Free tools
Calculators and resources used by developers and entrepreneurs worldwide. No signup, no limits.
Software development cost calculator
Estimate your app, web or software project cost in minutes. By type, complexity and timeline. Widely used.
Use tool →Project & startup name generator
Generate name ideas for apps, startups and products. By style. Free.
Use tool →Character & word counter
Count characters, words and reading time. For Twitter, LinkedIn, SEO and copy. Very popular.
Use tool →Secure password generator
Generate strong random passwords. Configurable length and characters. Very searched worldwide.
Use tool →Lorem Ipsum generator
Placeholder text for mockups and designs. Paragraphs or words. Used by designers worldwide.
Use tool →Percentage calculator
What is X% of Y, what % is A of B. Instant calculations. Widely used.
Use tool →Overtime calculator
Calculate overtime pay: hourly rate, regular and overtime hours, 1.5x or 2x multiplier.
Use tool →BMI calculator
Body mass index: underweight, normal, overweight, obese. Very searched worldwide.
Use tool →Tip calculator
How much to tip and total to pay. Split between people. Popular for travel.
Use tool →Case converter
UPPERCASE, lowercase, Title Case or aLtErNaTiNg. For titles and SEO.
Use tool →Random number generator
Random number between min and max. For giveaways, tests and games.
Use tool →UUID v4 generator
Unique identifiers for databases and APIs. One or multiple. Used by devs worldwide.
Use tool →Base64 encoder
Encode and decode text to Base64. For URLs, APIs and data.
Use tool →JSON formatter & validator
Pretty print, minify and validate JSON. Used by developers worldwide.
Use tool →Unix timestamp converter
Timestamp to date and date to Unix. Seconds or ms. Very searched by devs.
Use tool →Days between dates
How many days between two dates. Deadlines, vacations, projects. Widely used.
Use tool →Dice roller
Roll a dice online: 6-sided or 4, 8, 10, 12, 20. Games and raffles.
Use tool →Unit converter
cm to inches, kg to lbs and vice versa. Daily use worldwide.
Use tool →Age calculator
How old you are in years, months and days. Next birthday. Widely searched.
Use tool →Random color generator
Random hex color for design and dev. Copy the code.
Use tool →Countdown timer
Count down to a date and time. Events, deadlines, key dates.
Use tool →Discount calculator
Final price with discount and savings. Sales and deals. Widely used.
Use tool →Temperature converter
Celsius, Fahrenheit and Kelvin. Cooking, science and travel.
Use tool →Mortgage calculator
Estimated monthly payment: principal, rate and term. Indicative.
Use tool →QR code generator
Create QR from URL or text. Download PNG. No signup.
Use tool →VAT calculator
Add or remove VAT from price. 20%, 10%, 5%. Widely used.
Use tool →Palindrome checker
Does it read the same forwards and backwards? Check instantly.
Use tool →Reverse text
Flip text right to left. Copy result.
Use tool →Speed calculator
Speed, distance or time: enter two and get the third.
Use tool →Online stopwatch
Digital stopwatch: start, pause, reset. Workouts, study, cooking.
Use tool →Daily calorie calculator
How many calories you need per day (TDEE). Weight, height, age, activity.
Use tool →GPA calculator
Grade average with weights. For students. Free.
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