Convert cubic feet to cubic yards instantly. 27 ft³ = 1 yd³ exactly. Free ft³ to yd³ calculator for construction, landscaping, and material estimation.
OmniCalculator.Space is your ultimate hub of 4,000+ smart calculators — from GPA to BMI, EMI to ROI. Every calculation, one space.
Convert cups to liters instantly. Supports US customary, US legal, metric & Imperial cups. Free cups to liters calculator with step-by-step math.
Convert cc to fluid ounces instantly. Supports US and Imperial fl oz. Free cubic centimeters to ounces calculator for medical and cooking applications.
Convert cc to mL instantly. 1 cc = 1 mL exactly. Free cubic centimeters to milliliters calculator for medical, automotive, and scientific applications.
Calculate the number of weeks between two dates. Find the ISO week number for any date. Add or subtract weeks from a specific date.
Convert hours, minutes, and seconds into decimal hours (e.g., 8:30 to 8.5). Supports rounding settings for payroll and timesheets (nearest 0.25, 0.1, etc.).
Calculate total duration from multiple time blocks (start/end times). Perfect for timesheets, tracking work hours, and subtracting breaks.
Calculate the exact time difference between two dates and times. Supports different timezones for start and end times. Shows duration in days, hours, minutes.
Subtract a duration from a specific time or find the difference between two time durations. Calculate "What time was it X hours ago?" easily.
Calculate Greenwich Mean Sidereal Time (GMST) and Local Sidereal Time (LST) for your longitude. Essential for astronomy, telescope pointing, and star tracking.