Hours:minutes ↔ decimal hours
Minutes/60. 8:45 is 8.75 hours, not 8.45.
Minutes-only helper
7 minutes = 0.12 hours (7 ÷ 60, rounded to 2 decimals), not 0.07.
Conversion · not a timesheet
- Hours:minutes
- 8:45
- Decimal hours
- 8.75
- Not this
- 8.45
8 hours 45 minutes = 8.75, NOT 8.45. Clock time is not decimal.
Not a timesheet, not overtime, not a paycheck. Not legal/payroll advice; rounding rules vary by employer.
This page converts clock time to decimal hours and back. It is not a timesheet, not overtime, and not a paycheck. It is not legal advice and not payroll advice. Rounding rules vary by employer. Confirm how your system rounds hundredths of an hour before you rely on a stub.
Minutes ÷ 60, not a decimal point
Clock time is not decimal. A colon is not a decimal point. Convert with minutes/60, then round to 2 decimals the way payroll often does. Reverse with round(decimal × 60) minutes. Punches stay on the time card. Overtime hours stay on overtime. Two-week sheets stay on biweekly. GROSS dollars stay on paycheck.
decimal hours = hours + (minutes ÷ 60)
then round to 2 decimals
8h 45m = 8 + 45/60 = 8.75 NOT 8.45
7 min = 7/60 = 0.1166… → 0.12 not 0.07
0 = 0.00
back: minutes = round(decimal × 60)
8.75 → 525 min → 8:45
0 → 0
Example: 8 hours 45 minutes = 8.75, NOT 8.45. Example: 7 minutes = 0.12 hours, not 0.07. Example: 8.75 → 8:45. Example: 0 → 0.
| Minutes | Decimal hours (2 dp) | Not this |
|---|---|---|
| 0 | 0.00 | 0.00 |
| 1 | 0.02 | 0.01 |
| 6 | 0.10 | 0.06 |
| 7 | 0.12 | 0.07 |
| 15 | 0.25 | 0.15 |
| 30 | 0.50 | 0.30 |
| 45 | 0.75 | 0.45 |
FAQ
Why isn’t 8 hours 45 minutes equal to 8.45?
Clock time is not decimal. Hours and minutes use a 60-minute hour, so 8 hours 45 minutes = 8 + 45/60 = 8.75, NOT 8.45. Writing the colon as a decimal point is the usual trap: 8:45 is eight hours and forty-five minutes, not eight and forty-five hundredths.
How do you convert hours and minutes to decimal hours?
Decimal hours = hours + (minutes ÷ 60). Then round to 2 decimals the way payroll often does. Example: 8 hours 45 minutes = 8 + 0.75 = 8.75. Minutes/60 is the whole conversion. This page is bidirectional: hours:minutes ↔ decimal hours.
Why is 7 minutes 0.12 hours, not 0.07?
7 minutes = 7/60 = 0.1166… hours. Round to 2 decimals the way payroll often does and you get 0.12, not 0.07. Putting a zero-point in front of the minute count (0.07) treats minutes as hundredths of an hour, which they are not.
How do you convert decimal hours back to hours and minutes?
Minutes = round(decimal hours × 60). Then split into hours and leftover minutes. 8.75 × 60 = 525 minutes → 8:45. 0 → 0. 0.12 × 60 = 7.2, which rounds to 7 minutes. This is the reverse of minutes ÷ 60.
Is this a timesheet, overtime calculator, or paycheck?
No. This is only the conversion explainer. It is not a timesheet, not overtime, and not a paycheck. Clock-in punches live on hourscard.com. Weekly overtime hours live on overtime. Two-week sheets live on biweekly. GROSS dollars live on paycheck. Annualizing an hourly rate ($20/hr → year) lives on hourly to salary. Use this page when you need 8:45 as 8.75.
Does decimal hours change my yearly salary math?
No. Decimal hours only rewrite a clock time (8:45 → 8.75). Yearly GROSS on hourly to salary multiplies a wage by hours per year (default 2,080 = 40 × 52). Converting lunch punches to decimals does not pick 2,080 vs 2,000 vs 1,920. Use this page for the timesheet cell; use salary for the annualization assumption. Neither is take-home pay.
Are tenths of an hour the same as decimal hours on this page?
No. Tenths charts usually map every 6 minutes to 0.1 (6→0.1, 12→0.2, 54→0.9). This page uses minutes ÷ 60 rounded to 2 decimals (hundredths): 7 minutes = 0.12, not 0.10; 1 minute = 0.02. A tenths chart would often show 7 minutes as 0.1 — that is a different rounding grid, not a bug on this converter. Confirm on your stub whether payroll uses tenths, hundredths, or 3-decimal systems. Not legal advice and not payroll advice. Punches / timesheet live on hourscard.com. Annualization on hourly to salary does not change with tenths vs hundredths.
Is 8.5 hours the same as 8 hours 50 minutes?
No. 8.5 decimal hours = 8 hours + 0.5 × 60 = 30 minutes → 8:30, not 8:50. Writing 8.50 as if it were clock time 8:50 is the same colon-as-decimal trap as typing 8.45 for 8:45. True 8 hours 50 minutes = 8 + 50/60 = 8.8333… → 8.83 at 2 decimals on this page. Reverse check: 8.5 × 60 = 510 minutes → 8:30. Punch totals live on hourscard.com; GROSS from rate × hours lives on paycheck. Not legal advice and not payroll advice.
Should I convert each day to decimals, then add — or add minutes first?
Prefer add minutes (or hours:minutes) for the week, then convert once. Rounding each day to 2 decimals and summing can drift. Fixture: five days of 7 minutes. Each day rounds 7/60 → 0.12; sum of daily decimals = 0.60. True total = 35 minutes = 35/60 = 0.5833… → 0.58 at 2 decimals — a 0.02 hour gap (~1.2 minutes) from rounding five times instead of once. Punch totals live on hourscard.com; this page only converts one clock time. Weekly overtime after 40 lives on overtime. Not legal advice and not payroll advice.
If I work 9 to 5 with an unpaid 30-minute lunch, is that 8.0 or 7.5 decimal hours?
7.5, not 8.0. Clock span 9:00–17:00 is 8 hours on the wall clock. An unpaid 30-minute lunch is 0.5 decimal hours (30 ÷ 60), so paid time = 8 − 0.5 = 7.5. Writing 9–5 as 8.0 without subtracting lunch overstates the day by half an hour. Reverse check: 7.5 × 60 = 450 minutes → 7:30 of paid time. Punch totals with lunch live on hourscard.com; GROSS from rate × hours lives on paycheck. Not legal advice and not payroll advice.
If I work a split shift — 4 hours in the morning and 3 hours 30 minutes in the evening — is that 7.5 decimal hours on this page?
Yes — 7.5. Morning 4:00 = 4.00 decimal hours. Evening 3:30 = 3 + 30/60 = 3.50. Sum = 7.50. Trap: writing 4.00 + 3.30 = 7.30 treats colon minutes as decimals (the same clock-is-not-decimal mistake as typing 8.45 for 8:45). Prefer add total minutes once (4×60 + 3×60 + 30 = 450) ÷ 60 = 7.5, then convert. This page converts one clock block with minutes ÷ 60 to 2 decimals; it does not merge punches. Punch pairs live on hourscard.com; weekly overtime after 40 lives on overtime. Not legal advice and not payroll advice.
If my week is 40 hours 30 minutes, does writing it as 40.5 decimal hours change whether I hit overtime?
No. Decimal hours are the same minutes written differently. Fixture: 40 hours 30 minutes = 40 + 30/60 = 40.50 decimal hours. Weekly OT after 40 still sees 0.5 hours OT either as clock or decimal — the threshold does not move because you converted. Trap: writing 40.30 for 40:30 understates the week by 0.20 hours (12 minutes) and can hide OT on a stub. This page only converts one clock time; the hours split lives on overtime; punches live on hourscard.com. Not legal advice and not payroll advice.
If my two-week period is 80 hours 15 minutes, is that 80.15 or 80.25 decimal hours on this page?
80.25, not 80.15. Fixture: 80 hours 15 minutes = 80 + 15/60 = 80.25 decimal hours. Trap: writing 80.15 treats colon minutes as hundredths — the same clock-is-not-decimal mistake as typing 8.45 for 8:45 — and understates the period by 0.10 hours (6 minutes). Reverse check: 80.25 × 60 = 4815 minutes → 80:15. Two-week sheets live on biweekly; GROSS from rate × hours lives on paycheck; punches live on hourscard.com. Not legal advice and not payroll advice.
If I earn $18 an hour and work 7 hours 45 minutes, do I multiply $18 × 7.45 or $18 × 7.75?
$18 × 7.75. Fixture: 7 hours 45 minutes = 7 + 45/60 = 7.75 decimal hours, so 7.75 × $18 = $139.50. Trap: $18 × 7.45 = $134.10 — $5.40 short for the day because colon minutes were read as hundredths. Cross-check without decimals: $18 ÷ 60 = $0.30 a minute × 465 minutes = $139.50. Five of those days is 38.75 hours = $697.50; the 7.45 mistake shows 37.25 hours = $670.50, $27.00 short for the week. This page only converts the time; GROSS from rate × hours lives on paycheck; the week of punches lives on hourscard.com; the yearly view lives on hourly to salary. Not legal advice and not payroll advice.
Does this match my employer’s payroll rounding?
Not legal advice and not payroll advice. Rounding rules vary by employer. This page rounds decimal hours to 2 decimals (7 minutes = 0.12) and converts back by rounding decimal × 60 to the nearest minute. Some systems keep 3 decimals, use a hundredths chart, or punch in tenths. Confirm the rule on your stub.