How to Do a Takeoff From a PDF, Step by Step

To do a takeoff from a PDF, set the scale on each page, measure every item as a length, an area or a count, group the measurements by trade, and export the totals to a spreadsheet. Takeoff software does the arithmetic, but the quantities are only as good as the scale and the care taken while measuring. This guide walks through each step, with the labels in Notch.

A takeoff is the process of counting items or measuring materials from drawings to find the quantities a job needs. The Access Group's construction takeoff guide (posted June 2025) breaks it into five steps: review the plans, list the materials, measure the components, calculate the quantities and create a takeoff sheet. Measuring from a PDF changes how you do the third and fourth steps, and this guide covers those in detail.

What do you need before you start a PDF takeoff?

You need the bid set as PDFs, a way to measure on them and a list of what you are taking off. The software can be a dedicated takeoff package or a PDF editor with measurement tools. The PDFs should be the vector or high-resolution exports, not photos, because you will click on corners and line work.

Before you measure anything:

1. Read the drawing index and open the sheets that carry your scope: plans, sections, schedules and details.
2. Read the general notes and the specifications for your trade. Notes often change a quantity, such as "provide moisture-resistant board in all wet areas".
3. Write down the items you will take off and how each is measured: by length, by area or by count.
4. Check the scale printed on each sheet you will measure from, and note any sheet marked "not to scale".

How do you set the scale on a PDF drawing?

Set the scale on every page you measure, by picking the scale printed in the title block or by calibrating from a known dimension. A PDF stores page geometry, not the ratio between the page and the building, so lengths and areas are meaningless until the page is scaled. Calibrating from a printed dimension is the more reliable method.

In Notch:

1. Open the PDF and go to the first page you will measure.
2. Click Set scale in the status strip.
3. Pick a preset under Architectural, Engineering or Metric, or choose Calibrate by drawing a line…, click the two ends of a dimension with a known length and type that length.
4. Repeat on every page that has its own scale. Calibration is per page, so plans and enlarged details at different scales work in the same document.

Notch can fill in the scale for you. A PDF badge on the scale means it came from the file's own page scale, and an AI badge means Notch read it from the title block. Confirm either against a known dimension before you rely on quantities.

The full procedure, with a check step and the common mistakes, is in How to Scale a PDF Drawing for Accurate Takeoffs. Do not skip it: every number below depends on it. Bluebeam Revu 21 also scales per page, and its Set page scales documentation (checked October 2026) lets you apply one scale to all pages, the current page or selected pages in a single step. Revu has no Mac version, so Mac users can read Bluebeam for Mac: 3 ways to work on a Mac before choosing tools.

Which measurement type fits each item?

Every takeoff item is measured one of three ways: length for things that run, area for things that cover and count for things you tally. Choosing the type first keeps the quantities in the unit the supplier or subcontractor prices in.

Diameter and angle tools also exist for round items and for angled runs, but most takeoffs use the four above.

How do you measure lengths, areas and counts in Notch?

Open the Measurements flyout on the tool rail, pick the tool for the item and click on the page. Snapping pulls the cursor onto the drawing's line work as you click (switch it on under Snap in the status strip), so your points land on the geometry. Hold Ctrl (⌘ on Mac) to place a point without snapping. The label on the measurement updates as you go.

Measure a length

1. Choose Linear from the Measurements flyout, or press M.
2. Click the start point, then click each corner along the run. Two clicks give a single length.
3. Close the loop back to the start if you want the perimeter.
4. Finish the measurement. The length shows on the page in the calibrated unit.

Measure an area

1. Choose Area and click the corners of the region. The area shades in and shows its quantity.
2. For an opening inside the region, such as a shaft or a stairwell, choose Cutout and click its corners. The net quantity updates.

Count items

1. Choose Count and click once per item.
2. Name the count group, for example by device type, and set its symbol and color in Properties.

A count group spans every page. Marks on page 3 add to the same tally as marks on page 1, and the status strip shows the running total while you count, so you do not keep a separate tally by hand.

Worked example: drywall

Drywall shows all three measure types in one trade. The figures below are placeholders to show the arithmetic, not typical values for a real project.

1. Length of partitions. Trace each partition with Linear, one measurement per partition type if the types differ in height or layers. The total length is the base for wall board.
2. Wall area. Wall board area is the partition length times the partition height, times two if both faces get board. For a 100 ft run of partitions with 10 ft of height and board on both faces, that is 100 x 10 x 2 = 2,000 sq ft. Take the height from the wall-type schedule or the sections, not from memory.
3. Ceiling area. Measure each ceiling with Area and subtract openings with Cutout.
4. Count of accessories. Count access panels, corner beads or control joints by group if your scope includes them.
5. Waste and board size. Apply your own waste factor and divide by the board size at the estimating stage. Those depend on your supplier and your crew, so they belong in your estimate and not in the measurement.

Notch measures the length and the area. The multiplication by height happens in the spreadsheet after you export. The full drywall method, with openings, sheet counts and finish levels, is in Drywall Takeoff From a PDF. If you want the height recorded with each measurement, add a Number custom column on the worksheet and fill it in there.

How do you organize a takeoff by trade?

Put each trade's measurements on its own layer, give each measurement a clear name and assign a cost code, then group the takeoff panel by layer or cost code to get subtotals per trade. This is the difference between a pile of measurements and a takeoff someone else can check.

1. Open the Measurements panel in the right sidebar. It lists every measurement on the document in one list with live totals.
2. Click New take-off to arm a measure tool with Properties open, so you can name it before the first click. You can also add a New layer for it.
3. In Properties, set the cost code and division on each measurement.
4. Open Group & sort to group by layer, name, type, page or cost code. Grouping levels stack, so "cost code, then page" gives nested subtotals.
5. Set the precision in the same menu: decimal places, inch fractions or whole inches.

If you measure the same kind of item many times, use Save as tool… on a styled measurement. The saved tool keeps its cost code, division and display unit, so the next take-off starts filled in.

To put the results on the page, use the Legend tool in the Text flyout. It draws a key with the color, name and total of each measurement, and it exports with the document, so a subcontractor or project manager can read the quantities without opening the takeoff panel.

How do you export quantities from a PDF takeoff?

Export the totals as a CSV file and open it in Excel or your estimating software. In Notch, the Measurements panel has Export CSV, and the worksheet exports the table exactly as you have set it up, with the columns, filters, grouping and order you see. Check the exported totals against the panel before you price anything.

The worksheet is a table of every markup and measurement, with columns for page, layer, value, unit, cost code and division. Open it from Worksheet in the status strip or with Ctrl+Shift+L (⌘⇧L on Mac). You can filter to one layer, group by cost code and add custom columns for your own fields, such as a room number or supplier. See the worksheet and measurements and calibration docs for every option.

Measurement tools and exporting rows that include measurements are part of the Solo and Pro plans, and the 14-day free trial covers them. See pricing for current plans.

How do you check a PDF takeoff before you use it?

Check the scale, the coverage and the totals before the quantities go into a bid. Most takeoff errors are one of three things: a page measured at the wrong scale, an area or run that was missed, and the same item counted twice.

• [ ] Every measured page shows a scale, and you checked it against a second printed dimension.
• [ ] Each sheet in your scope has measurements, or you have a note on why it does not.
• [ ] Count groups have one symbol per item type, so a visual scan of the page shows what is still unmarked.
• [ ] Totals by layer or cost code match what you expect from the drawings, such as a floor area close to the gross area on the plan.
• [ ] Notes, specifications and addenda are reflected in the items you took off.
• [ ] The exported file matches the panel totals.

When a revised set arrives, compare the new pages with the previous issue to find what changed, then update only the affected measurements. Notch notes that measurements are estimating aids that depend on calibration, and that the contract documents always govern.

Frequently asked questions

What is a takeoff in construction?

A construction takeoff is the process of counting items or measuring materials from the drawings to find the quantities a project needs. The quantities feed the estimate, where you add pricing, labor, equipment and overhead. Estimators usually do it, though in small firms an owner or project manager may.

Can you measure directly from a PDF drawing?

Yes, as long as the software knows the page scale. Set the scale from the title block or a known dimension, then measure lengths, areas and counts on the page. The result is in real units. Without a scale, a PDF gives only distances on the page.

Is a digital takeoff more accurate than a paper one?

It removes manual scaling and arithmetic, and it keeps every measurement visible so someone can check it. It does not remove errors in the scale, missed items or misread drawings. Accuracy still depends on calibrating each page and checking the totals.

Do I need dedicated takeoff software to measure from PDFs?

Not always. A PDF editor with calibrated measurement tools can handle lengths, areas and counts, which covers many trade takeoffs. Dedicated estimating packages add assemblies, pricing databases and automated quantity-to-cost workflows. Choose by what your estimate needs after the quantities.

Next steps

Start with one trade on one set: scale the pages, take off the items and export the totals. Takeoff in Notch covers the measure tools, count groups and the takeoff panel in one place, and you can try them with the 14-day trial on a real bid set.