Decimal Hours Chart
Free decimal hours chart. See every minute from 1 to 60 as a decimal, then print it or convert any minute count.
Free. No sign-up. Runs in your browser. Nothing you type is sent anywhere.
Minutes to decimal hours chart
Pick two or three decimal places above, then print the chart if you want a copy for the wall.
How the chart works
Each row is the minutes divided by 60, rounded half up to the number of places you pick. 20 minutes is 20 / 60 = 0.3333, so it shows as 0.33 at two places and 0.333 at three. That is why 20 minutes does not show as 0.3: 0.3 hours is exactly 18 minutes.
For hours and minutes together, add the hours to the chart value. 7 hours 50 minutes is 7 plus 0.83, which is 7.83. To go the other way, or to convert a longer time, use the Hours to Decimal Calculator.
Worked example
7 hours 50 minutes: 50 / 60 = 0.8333, so the total is 7 + 0.83 = 7.83 hours at two places. And 20 minutes alone is 0.33 hours. Type 20 in the box above, or press Fill example, to see its row highlighted in the chart.
Questions people ask
How do I convert minutes to decimal hours?
Divide the minutes by 60. 45 minutes is 0.75 hours. Find the minute in the chart for a quick lookup.
What is 15 minutes as a decimal?
15 minutes is 0.25 hours, a quarter of an hour. 30 minutes is 0.50 and 45 minutes is 0.75.
Why does 20 minutes show as 0.33 and not 0.3?
20 / 60 is 0.3333 and keeps going, so it has to be rounded. At two places it is 0.33. 0.3 hours would be 18 minutes. Rounding to a single place would change the answer by 2 minutes.
What are tenth-hour and quarter-hour charts?
A tenth-hour chart counts time in steps of 0.1 hour, which is 6 minutes. A quarter-hour chart counts in steps of 0.25 hour, which is 15 minutes. Both are shown below the main chart. Employers who record time this way round each punch to a step.
Can I use this chart for payroll?
Use it to check a conversion, but follow the rounding method your payroll provider or employer documents. Some systems truncate, round to the nearest tenth, or convert once per day instead of once per week, and the totals can differ by a hundredth of an hour or so.
About this calculator
Every number in this chart is generated by code in your browser from the minutes divided by 60, rounded half up to the places you choose. I checked all 60 rows at both two and three places against a separate calculation before publishing, and 20 minutes (0.33) and 7:50 (7.83) are the named cases. No outside rule is cited because this is arithmetic.
If your payroll provider uses a different rounding method, the chart is a starting point, not a replacement for their rule.
Results are mathematical conversions. Use the rounding your payroll provider documents.