---
title: "15 minutes on a timesheet"
url: "https://timeretain.com/tools/15-minutes-on-timesheet"
description: "15 minutes on a timesheet is 0.25 hours, not 0.15. Convert minutes to decimal hours, tenths, and quarter hours. The numbers stay in your browser."
---

# 15 minutes on a timesheet

15 minutes is 0.25 hours. 0.15 hours is 9 minutes. Type one value and the others update.

The converter runs in the browser. Enable JavaScript to type a different duration. The chart below already shows 0–60 minutes.

## Why 15 minutes is 0.25, not 0.15

A timesheet hour is 60 minutes. Decimal hours count fractions of that hour, not a clock-style hours.minutes pair.

15 minutes is 15 ÷ 60, which is 0.25 hours.

0.15 looks like “15” after a decimal point. It is 15 hundredths of an hour: 0.15 × 60 = 9 minutes.

The same mix-up turns 1 hour 15 minutes into 1.15. That would be 1 hour and 9 minutes. The decimal value is 1.25.

## Tenths, hundredths, and quarter hours

Forms do not all want the same conversion.

Minutes

Decimal hours

Tenths (6 min)

Quarter hour

9

0.15

0.2

0.25

15

0.25

0.3

0.25

20

0.33

0.3

0.25

45

0.75

0.8

0.75

Decimal hours are minutes divided by 60. 20 minutes is 0.33. 45 minutes is 0.75.

Tenths of an hour are 6-minute steps. 15 minutes sits between 12 minutes (0.2) and 18 minutes (0.3). Charts that round the midpoint up write 0.3.

45 minutes sits between 42 minutes (0.7) and 48 minutes (0.8).

Quarter hours are 15-minute steps. 15 minutes is already 0.25. 20 minutes goes to 0.25. 45 minutes is 0.75.

Tenths and quarter hours are the nearest 6-minute or 15-minute block. This page does not apply a payroll policy.

If a contract rounds every entry to the next quarter hour, that is a billing rule, not this conversion. [Timesheet rounding](/blog/what-is-timesheet-rounding) covers that split.

## Keep exact minutes in the record

Write 0.25 on the form when the form asks for decimal hours. Keep 15 minutes in the record you store.

A converted number is easier to type into a decimal-hours field. It is no longer the duration you worked. If you store 0.3 instead of 15 minutes, you cannot tell later whether the extra 3 minutes came from tenths rounding or from the work.

TimeRetain stores start and stop times as they happened, on your device. Convert a duration here when a client form wants 0.25 instead of 15 minutes.

If you already have a sheet of rows, the [billable hours calculator](/tools/billable-hours-calculator) totals them as written. It does not convert minutes to tenths for you.

## Questions and Answers

### What is 15 minutes on a timesheet?

15 minutes is 0.25 hours. Writing 0.15 would mean 9 minutes, because 0.15 is 15 hundredths of an hour, not 15 minutes.

### What is 45 minutes on a timesheet?

45 minutes is 0.75 hours. On a tenths timesheet it is 0.8 hours, because 45 minutes sits between 42 minutes (0.7) and 48 minutes (0.8).

### What is 20 minutes on a timesheet?

20 minutes is 0.33 hours when you divide by 60. A tenths timesheet writes 0.3 hours, and a quarter-hour timesheet writes 0.25 hours.

### Why is 0.15 hours not 15 minutes?

Decimal hours count fractions of a 60-minute hour, not a clock-style hours.minutes pair. 0.15 × 60 = 9 minutes.

### Does this converter round my timesheet?

No. Exact decimal hours are minutes divided by 60. Tenths and quarter hours are the nearest 6-minute or 15-minute block. Your contract may use a different rule.