175 ft
Electrical Calculator
Enter your branch-circuit run lengths and box/device counts to get slack-adjusted wire footage and totals you can hand straight to a material order.
Material ListBase wire footage Wire footage with slack Boxes Outlets
Electrical estimating on this page covers what CrewMeasure calls Tier 1: wire footage by run, with a visible, editable slack allowance, and simple user-entered box and outlet tallies. It is the same Electrical calculator available on its own page, just presented with the informational context below.
How to measure wire runs for a takeoff
Measure each branch-circuit run from the panel (or the last device in the run) to its destination along the actual routed path, not a straight line — through studs, up walls, and across ceilings the way the wire will actually be pulled. Enter each run separately rather than a single combined total, since runs of different lengths often use different wire gauges or circuit types.
The slack allowance covers box drops, splices, device pigtails, and service loops that a straight-line measurement misses. CrewMeasure starts at 10%, but tighter or looser field conditions can call for a different number — the assumption is always shown and editable, never silently baked in.
Wire runs, boxes, and outlets
Enter each branch-circuit run length and your box/device counts. Wire footage and totals update as you type, with no Calculate button.
Electrical
Tier 1 wire footage with slack, plus box and outlet tallies.
You'll need 192.5 ft of wire and 0 boxes for this job.
You'll need
Electrical result
193 ft
0 count
0 count
Warnings
- INFO Advanced code table lookup is not available until reference data is verified.
- INFO This is a general reference only. Verify local requirements and field conditions before installation.
Detail values
- Base wire footage
- 175 ft
- Slack-adjusted wire footage
- 192.5 ft
- Total boxes
- 0
- Total outlets
- 0
Assumptions
- Slack allowance: 10% (editable)
- Tier 2 conduit-fill data: Not available until NEC Chapter 9 Tables 4 and 5 are verified
Formula details
- Wire footage: sum(runLengths) * (1 + slackAllowancePercent / 100)
- Conduit fill (when verified data is available): totalWireArea / conduitInternalArea * 100
What Tier 1 covers, and why conduit fill isn't here
This page runs CrewMeasure’s Electrical Tier 1 tools: wire footage with slack, and box/outlet tallies you enter directly (they are not inferred from run lengths). Tier 2 conduit fill — sizing conduit trade size against conductor fill limits — is intentionally not calculated in this release. That calculation depends on NEC Chapter 9 Table 4 (conduit internal area) and Table 5 (conductor area) data that has not yet been independently verified from the primary NEC source and added to CrewMeasure’s reference dataset.
Rather than estimate conduit fill from unverified numbers, CrewMeasure shows conduit fill as a visibly disabled, gated section until that verified dataset is in place. This page does the same — it does not claim a conduit fill capability the app does not have.
FAQ
Why is there only one calculator on this page?
Electrical's Tier 1 takeoff (wire footage, boxes, outlets) doesn't have a natural second calculator to chain it to in this release, unlike Roofing's rafters-to-shingles-to-sheathing flow. This page still gives Electrical the same informational, SEO-focused treatment as the multi-calculator trades.
Why is conduit fill unavailable?
Advanced code table lookup is not available until reference data is verified.
Why is the slack allowance editable?
CrewMeasure starts at 10%, but job conditions such as box drops, splices, and service loops can require a different allowance.
Are box and outlet counts calculated from the wire runs?
No. Boxes, device boxes, receptacles, and switches are simple counts you enter directly; they are not inferred from run lengths or circuit design.
Disclaimer
This is a general reference and material-estimate tool only. Verify local requirements, equipment specifications, and field conditions before installation.