Free Online Tools
Calculators and resources for developers and entrepreneurs worldwide. No signup required.
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Software development cost calculator 2026
Free software development cost estimate with realistic EUR 3k-90k ranges for an app, web, SaaS or automation. Instant, no signup.
Use the tool →Startup & business name generator
Free startup and business name generator. Get unique tech, short, compound or abstract name ideas for your app or product in seconds. No signup.
Use the tool →Character & word counter
Count characters (with and without spaces), words and sentences in your text instantly. Free online tool, no signup.
Use the tool →Secure password generator
Generate secure random passwords. Configurable length and characters. Copy to clipboard. Free and safe. Free 2026 Free online, no signup. Instant results on...
Use the tool →Lorem Ipsum Generator
Generate Lorem Ipsum placeholder text. Paragraphs or words. For designers and developers. Free online. Free 2026 Free online, no signup. Instant results on...
Use the tool →Percentage Calculator
Calculate percentages: what is X% of Y, what percent is A of B, percent increase or decrease. Fast and free. Free 2026
Use the tool →Overtime pay calculator — 1.5× and double time
Calculate overtime pay at 1.5× or 2× your hourly rate. Free US overtime calculator for weekly pay.
Use the tool →BMI Calculator
Calculate your Body Mass Index (BMI) free online. Enter weight and height, get instant result. Ideal to check if you're at a healthy weight. Free 2026.
Use the tool →Tip Calculator
Enter the bill amount, tip percentage and number of people to split the total instantly. Free, no signup.
Use the tool →Case Converter
Convert text to UPPERCASE, lowercase, Title Case or Sentence case instantly. Free online tool, no signup.
Use the tool →Random Number Generator
Genera números aleatorios en un rango personalizado (enteros o decimales). Ideal para sorteos, rifas y pruebas. Gratis online al instante. Gratis 2026, sin regi
Use the tool →UUID v4 Generator
Generate unique UUID v4 for APIs and databases. Copy to clipboard. Free for developers. Free 2026
Use the tool →Base64 Encoder / Decoder
Encode and decode text or files in Base64. For APIs and embedded data. Free online. Free 2026
Use the tool →JSON Formatter & Validator
Format (pretty print), validate and minify JSON online. Detect syntax errors instantly. Free, no signup.
Use the tool →Unix Timestamp Converter
Converts Unix timestamp to readable date and vice versa. UTC and local time. Free for developers. Free 2026
Use the tool →Days between dates calculator
Enter a start date and end date to see how many days, weeks or months are between them. Free, instant, no signup.
Use the tool →Online dice roller — free d6 & d20
Free online dice roller: roll d6 (1-6) or d20 in one click. No signup. Games, raffles and D&D on mobile.
Use the tool →Convert 150 lbs to kg, cm to inches — free
150 lbs to cm? That's weight vs length — 150 lbs ≈ 68.04 kg. Free lbs to kg + cm to inches converter. Instant, no signup.
Use the tool →Age calculator
Calculate your exact age in years, months and days. From birth date to today. Free online. Free 2026
Use the tool →Random color generator
Generates random hex colors. Palettes and ideas for design. Free online. Free 2026
Use the tool →Countdown timer
Count down to any date. Free, no signup, works on mobile
Use the tool →Discount calculator
Enter the original price and discount percentage to get the final price and amount saved instantly. Free, no signup.
Use the tool →Temperature converter
Convert Celsius, Fahrenheit and Kelvin. Free and instant. Free 2026
Use the tool →Mortgage calculator — monthly payment
Free mortgage payment calculator: estimate monthly principal & interest from home price, down payment, rate and term.
Use the tool →QR code generator
Create free QR codes for URLs, text or WiFi. Download as PNG. No signup, no limits. Free 2026
Use the tool →VAT calculator
Add or remove VAT from an amount. Multiple rates. Fast and free online. Free 2026
Use the tool →Palindrome checker
Check if a word or phrase reads the same forwards and backwards. Free online palindrome checker, instant result, no signup.
Use the tool →Reverse text
Reverses the order of lines or characters. For testing and creativity. Free. Free 2026
Use the tool →Speed calculator
Calculate speed, distance and time. Free, instant results in browser
Use the tool →Online stopwatch
Stopwatch and timer in the browser. Countdown and return. Free without installing anything. Free 2026
Use the tool →Daily calorie calculator
Estimate how many calories you need per day (TDEE) based on age, weight, height and activity level. Free, instant.
Use the tool →GPA / Grade average calculator
Calculate the average grade of your subjects. Weighted by credits. For university. Free. Free 2026
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