Miscellaneous tools
158 free "Miscellaneous" tools, processed 100% locally in your browser thanks to WebAssembly — no file or text is sent to a server (unless stated otherwise on the tool in question).
Financial calculators
- Loan payment calculator
- Simple retirement savings calculator
- Mortgage calculator
- Price per kilo / per liter comparator
- Car lease calculator
- VAT calculator
- Compound interest calculator
- Break-even point calculator
- Inflation calculator (fixed rate)
- Calculate the real cost of a meeting
- Tax bracket calculator (France)
- Calculate the price of a freelance project
- Net/gross salary calculator (France)
- Savings goal calculator
- Margin and selling price calculator
- Freelance day rate calculator
- Late fee calculator
- Annual growth (CAGR) calculator
- Discounted price calculator
- Hourly rate ↔ annual salary converter
- Salary raise calculator
- Return on investment (ROI) calculator
- Split trip expenses between participants
Dates & countdowns
- Age calculator
- Add or subtract days from a date
- Percentage calculator
- Days until a date calculator
- Chinese zodiac sign calculator
- Weekend countdown
- Dog age in human years calculator
- Age in days / hours / minutes calculator
- Pregnancy due date calculator
- Week number calculator
- Moon phase calculator
- Day of the week you were born
- Birthday countdown
- School age calculator (school entry year)
- New Year countdown
- Summer countdown
- Date difference calculator
- Zodiac sign calculator
- Which generation are you (boomer, X, Z...)
- Christmas countdown
- Vacation countdown
- Shareable countdown timer generator
- Season dates (equinoxes and solstices)
- Wedding anniversary names
- Convert a date to Roman numerals (tattoo)
- Cat age in human years calculator
Health & fitness
- BMI calculator (body mass index)
- Ovulation calculator
- Calorie needs calculator
- Swimming pace calculator
- Steps ↔ kilometers converter
- Calories burned walking
- Running pace calculator
- Heart rate zone calculator
- VO2max estimator
- Body fat percentage calculator
- Daily water intake calculator
- Menstrual cycle calculator
Unit converters
- Unit converter (length, weight, temperature)
- Roman numeral converter
- Custom number base converter
- L/100km ↔ mpg converter
- Hat size converter
- Currency converter (offline rates)
- Decimal hours converter (payroll)
- Cooking unit converter
- Shoe size converter (EU/US/UK)
- km/h ↔ min/km converter
- Ring size converter
- Oven temperature converter (°C/°F/gas mark)
- Clothing size converter (EU/US/UK)
- Bra size converter
Copy-paste symbols
Home & DIY
Archives & files
Other calculators & handy tools
- Fuel cost calculator
- Bill splitting calculator
- Weighted grade average (GPA) calculator
- Multi-time-zone meeting planner
- Screen resolution/ratio calculator
- Love calculator (name compatibility)
- Prime number checker
- Business days between two dates calculator
- Rule of three calculator (cross-multiplication)
- Biorhythm calculator
- Prime factorization calculator
- GCD and LCM calculator
- Work hours calculator (simple time clock)
- Overtime pay calculator
- Leap year checker
- Ski size calculator
- Alcohol units calculator
- Life path number calculator
- Screen PPI/DPI calculator
- Percentage increase/decrease calculator
- Text reading time estimator
- Tip calculator
- Remaining vacation days calculator
- Tip split calculator for groups
- Sunrise and sunset calculator
- Simple carbon footprint calculator
- Speed - distance - time calculator
- Rule of 72 (doubling your money)
- Estimate a device's battery runtime
- Electricity cost calculator (appliances)
- Generic aspect ratio calculator
- Bike size calculator
- Party food quantity calculator
- Tire size calculator
- Coffee-to-water ratio calculator
- Friendship calculator
- Emergency fund calculator
- Event cost splitting calculator
- Estimate how many files fit in a storage space
- Recommended screen size by viewing distance
Other
- Convert a number written in words (French) to digits
- Random team generator
- Dice roller (2d6+3 notation)
- Lucky number generator
- Compare multiple subscriptions
- Paper size reference (A4, Letter...)
- Child adult height predictor
- Pomodoro timer
- Weighted random picker
- Copy-paste bullet points
- Format a phone number (FR / international)
- Birthstone by month
- Generate a structured brief for a client project
- Fibonacci sequence generator
- Format an IBAN (groups of 4)
- Birth flower by month
- Twin name generator
- Random decision wheel
- Multiple kitchen timers
- First name / last name match (sound)
- Recipe scaler (servings)
- Stopwatch with lap tracking