The full Calculators collection — open any tool directly in your browser.
Simplify ratios to lowest terms, find equivalent ratios, and scale any A:B ratio instantly. Free online ratio calculator — no registration required.
Calculate the difference between two dates or add and subtract days from any date. Free online date calculator — no registration required.
Calculate your exact age in years, months, days, hours, and minutes from any birth date. Free online age calculator — no registration required.
Add or subtract times and calculate the duration between two timestamps in HH:MM:SS format. Free online time calculator — no registration required.