120 Day Calculator

Quickly calculate the date that is 100 days from a starting date. Perfect for tracking 100-day challenges or project milestones.

Calculate the date that is 180 days (about six months) from a specific start date. Ideal for setting semi-annual goals or deadlines.

A simple tool to find the date that is exactly 30 days from a given start date. Commonly used for trial periods and monthly planning.

Quickly add or subtract 30 minutes from any given time. A handy tool for scheduling meetings, breaks, or appointments.

Find the date that is 45 days from a specific start date. Useful for tracking mid-quarter deadlines and other short-term goals.

Quickly calculate the end time of an 8-hour work shift from a given start time.

Quickly find the exact date that was 90 days before today or any other specified date. Useful for tracking deadlines and timelines.

Add hours, minutes, and seconds to a starting time to find a future time and date.

Calculate your car's 0-60 mph time based on its horsepower and weight.

Estimate your self-employment taxes as a freelancer or independent contractor. Helps you plan for quarterly tax payments and avoid surprises.

Project the growth of your 401(k) retirement savings over time. See how contributions, employer match, and investment returns can impact your nest egg.

Project the future value of a 529 college savings plan. See how your contributions can grow over time to help fund educational expenses.

Convert your A1c level to an Estimated Average Glucose (eAG) number. A vital tool for individuals with diabetes to understand their blood sugar control.

Calculate the Alcohol By Volume (ABV) of your homebrew beer, wine, or cider by providing the original and final gravity readings.

Convert between units of angular acceleration.

Convert between units of acceleration like m/s² and g-force.