Country, language & terminologyUnited Kingdom · English · RAMS/COSHH
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Electrical Cable Length Calculator.
Estimate cable length from measured runs, cable count and waste allowance. Free online tool for UK construction and trade teams.
Connected to Zektrx
Use this result as a planning estimate, then create controlled Zektrx records for tasks, templates, evidence, actions, pricing and delivery.
Instant Results
Cable length
132.0m
Estimated cable length including waste.
Net cable length
120.0m
Cable length before waste allowance.
Explanation
What this calculates
Use this for early cable ordering checks, then verify against drawings, containment routes, voltage drop checks and installation design.
Formula
Cable length = measured run x repeated runs x (1 + waste %)
Inputs are validated on screen and converted where unit options are available.
Worked Example
Example result
A 120 m measured run with one cable route and 10% waste gives 132 m of cable.
Learn, use, then automate.
1. Learn
Job-linked materials evidence for contractors
How contractors can link materials evidence to jobs, including purchase orders, delivery notes, photos, stock records and completion packs.
RAMS for Electrical Contractors: Common Controls to Review
A RAMS guide for electrical contractors covering scope, isolation, access, permits, competence and evidence checks.
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2. Use
Material Quantity Calculator
Estimate material quantity from area, usage rate and waste allowance. Free online tool for UK construction and trade teams.
Block Calculator
Estimate block quantity from wall area, blocks per square metre and waste. Free online tool for UK construction and trade teams.
Brick Calculator
Estimate brick quantity from wall area, bricks per square metre and waste. Free online tool for UK construction and trade teams.
3. Automate
Electrical Contractor Software
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O&M Manual Software
Build operation and maintenance manual packs with connected evidence.
Construction Document Control Software
Control drawings, revisions, approvals and handover evidence.
4. Start
Start a Zektrx workflow.
Connect resources, calculators, templates, evidence and software modules around the way your contractor team works with the £5 trial.
Start £5 TrialConnected calculators, templates and workflows.
Related Guides
Keep learning
Job-linked materials evidence for contractors
How contractors can link materials evidence to jobs, including purchase orders, delivery notes, photos, stock records and completion packs.
RAMS for Electrical Contractors: Common Controls to Review
A RAMS guide for electrical contractors covering scope, isolation, access, permits, competence and evidence checks.
Contractor job planning checklist
A practical job planning checklist for contractors covering scope, people, RAMS, materials, documents, access and completion evidence.
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Run the numbers
Material Quantity Calculator
Estimate material quantity from area, usage rate and waste allowance. Free online tool for UK construction and trade teams.
Block Calculator
Estimate block quantity from wall area, blocks per square metre and waste. Free online tool for UK construction and trade teams.
Brick Calculator
Estimate brick quantity from wall area, bricks per square metre and waste. Free online tool for UK construction and trade teams.
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Document the work
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Automate the workflow
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O&M Manual Software
Build operation and maintenance manual packs with connected evidence.
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Related FAQs
Can this calculate any material?
Yes for simple area-based rates such as tiles, boards, membranes or rolls.
From Material Quantity Calculator
Should I round to pack sizes?
Yes. Round final ordering quantities to supplier packs, pallets or roll sizes.
From Material Quantity Calculator
Does this include mortar?
No. Estimate mortar separately using supplier rates or your estimator's norms.
From Block Calculator
Should I include waste?
Yes. Cutting, breakage and site handling usually need an allowance.
From Block Calculator
Calculator questions.
Does this size the cable?
No. It estimates length only. Cable sizing and protection must be designed by a competent electrical person.
Can I use it for multiple circuits?
Yes, if the repeated-runs input reflects the number of equivalent cable runs being ordered.
Next Step
Start a Zektrx workflow.
Connect resources, calculators, templates, evidence and software modules around the way your contractor team works with the £5 trial.