Calculators

Calculates the time difference between two dates, providing results in days, weeks, and years.

Calculates the amounts of concentrate and water needed to achieve a specific dilution ratio.

Converts between various units of time, including milliseconds, seconds, minutes, hours, days, weeks, months, and years.

Converts weight between various units, including grams, kilograms, ounces, pounds, milligrams, and more.

This calculator converts between 21 different volume units, including metric and imperial units. It uses a volume conversion chart for accurate and seamless calculations.

Converts the amount from CCF (hundred cubic feet) to gallons.

Calculates the thread pitch of a threaded fastener, given measurements.

Estimates body fat percentage using the US Navy Circumference Method. This method requires height, waist circumference, and neck circumference for men, and height, waist circumference, neck circumference, and hip circumference for women.

This calculator determines the optimal spacing for planting bulbs based on the bulb's diameter and the desired spacing factor.

Calculates the magnification power of a lens based on focal length or object/image distances.