Numbers that make sense instantly.

Calculates "X percent of a number". Change the values and the result updates instantly.

Calculates exact age based on today's date.

Rates are fixed sample values — not live market rates. Check your bank for the current rate.

For guidance only — doesn't account for muscle mass, age, or body type.

Calculated as an annuity loan (fixed payment). For guidance only — excludes fees.

Uses the Danish VAT rate of 25%.

Counts full days between the two dates.

Converts between km, m, cm, miles, and feet.

Shows how many days remain until a future date.

Enter the UTC offset for both zones. Does not auto-adjust for daylight saving.

Estimates daily calorie needs using the Mifflin-St Jeor formula. For guidance only.

Splits the amount evenly, including any tip.

Du sparer 269,70 kr.

Converts between kg, pounds (lbs), and stone.

Interest compounds monthly. For guidance only — no guaranteed return.

Based on 52 weeks per year. Shows gross pay, not after-tax income.

Converts between Celsius, Fahrenheit, and Kelvin.

Calculates the average of up to 5 numbers. Empty fields are ignored.

Uses the Devine formula. For guidance only — not medical advice.

Calculates the area of a rectangle from length and width.

Counts words and characters in the text as you type.

Generates a random password right in your browser. Nothing is stored or sent anywhere.