| What it does | Offline calculators for electricians, builders and HVAC technicians
| Free calculators for professionals across multiple industries
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| Founded | Not given
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| Based in | US
| US
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| Pricing model | Freemium
| Free
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| Pricing | Free: nine calculators (voltage drop, Ohm's law, watts to amps, concrete slab, roof pitch, board feet, BTU, CFM, BTU to kW), no time limit. Pro: $9.99 per year or $19.99 lifetime (one payment, no renewal).
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| Key features | - Wire sizing and voltage drop calculations
- Conduit fill and box fill calculations
- Offline operation with no network required
- Transparent calculation steps and NEC warnings
- Job organization and PDF/CSV export
- Motor and generator sizing calculators
- Power and conversion calculators
- Building calculations for concrete and roof pitch
- No ads and no account required
- Private with data staying on device
| - Agency retainer profitability calculator
- Freelance hourly rate calculator
- Restaurant food cost and menu price calculator
- Photography session price calculator
- Real estate commission split calculator
- Online coach client capacity calculator
- Personal trainer package calculator
- DJI drone LUT finder
- Raised bed soil calculator
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| What makes it different | - Works completely offline with no network or cellular signal required
- Private by design with no account, no ads, and calculations never leaving your device
- Shows exact NEC formulas and calculation steps so you can verify results before fieldwork
- Over 35 specialized calculators covering electrical, building and HVAC trades
- Tested code with automated tests against independently worked examples
| - Completely free with no sign-up or data storage required
- Works directly in browser without installation or account
- Wide range of specialized calculators for multiple professions
- Built by a product research team
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | Not checked yet ● no change since last check | 2 ▲ +1 (up) since last check |
| Trust Flow (Majestic) | 0 | 0 |
| Citation Flow (Majestic) | 13 | 0 |
| Referring domains (Majestic) | 1 | 0 |