Convert minutes to decimal hours with billing increment rounding, bidirectional conversion, and a complete 0-60 minute reference table.
This converter turns minutes into decimal hours, which is the format most payroll, invoicing, and time-tracking systems expect. Instead of keeping time in clock format such as 1 hour 15 minutes, it converts the same duration into a decimal value such as 1.25 hours. That is useful when you need a single number that can be totaled, filtered, or imported into another system without extra formatting.
It also supports billing-style rounding for common professional increments like 6, 10, 15, or 30 minutes. That makes it useful for legal, consulting, support, and freelance work where time must be logged and billed in a standard decimal format. The rounding display is especially helpful when your timekeeping software stores clock time but your billing system wants a decimal subtotal.
Use it when time is recorded in minutes but the system you report into expects decimal hours. The page shows both the raw decimal and the billed value so you can compare them quickly.
Clock time is easy to read, but decimal hours are easier to total, invoice, and import into payroll systems. This page handles that conversion directly and includes the rounding rules many professional workflows actually use. It is especially helpful when you need to match a client billing rule or a payroll export format exactly.
Decimal Hours = Minutes ÷ 60. Billed Hours = ceil(Minutes ÷ Increment) × Increment ÷ 60. Clock from Decimal: Hours = floor(decimal), Minutes = (decimal − Hours) × 60.
Result: 45 min = 0.75 decimal hours, billed as 0.80 hours (48 min at 6-min increment)
45 minutes divided by 60 gives 0.75 decimal hours. Rounded up to the next 6-minute increment (48 minutes) gives 0.80 billed hours.
Most payroll and accounting systems use decimal hours. Employees track 8.5 hours rather than "8 hours 30 minutes." Government contractors, law firms, and consulting companies universally use decimal time for billing and compliance.
The American Bar Association notes that most law firms bill in 6-minute (0.1 hour) increments. Accounting firms often use 15-minute (0.25 hour) increments. IT companies may use 30-minute or hourly blocks. The choice of increment significantly affects total billable revenue.
Record time as you work, not at the end of the day. Use time-tracking software that captures start/stop times. This converter then translates the actual minutes worked into the decimal format required by your billing system.
45 minutes equals 0.75 decimal hours because 45 divided by 60 is 0.75. That is one of the most common values to memorize for quick conversions.
0.25 hours equals 15 minutes because 0.25 times 60 is 15. It is a common billing increment in many office workflows.
Billing increments round up to the next multiple. With 6-minute increments, 7 minutes of work becomes 12 minutes or 0.2 hours, and with 15-minute increments, 7 minutes becomes 15 minutes or 0.25 hours.
Six minutes equals 0.1 hours, which makes the billing math easy to total. That standard also keeps invoices consistent across firms and matters.
1 hour 20 minutes equals 1 + (20/60) = 1.333 decimal hours. The same rule works for any combination of hours and minutes.
Divide minutes by 60. For minutes and seconds, use (minutes + seconds/60) ÷ 60, so 45 min 30 sec becomes 0.7583 hours after conversion.