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Document Review Time Calculator

Convert review minutes into billable units under your rounding rule, and see what a review session is actually worth.

Last reviewed

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Free · No sign-up · Runs in your browser

Document review is the work most exposed to increment arithmetic, because it is done in short bursts across many documents. A reviewer who logs each document separately at a six-minute minimum produces a very different total from one who logs a continuous block.

This calculator converts review minutes into billable units under the rule your engagement letter specifies, and shows the difference between minutes worked and minutes billed.

Your numbers

Results update as you type. Nothing is sent anywhere.

Result

Billable units

8

Value at your rate

$260.00

Billed hours
0.8
Minutes worked
47
Minutes billed
48
Rounding difference
1
Value per unit
$32.50
Units per hour
10

This tool performs arithmetic on the values you enter. It does not provide legal advice and does not create an attorney-client relationship.

Six-minute increments (tenths of an hour) are the most common billing unit, but the agreed increment belongs in the engagement letter.

Rounding every short task up adds real money across a year - and it is also the thing clients audit most closely. Use the rule your engagement letter states.

How to use the document review time calculator

  1. Enter the minutes actually spent on the review session.
  2. Enter your billing increment - six minutes is the usual default.
  3. Choose the rounding rule from your engagement letter.
  4. Read the units, the billed hours and the rounding difference.

What people use this for

  • Converting a review timer into an invoice line.
  • Comparing what different increments do to the same work.
  • Explaining a review entry to a client who has queried it.
  • Deciding whether to log documents individually or as a block.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

A 47-minute review block

Forty-seven minutes at six-minute increments, rounded up, at $325 an hour.

Billable units
8
Value at your rate
$260.00
Billed hours
0.8

The same time in fifteen-minute increments

Identical work under a fifteen-minute increment, which rounds far more aggressively.

Billable units
4
Value at your rate
$325.00
Rounding difference
13

Why review is the exposed task

Most legal work happens in blocks long enough that the increment is a rounding detail. Review does not - it is a sequence of short tasks, and if each is logged separately the minimum unit applies to each of them.

Forty documents at three minutes each is two hours of work. Logged individually at a six-minute minimum it is four hours of billing. Neither figure is dishonest; they are the consequence of two different logging conventions, and the client is entitled to know which one is being used.

Block logging is usually the defensible choice

Recording a continuous review session as a single block, with the number of documents noted in the narrative, produces a total that matches the time and a narrative the client can understand.

It is also easier to defend in a fee audit, because the arithmetic reconciles to the clock rather than to a convention. Where per-document logging is genuinely required, say so in the engagement letter.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

  • Units = minutes ÷ increment, rounded up, down or to nearest according to the rule chosen.
  • Billed hours are units × increment ÷ 60. The rounding difference is billed minutes minus minutes worked.
  • The tool performs arithmetic or date counting on the values you enter. It does not interpret a rule, a statute or a contract.
  • Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This website provides general informational and productivity tools and does not provide legal advice or create an attorney-client relationship.

The date and deadline tools count days exactly as you instruct them. They do not interpret court rules, statutes of limitation, filing requirements or any other legal authority, and they do not know the rules of your jurisdiction.

Always verify any date, fee, or calculation against the governing rule, the court calendar and your own professional judgement. If you need legal advice, consult a lawyer licensed in your jurisdiction.

Frequently asked questions

Should each document be a separate time entry?

That is a policy and engagement-letter question. Block logging with the document count in the narrative is common and generally easier to defend.

What increment is standard for review?

The same as the rest of the matter - usually six minutes. Using a different increment for review specifically would need to be disclosed.

Does contract review software change this?

It changes how long the work takes, not how the time is billed. The increment arithmetic is unaffected.

Is rounding up acceptable?

It is a common convention and should be stated in the engagement letter. Undisclosed rounding is what causes disputes.

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