What is a 6-minute increment in legal billing?

A 6-minute increment is one-tenth (1/10th) of an hour, equal to 0.1 decimal hours. It's the standard billing unit used by law firms in the UK, Australia, Canada, and USA. Each hour is divided into 10 units of 6 minutes each, making it easy to calculate fees.

Why do lawyers bill in 6-minute increments?

Billing in 6-minute increments balances accuracy and simplicity. It captures value from short tasks like emails (1 unit = 0.1 hours) while keeping calculations simple since 10 units equals exactly 1 hour. This method is fairer to clients than 15-minute increments.

How do I convert 18 minutes to billable hours?

To convert 18 minutes: divide by 6 to get 3 billable units. Each unit = 0.1 hours, so 18 minutes = 0.3 billable hours. At $300/hour, this equals $90.00.

What is 0.1 hour in minutes?

0.1 hour equals 6 minutes. This is one billable unit in the 6-minute increment system used by legal professionals. 0.2 hours = 12 minutes, 0.3 hours = 18 minutes, and so on up to 1.0 hour = 60 minutes.

Is this calculator free to use for solicitors in the UK?

Yes, this 6-minute increment calculator is completely free for solicitors, barristers, and legal professionals in the UK. No account or subscription required. It works the same as expensive practice management software for time conversion.

How do Australian law firms track billable hours?

Most Australian law firms use 6-minute billing increments, dividing each hour into 10 units. This is the same system used in the UK, Canada, and USA. This free calculator works for Australian lawyers to convert minutes to decimal hours instantly.

What is a free alternative to Clio for time tracking?

This 6-minute increment calculator is a free alternative to Clio for basic time conversion. It includes a built-in timer, multi-entry mode, and reference chart. Ideal for solo practitioners and small law firms who find Clio too expensive or complex.

How do paralegals track billable time?

Paralegals use the same 6-minute increment system as lawyers for billable work. Enter minutes worked on legal tasks (research, drafting, client communication) and the calculator converts to decimal hours for invoicing. Non-legal clerical tasks are typically non-billable.

What is the 6-minute rule for billing?

The 6-minute rule means any task is rounded UP to the next 6-minute block. A 1-minute phone call is billed as 6 minutes (0.1 hours). A 7-minute email is billed as 12 minutes (0.2 hours). This ensures professionals are compensated for starting work on a matter.

Is it legal and ethical to round up billable time?

Yes, rounding up to the next billing increment is standard practice and ethical when applied consistently and disclosed to clients in your fee agreement. The Law Society and bar associations accept this practice as industry standard.

How many billable hours should a lawyer aim for?

Most law firms expect 1,800-2,000 billable hours per year, or about 6-7 hours per day. Using a 6-minute increment calculator helps ensure you capture all time accurately and avoid losing hours due to poor tracking.

Can I use this for 15-minute or 10-minute increments?

Yes! The dropdown menu lets you switch between 6-minute (0.1 hr), 10-minute (1/6 hr), 15-minute (0.25 hr), and 30-minute (0.5 hr) increments to match your firm's billing policy.

What's the difference between 6-minute and 15-minute billing increments?

6-minute increments (0.1 hour) are more granular than 15-minute increments (0.25 hour). Firms using 6-minute billing capture 15-20% more revenue by accurately billing for short tasks that would be under-billed with 15-minute blocks.

How do I calculate billable hours for payroll?

Enter total minutes worked in the calculator. It converts to decimal hours using your chosen increment. For example, 4 hours 24 minutes = 264 minutes = 44 units = 4.4 decimal hours for payroll at 6-minute increments.

What is 0.25 hours in minutes?

0.25 hours equals 15 minutes. This is one billing unit when using 15-minute increments. In the 6-minute system, 15 minutes would be billed as 0.3 hours (3 units of 6 minutes each, rounding up from 2.5).

What is the 7-minute rule for payroll rounding?

The 7-minute rule is used for 15-minute rounding: if an employee works 7 minutes or less past the quarter hour, round down; if 8 minutes or more, round up. For 6-minute increments, any time past the 6-minute mark rounds up to the next unit. This calculator automates both methods.

How do CPAs and accountants bill their time?

CPAs and accountants typically use 6-minute increments (0.1 hour) for billable work like tax preparation, auditing, and consulting. This matches the legal industry standard and ensures accurate billing for phone calls, emails, and short tasks.

How do IT consultants track billable hours?

IT consultants use decimal hour billing with 6-minute or 15-minute increments to track project work, support calls, meetings, and travel time. This calculator converts any minutes worked into billable decimal hours for client invoicing.

How do I convert minutes to tenths of an hour?

To convert minutes to tenths: divide minutes by 6 and round UP. Examples: 5 minutes = 1 tenth (0.1 hr), 8 minutes = 2 tenths (0.2 hr), 15 minutes = 3 tenths (0.3 hr). Each tenth represents a 6-minute billing unit.

What is 0.5 hours in minutes?

0.5 hours equals 30 minutes, or 5 billing units in the 6-minute increment system. This is also equivalent to half an hour or 2 units in the 15-minute increment system (0.25 × 2 = 0.5).

What is 0.75 hours in minutes?

0.75 hours equals 45 minutes. In 6-minute increments, 45 minutes is billed as 0.8 hours (8 units, since 45 ÷ 6 = 7.5 rounds UP to 8). In 15-minute increments, it equals exactly 3 units (0.25 × 3 = 0.75).

Is there a printable 6-minute increment chart I can download?

Yes! Our complete 6-minute increment chart on this page shows all conversions from 1-60 minutes. You can print this page directly from your browser (Ctrl+P or Cmd+P) for a quick reference chart to keep at your desk.

How do therapists and counselors bill for non-session time?

Therapists use 6-minute increments to bill for work outside of sessions, such as writing notes, phone calls with other providers, report writing, and case reviews. A 10-minute call would be billed as 0.2 hours (2 units).

Home › Legal Billing › 6-Minute Increment Calculator

6-Minute Increment Calculator

Convert minutes worked into 1/10th hour (0.1) legal billing increments with standard rounding rules.

✓ IEEE-754 Precision Verified Platform v3.1.0 • CKE v2.4 Reviewed: August 2026

📥 Input Parameters

📊 Live Calculation Output

Billed Tenths (0.1 Hours)

1.30 hrs

Billable Units: 3 tenths (0.3 hrs)

Exact Decimal: 1.250 hrs

Rounding Applied: Ceiling to nearest 6 min

Result Interpretation

1.30 decimal hours equals 1 hour and 18 minutes of billable time under standard 6-minute legal tenths rounding.

Legal Billing Best Practice

In legal practice, 1 to 6 minutes converts to 0.1 hours (1 tenth). 7 to 12 minutes converts to 0.2 hours (2 tenths).

Invoice Transparency

Always itemize raw start/end times alongside billable tenths to ensure seamless client audit compliance.

Workflow Action Center

6-Minute Tenths Billing Formula

Billed Tenths = Ceiling(Minutes ÷ 6) × 0.1

Step-by-Step Calculation Breakdown

Step 1

Input Raw Minutes

Enter the total minutes worked (e.g., 15 minutes).

Step 2

Divide by Increment

Divide raw minutes by 6 (15 ÷ 6 = 2.5 units).

Step 3

Apply Ceiling Rounding

Round up partial units to the next integer (2.5 -> 3 units).

Step 4

Convert to Decimal Hours

Multiply units by 0.1 (3 × 0.1 = 0.3 decimal hours).

Industry Application Context

⚖️ Law Firms & Legal Practice

Used by lawyers, solicitors, and paralegals to invoice clients in 1/10th hour increments.

🏢 Corporate Payroll

Used for employee timecards under FLSA 7-minute rounding rules.

Real-World Calculation Examples

Quick Client Call (4 mins)

4 mins → 0.1 hrs (1 tenth)

4 mins divided by 6 is 0.67, which rounds up to 1 unit (0.1 hrs).

Contract Review & Redlining (15 mins)

15 mins → 0.3 hrs (3 tenths)

15 mins divided by 6 is 2.5, which rounds up to 3 units (0.3 hrs).

Common Pitfalls & Warnings

⚠️ Confusing Decimal Hours with Clock Minutes

Mistaking 2.30 decimal hours for 2 hours and 30 minutes.

Correct Approach: 2.30 decimal hours equals 2 hours 18 minutes. Use 2.50 decimal hours for 2 hours 30 mins.

⚠️ Rounding Down Billable Time

Using standard math rounding (round down) instead of legal ceiling rounding.

Correct Approach: Legal retainer rules specify ceiling rounding (rounding up to the next 6-minute increment).

Key Terminology Glossary

Tenths (0.1)

A 6-minute billing unit standard in law firms worldwide (10 tenths = 1 hour).

Ceiling Rounding

A mathematical rounding function that always rounds fractional units up to the nearest integer.

FLSA 7-Minute Rule

US Department of Labor payroll rounding rule permitting 1-7 mins to round down and 8-14 mins to round up.

Continue Your Workflow Journey

Suggested Next Step: Calculate Total Client Invoice Amount

Hours & Minutes to Decimal → Payroll Timecard Rounding → Consultant Billable Hours →

Verified Platform Confidence Layer

✓ Formula Reviewed & Tested

✓ FLSA Rounding Compliant

✓ Zero Tracker Latency

✓ WCAG 2.2 AA Accessible

✓ IEEE-754 Double Precision

Interactive Tool Controls

Convert minutes to billable decimal hours instantly. The free time tracking tool for lawyers, solicitors, paralegals & consultants.

Minutes → Hours
Hours → Minutes

Time Worked (in minutes)

Currency

Hourly Rate (Optional)

Billing Increment

Your Profession

Advanced Features

Show Timer

Enable Multi-Entry

This is an example calculation. Enter your own numbers in the form above to begin.

Calculation Breakdown

Time Worked
25 minutes

Hourly Rate
$150.00/hr

Billed in 6-minute increments, this rounds up to 5 billable units.

Billable Time

0.50 hours

Billable Amount

$75.00

Everything About Time to Decimal Conversion

Complete 6-Minute Increment Chart (1-60 Minutes)

6-Minute Billing Increment Conversion Chart

This complete reference chart shows how every minute from 1-60 converts to billable units and decimal hours using the standard 6-minute billing increment (0.1 hour) system used by law firms worldwide.

6-Minute Increment Billing Chart - Minutes to Decimal Hours Conversion for Legal Professionals
Minutes Worked	Billable Units (Tenths)	Decimal Hours
1 min	1	0.10 hr
2 min	1	0.10 hr
3 min	1	0.10 hr
4 min	1	0.10 hr
5 min	1	0.10 hr
6 min	1	0.10 hr
7 min	2	0.20 hr
8 min	2	0.20 hr
9 min	2	0.20 hr
10 min	2	0.20 hr
11 min	2	0.20 hr
12 min	2	0.20 hr
13 min	3	0.30 hr
14 min	3	0.30 hr
15 min	3	0.30 hr
16 min	3	0.30 hr
17 min	3	0.30 hr
18 min	3	0.30 hr
19 min	4	0.40 hr
20 min	4	0.40 hr
21 min	4	0.40 hr
22 min	4	0.40 hr
23 min	4	0.40 hr
24 min	4	0.40 hr
25 min	5	0.50 hr
26 min	5	0.50 hr
27 min	5	0.50 hr
28 min	5	0.50 hr
29 min	5	0.50 hr
30 min	5	0.50 hr
31 min	6	0.60 hr
32 min	6	0.60 hr
33 min	6	0.60 hr
34 min	6	0.60 hr
35 min	6	0.60 hr
36 min	6	0.60 hr
37 min	7	0.70 hr
38 min	7	0.70 hr
39 min	7	0.70 hr
40 min	7	0.70 hr
41 min	7	0.70 hr
42 min	7	0.70 hr
43 min	8	0.80 hr
44 min	8	0.80 hr
45 min	8	0.80 hr
46 min	8	0.80 hr
47 min	8	0.80 hr
48 min	8	0.80 hr
49 min	9	0.90 hr
50 min	9	0.90 hr
51 min	9	0.90 hr
52 min	9	0.90 hr
53 min	9	0.90 hr
54 min	9	0.90 hr
55 min	10	1.00 hr
56 min	10	1.00 hr
57 min	10	1.00 hr
58 min	10	1.00 hr
59 min	10	1.00 hr
60 min	10	1.00 hr

This chart is used by solicitors in the UK, lawyers in Australia and Canada, and attorneys in the USA for accurate billable hour calculations.

Understanding the Math
Converting minutes to billable decimal hours follows a simple, two-step formula. This method ensures fair billing by rounding up to the nearest billing unit.
1. Calculate Billable Units: First, divide the total minutes worked by your billing increment. Since you must bill for the full increment you started working in, always round the result up to the next whole number.
  Formula: Billable Units = CEILING(Total Minutes / Increment)
2. Convert to Decimal Hours: Next, multiply your billable units by the decimal equivalent of your increment (e.g., 0.1 for 6 minutes, 0.25 for 15 minutes).
  Formula: Decimal Hours = Billable Units * (Increment / 60)
Example: For 8 minutes worked using a 6-minute increment:
1. Billable Units = CEILING(8 / 6) = CEILING(1.33) = 2 units
2. Decimal Hours = 2 * (6 / 60) = 2 * 0.1 = 0.20 hours
Why Bill in Decimal Hours?
Switching from minutes to decimal hours for invoicing might seem like a small change, but it has significant benefits for professionals:
- Accuracy and Fairness: It provides a standardized and transparent way to bill for time, ensuring you're compensated for every part of an hour you work.
- Simplified Invoicing: Multiplying decimal hours by your hourly rate is far simpler and less error-prone than calculating fractions of an hour. It makes accounting and payroll a breeze.
- Increased Profitability: By using smaller increments like 6 minutes (0.1 hours), you capture revenue from short tasks like quick emails or phone calls that are often forgotten or under-billed.
Who Uses This Billing Method?
Billing in 6-minute increments (0.1 hour) is the standard practice across professional service industries in the UK, Australia, Canada, and the USA. The most common users include:
- Lawyers & Solicitors: The most well-known users. Attorneys in the US, solicitors and barristers in the UK, and legal professionals across Australia and Canada all bill in 6-minute (0.1 hr) or 15-minute (0.25 hr) increments.
- Freelance Paralegals: Independent paralegals working with solo practitioners track billable time for legal tasks like research, drafting, and discovery management using this same system.
- Solo Practitioners & Small Firms: Attorneys in smaller practices who need a simple, free alternative to expensive software like Clio use tools like this calculator.
- Consultants & Freelancers: Independent professionals in IT consulting, marketing, and management use decimal hour billing for project work and client meetings.
- Accountants & CPAs: For tasks like tax preparation and financial consulting, billing by the tenth of an hour is standard practice.
- Psychologists & Therapists: Additional work like report writing or consultations outside regular sessions may be billed this way.
This calculator is trusted by legal professionals worldwide, from London solicitors to Australian law firms to Canadian attorneys.
Best Practices for Timekeeping
- Log Time Immediately: Record tasks as soon as you complete them to avoid forgotten details and lost billable hours.
- Be Descriptive: Detailed entries justify your invoice and help clients understand the value you provide.
- Be Transparent: Clearly communicate your billing increments and policies to clients from the outset to avoid disputes.
For Payroll & HR: Time Clock to Decimal Conversion
Converting Employee Time Clock to Decimal Hours

HR professionals and payroll managers use decimal hours to calculate employee wages accurately. This calculator supports common payroll rounding methods:
- 6-Minute Rounding (0.1 hr): Most precise method. 7 minutes becomes 0.2 hours. Ideal for salaried exempt employees and professional services.
- 15-Minute Rounding (7-Minute Rule): Round to nearest quarter hour. 1-7 minutes rounds down, 8-14 minutes rounds up. Commonly used for hourly employees.
- Exact Decimal: Divide minutes by 60 for precise conversion. 23 minutes = 0.383 hours. Used when precision is critical.
Example for Payroll: Employee clocks in at 8:05 AM and out at 4:47 PM.
- Total time: 8 hours 42 minutes
- At 6-minute increments: 8.7 decimal hours (42 min ÷ 6 = 7 units)
- At hourly wage of $18.00: $156.60 gross pay
This tool is FLSA-compliant when used consistently with your company's rounding policy.
Common Billing Mistakes to Avoid
- Under-billing: Forgetting short tasks like emails is the most common way professionals lose money. Every 6-minute increment counts.
- Vague Descriptions: Poorly described time entries can lead to client disputes and invoice write-offs. Specificity builds trust.
- Using Manual Systems: Spreadsheets are prone to error. Automated software provides a huge return on investment by preventing mistakes.
Choosing the Right Time Tracking Software
While this calculator is great for quick conversions, dedicated software can automate your entire workflow. When choosing a tool, look for these key features:
- Automatic Timers: One-click start/stop timers that run on your desktop or phone eliminate manual entry.
- Invoice Generation: The tool should automatically convert your tracked time into professional, client-ready invoices.
- Integration: Look for integrations with your existing accounting (QuickBooks, Xero) or project management (Asana, Trello) software.
- Reporting: Good software provides insights into project profitability, team productivity, and unbilled hours.
Real-World Calculation Examples
Here are common billing scenarios showing how minutes convert to billable decimal hours:
Quick Phone Call

A solicitor takes a 4-minute call with a client.

4 min ÷ 6 = 0.67 → rounds UP to 1 unit

1 unit × 0.1 = 0.1 hours

At £250/hr = £25.00
Email Review & Reply

A paralegal spends 8 minutes reviewing and replying to client emails.

8 min ÷ 6 = 1.33 → rounds UP to 2 units

2 units × 0.1 = 0.2 hours

At $150/hr = $30.00
Contract Review

A lawyer reviews a contract for 47 minutes.

47 min ÷ 6 = 7.83 → rounds UP to 8 units

8 units × 0.1 = 0.8 hours

At A$400/hr = A$320.00
Court Appearance

A barrister spends 2 hours 18 minutes in court (138 minutes).

138 min ÷ 6 = 23 → exactly 23 units

23 units × 0.1 = 2.3 hours

At C$500/hr = C$1,150.00

Quick Conversion Reference (with Billing Rates)

Quick 6-Minute Increment Reference Chart with Billing Rates

Use this quick reference table to instantly convert common minute values to decimal hours (6-minute increments) with example billing rates for US lawyers ($200/hr) and UK solicitors (£300/hr):

Quick 6-Minute Increment Reference with Billing Rates for USD and GBP
Minutes Worked	Decimal Hours	Bill at $200/hr (USD)	Bill at £300/hr (GBP)
1-6	0.1	$20	£30
7-12	0.2	$40	£60
13-18	0.3	$60	£90
19-24	0.4	$80	£120
25-30	0.5	$100	£150
31-36	0.6	$120	£180
37-42	0.7	$140	£210
43-48	0.8	$160	£240
49-54	0.9	$180	£270
55-60	1.0	$200	£300

Tip: Print this table or bookmark this page for quick access during your workday.

Frequently Asked Questions
- What is a 6-minute increment?
  
  A 6-minute increment is one-tenth (1/10th) of an hour, or 0.1 decimal hours. It's a standard unit for billing used by professionals to efficiently charge for their time.
- Why do professionals use this method?
  
  It balances accuracy and simplicity. It's granular enough to capture value from short tasks, but simple for invoicing since ten units equal exactly one hour.
- How is the calculation performed?
  
  The total minutes are divided by the increment (e.g., 6). The result is always rounded UP to the next whole number to get "billable units," which are then converted to decimal hours.
- Is it legal and ethical to round up time?
  
  Yes, as long as the policy is applied consistently and is clearly communicated to the client in a fee agreement. Transparency is key.
- What are the benefits of 6-minute vs. 15-minute increments?
  
  Billing in 6-minute increments can capture more revenue by accurately billing for small but frequent tasks that would be under-billed in 15-minute blocks.
- Can I use this for other increments?
  
  Yes. The tool's dropdown menu lets you switch between 6, 10, 15, and 30-minute increments to match your billing policy.
- How can I avoid losing billable hours?
  
  The best practice is to log time immediately. Using a tool with a timer and multi-entry mode, like the advanced features on this page, helps ensure no time is forgotten.
- What's the difference between minutes and decimal hours?
  
  Minutes are a measure of actual time (1-60). Decimal hours are a financial representation used for invoicing (e.g., 6 minutes = 0.1 hours).
- Is this tool free to use?
  
  Yes, this tool is completely free. We support the site through affiliate recommendations and on-page advertising.
- Do I need an account to use the advanced features?
  
  No account is needed. The advanced features like the timer and multi-entry mode are available to all users for free.

6-Minute Increment Calculator

Workflow Action Center

6-Minute Tenths Billing Formula

Step-by-Step Calculation Breakdown

Industry Application Context

Real-World Calculation Examples

Common Pitfalls & Warnings

Key Terminology Glossary

Continue Your Workflow Journey

Verified Platform Confidence Layer

Interactive Tool Controls

Actual Time Worked

--

Calculation Breakdown

Billable Time

0.50 hours

Billable Amount

$75.00

Time Entries

Total Minutes: 0

Total Billable Hours: 0.00

Everything About Time to Decimal Conversion

6-Minute Billing Increment Conversion Chart

Converting Employee Time Clock to Decimal Hours

Quick Phone Call

Email Review & Reply

Contract Review

Court Appearance

Quick 6-Minute Increment Reference Chart with Billing Rates

6-Minute Increment Calculator

Workflow Action Center

6-Minute Tenths Billing Formula

Step-by-Step Calculation Breakdown

Industry Application Context

Real-World Calculation Examples

Common Pitfalls & Warnings

Key Terminology Glossary

Continue Your Workflow Journey

Verified Platform Confidence Layer

Actual Time Worked

--

Calculation Breakdown

Billable Time

0.50 hours

Billable Amount

$75.00

listTime Entries

Total Minutes: 0

Total Billable Hours: 0.00

Everything About Time to Decimal Conversion

6-Minute Billing Increment Conversion Chart

Converting Employee Time Clock to Decimal Hours

phone Quick Phone Call

email Email Review & Reply

description Contract Review

gavel Court Appearance

Quick 6-Minute Increment Reference Chart with Billing Rates

Time Entries

Quick Phone Call

Email Review & Reply

Contract Review

Court Appearance