Outer length
Measure the longest packed edge.
00 / MEASUREMENT WORKPAD
Measure every package. See every cubic metre.
Turn outer packed length, width, height and quantity into a transparent multi-row CBM estimate. Different sizes stay on different lines, so the total can be checked.
L × W × H × QTY · browser-side estimate · no tariff or fit promise
LENGTH1.20 m
WIDTH0.80 m
CBM × 31.440
01 / SIX MEASUREMENT MOVES
A result you can trace back to the tape.
Start with the outside of the packed item. Keep identical packages together; give every other size its own row.
Outer width
Keep the tape square to both sides.
Outer height
Include packaging and raised parts.
Unit
Use one unit for all three dimensions in a row.
Quantity
Repeat a row only for truly identical packages.
Review
Check each converted dimension before using the total.
02 / MULTI-PACKAGE LEDGERPlan the rows ↗
Same dimensions share quantity. Different dimensions get a new row.
A quantity multiplier is useful only when every packed unit in that row has the same outer length, width and height.
014 identical cartons× 4
021 tall carton× 1
031 flat parcel× 1
03 / UNIT CALIBRATION
Convert the line first. Cube it only after.
Each length is converted to metres before the three dimensions are multiplied. This prevents a centimetre factor from being applied only once to a cubic result.
mm× 0.001
cm× 0.01
m× 1
in× 0.0254
ft× 0.3048
04 / IRREGULAR CARGO
A rectangular result is a planning boundary—not the object itself.
For an irregular wrapped item, measure the furthest outer points. The result estimates its bounding cuboid; it cannot confirm handling clearance, container fit or acceptance.
CBM alone does not prove geometric fit.05 / CHECKED EXAMPLES
Five units. One metre-based result.
The calculator keeps full internal precision and rounds only what it displays.
06 / ERROR MARGIN
The common misses happen before multiplication.
01 / Inner dimensionsUse the outside of the packed item.
02 / Missed protrusionMeasure to the furthest protected point.
03 / Mixed sizes in one rowSplit different dimensions into separate rows.
04 / False precisionKeep the measurement method visible with the result.
07 / READY TO CALCULATE
Start a worksheet ↗Build a total you can inspect row by row.
Your dimensions stay in this browser session. The floating WhatsApp action is available when you want human help with measurement or calculation—not an automatic quote.