Quick answers to everyday math
No installs, no sign-ups, no "calculate" button. Type a number and the answer appears instantly. Every calculation runs right in your browser โ nothing you enter is ever sent to a server.
All calculators
Age Calculator
Exact age in years, months, days + next birthday countdown
Baby & Child Growth Percentile Calculator
Height & weight percentiles โ WHO (0โ24 mo) + CDC (2โ20 yr)
Binge Watch Calculator
Episodes ร runtime โ days to finish
Date Calculator
Days between dates ยท countdown ยท 30/60/90 days from today
Gold Price in Tola, Baht, Tael & Troy Ounce
Gold in tola, baht, tael or troy ounce
Hourly Wage Calculator
Hourly โ salary with US, UK and EU rules
Korea Electricity Bill Calculator
Korea's progressive tiers, explained in English
Love Calculator
FLAMES + love % from two names โ the classic paper game
Percentage Calculator
Percent of a number ยท increase/decrease ยท discounts
Power Bank Flight Rules
mAh โ Wh, and whether it's allowed on board
Ring Size Converter
Finger circumference or diameter โ US, EU, JP/KR sizes
TDEE Calculator
Calories you burn per day (TDEE + BMR, Mifflin-St Jeor)
Time Zone Difference Calculator
City-to-city time difference ยท time converter ยท DST-aware
Unit Converter
Inches, cm, feet and pounds side by side
Wheel Spinner & Random Picker
Spin the wheel or race marbles down a long track ยท order & fair teams too