Software for electricians · offline · no sign-up
Electrical cable calculator and quotes — on your device
CableFlow helps installers measure conduit runs, calculate cable metres per circuit, manage a catalog, and build electrical installation quotes with clear margin and markup. It works offline; no account required.
What it does
Full flow: measure → calculate → catalog → quote → print.
- Measure — log cable runs (one conduit per row) with distance and conductor specs.
- Calculate — metres by section × conductor, with automatic section from circuit type (I/T/P/S/Q/G).
- Catalog — materials and suppliers with purchase and sale prices.
- Quote — create from the project (aggregated totals) or manually; add labour and VAT.
- Print — professional client layout without internal costs.
How it works in 4 steps
- Create a project and add runs (zone, type, distance, spec such as
FTNor2VJTN). - Read the live summary: cable metres per circuit and totals by section × conductor.
- Generate a quote from the project and map each total to a catalog material.
- Tune margin or markup, print for the client, and export JSON as backup.
Real features
- Spec parser for
FTN,F2R,2VJTN,4VJ,3F2N,FRTN,C. - Automatic section by type I / T / P / S / Q / G (1.5 to 16 mm²).
- Summary by section × conductor; traveller VJ metres use factor ×2.
- Quote from project with aggregated import (not per room/circuit label).
- Separate purchase cost and sale price; margin and markup calculations.
- Client print view without internal costs; internal profitability view.
- English / Portuguese UI; light / dark mode.
- Offline-first; optional sync with a secret code; JSON export.
Privacy
No accounts. Data stays on your device. Optional cloud sync uses a secret UUID — anyone with the code can open the space; there is no public directory of codes. Export JSON as an independent backup.
Guides and free tool
- Cable metres per circuit — sections, specs, and VJ factor.
- Margin vs markup — the €100 → €125 example.
- Quote from a cable list.
- Margin/markup calculator — no login, nothing stored.
Frequently asked questions
Does CableFlow require an account?
No. There is no login or email. Data stays on your device (localStorage). Optional cloud sync uses a secret UUID workspace code.
Does it work offline?
Yes. The app runs in the browser and stores projects, materials, and quotes locally. If the network drops, you keep working; optional sync resumes when you are back online.
How are cable metres calculated?
For each conduit run you set distance and a conductor spec (e.g. FTN, 2VJTN). Metres per conductor are quantity × distance × factor. Traveller VJ always uses ×2; other codes use ×1.
What do circuit types I, T, P, S, Q, and G mean?
They map automatically to cable sections: I 1.5 mm², T 2.5 mm², P 4 mm², S 6 mm², Q 10 mm², G 16 mm². You do not pick section manually in the cable view.
What is the difference between margin and markup?
Margin is profit over sale price; markup is profit over cost. With cost €100, 20% margin → €125 sale; 25% markup → €125 sale — the same percentage is not the same method.
Does the print view show internal costs?
No. The client-facing print layout omits internal costs, margin, and markup. Those stay in the internal profitability view.
How do I open the same workspace on another device?
When sync is configured, Settings shows your workspace UUID. On another device: Settings → Open another workspace and paste the code. Treat it like a password.
Can I export a backup?
Yes. Settings lets you export/import full JSON (projects, materials, suppliers, quotes). It remains an independent backup besides optional sync.