format.
- BVN ValidatorValidate 11-digit BVN format.
- Phone ValidatorValidate Nigerian mobile number patterns.
- Bank Account ValidatorValidate 10-digit Nigerian account format.
- License Plate ValidatorValidate Nigerian plate format.
- Credit Card ValidatorValidate card numbers with the Luhn algorithm and detect the card brand.
- Password Strength CheckerRate password strength as weak, medium, or strong for signup and QA flows.
String functions
- Spell CheckerCheck spelling with the browser’s built-in dictionary.
- Sort AlphabeticallySort lines of text alphabetically.
- Character CounterCount characters, words, and lines.
- Word Occurrence CounterCount how often a word appears.
- Text to HTMLEscape text to HTML in the browser.
- Truncate TextLimit text length with an ellipsis.
- Split StringSplit text by a separator.
- Character InfoUnicode, decimal, hex, and UTF-8 for a character.
- Reverse TextReverse character order.
- Case ConverterConvert upper, lower, title, and sentence case.
- Number to WordsWrite integers in English words.
- Remove AccentsStrip accents and diacritics.
- Replace NewlinesRemove or replace line breaks.
Mathematics
- Roman Numeral ConverterConvert decimals and roman numerals.
- Factor NumberFactorize into primes.
- GCD CalculatorCompute the greatest common divisor.
- LCM CalculatorCompute the least common multiple.
- Percentage CalculatorCalculate percentages quickly.
- Rule of ThreeSolve simple proportions.
- Division RemainderCompute quotient and remainder.
Area calculation
- Circle AreaCalculate the area of a circle.
- Square AreaCalculate the area of a square.
- Rectangle AreaCalculate the area of a rectangle.
- Triangle AreaCalculate the area of a triangle.
- Pentagon AreaCalculate regular pentagon area.
- Hexagon AreaCalculate regular hexagon area.
- Regular Polygon AreaCalculate regular polygon area.
- Rhombus AreaCalculate rhombus area from diagonals.
- Trapezoid AreaCalculate trapezoid area.
- Parallelogram AreaCalculate parallelogram area.
- Ellipse AreaCalculate ellipse area.
- Annulus AreaCalculate circular ring area.
- Circular Sector AreaCalculate circular sector area.