Convert minutes to decimal hours with billing increment rounding.
Billing increments round each entry up, so many short entries accumulate more uplift than a few long ones. A fifteen-minute increment applied to two-minute tasks bills more than seven times the time worked. This is why increment size matters more than hourly rate for work made up of many small interruptions.
Minutes to Decimal Hours
Billable hours = ⌈minutes ÷ increment⌉ × increment ÷ 60
Billable hours = ⌈minutes ÷ increment⌉ × increment ÷ 60 Billing increments round each entry up, so many short entries accumulate more uplift than a few long ones. A fifteen-minute increment applied to two-minute tasks bills more than seven times the time worked.
This is why increment size matters more than hourly rate for work made up of many small interruptions.
This calculator takes 3 inputs: Minutes worked, Billing increment, Hourly rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.