100 lightweight smart calculators

Fast, private and multilingual calculators for everyday needs.

📈Finance

📈Net salary 📈Mortgage payment 📈Crypto profit 📈Interest growth 📈VAT calculator 📈Investment ROI 📈Loan duration 📈Inflation impact 📈Hourly wage 📈Dividend yield

🍖Cooking

🍖Slow cooker timer 🍖Kitchen measurements 🍖Cake recipe scaler 🍖BBQ meat quantity 🍖Baker’s percentage 🍖Recipe calories 🍖Boiling point by altitude 🍖Cups to grams 🍖Alcohol dilution 🍖Rice water ratio

⚙️Developer tools

⚙️Config converter ⚙️Secure password ⚙️Base64 encoder ⚙️URL encoder ⚙️HEX RGB converter ⚙️Timestamp parser ⚙️Cron generator ⚙️HTML entities ⚙️MD5 hash generator ⚙️Regex tester

📐Math

📐Cross multiplication 📐Percentage calculator 📐Fraction reducer 📐Circle area 📐Triangle solver 📐Average calculator 📐Prime numbers 📐Quadratic equation 📐Standard deviation 📐Matrix determinant

🏃Health

🏃Body mass index 🏃Water intake 🏃Pregnancy due date 🏃BMR calories 🏃Heart rate zone 🏃Body fat Navy 🏃Macro split 🏃Smoking cost 🏃Sleep cycle 🏃Blood alcohol

⛽Automotive

⛽Fuel consumption ⛽EV charging cost ⛽Car depreciation ⛽Speed converter ⛽Braking distance ⛽Horsepower kW converter ⛽Oil change tracker ⛽Trip cost ⛽Tire size calculator ⛽Engine displacement

📅Daily life

📅Age calculator 📅Word count 📅Timezone planner 📅Unit converter 📅Days between dates 📅Binary clock 📅Shopping discount 📅Tip calculator 📅Gregorian Hijri converter 📅Life expectancy

☀️Home & energy

☀️Solar PV yield ☀️Electricity cost ☀️Heat pump efficiency ☀️CO₂ footprint ☀️Battery runtime ☀️LED lumens per watt ☀️Water heating energy ☀️Insulation ROI ☀️Air renewal rate ☀️Wire voltage drop

🏒Sports

🏒Hockey points 🏒Running pace 🏒VO₂max estimate 🏒Tournament bracket 🏒Sport calories burned 🏒Swim pace 🏒Cycling power 🏒Athlete BMI 🏒One rep max 🏒Sport hydration

📊Marketing

📊CTR calculator 📊CPC calculator 📊Marketing ROI 📊CLV calculator 📊CAC estimator 📊Engagement rate 📊Conversion funnel 📊ROAS calculator 📊A/B test significance 📊Email open rate