Cable Sizing
Minimum cross-section by ampacity and voltage drop — copper & aluminum, PVC/XLPE insulation.
IEC 60364 · NEC · IEC 60909
Electrical calculations with
industrial precision
From cable sizing to short-circuit analysis, transformer ratings to protective earth — 11 professional calculation modules built for electrical engineers and electricians, right in your pocket.
11
Calculation Modules
IEC
International Standards
Offline
Works Anywhere
Modules
Every job, one toolkit
From field electricians to installation designers — the right calculation engine for every task.
Voltage Drop
Single- and three-phase drop percentage over length, with configurable power factor.
Ohm's Law
Convert between voltage, current, resistance and power — with AC/DC modes.
Lighting Design
Lumen method with room index and utilization factor — calculates required luminaire count.
Conduit Sizing
IEC 61386 metric PVC conduit selection based on cable count and cross-section.
Transformer Sizing
kVA/kW input with primary & secondary currents and short-circuit current output.
Power Factor
cos φ correction — required capacitor kVAr to reach target power factor.
Grounding
Protective earth conductor sizing with TT/TN system check (Ra × Ia ≤ 50V).
Breaker Selection
MCB/MCCB rated current, tripping curve (B/C/D) and breaking capacity recommendation.
Short-Circuit
IEC 60909 — Icc from transformer and line impedance data.
Motor Protection
Full load current, starting current, overload relay and contactor sizing.
Why Ampero
Built for the field
Standards Compliant
Calculations follow IEC 60364, NEC Chapter 9, IEC 60909 and IEC 61386 — no guesswork formulas.
History & Reuse
Every calculation is saved. Tap a history entry to reopen the module with pre-filled inputs.
PDF Reports
Share any result or save as PDF — ready for project files and client documentation.
Works Offline
Fully functional without an internet connection. All engines run on-device.
Bilingual UI
Full English and Turkish support with proper engineering terminology.
Ad-Free Pro
The free tier shows lightweight ads. Upgrade to Pro for an ad-free experience and all modules.
Pricing
Simple and transparent
Four core modules free — unlock the rest with Pro.
Free
$0
Forever
- 4 core modules
- History & PDF export
- Light ads
MOST POPULAR
Pro Yearly
$79.99
per year — $1.66/mo
- All 11 modules
- Ad-free experience
- 7-day free trial
- Priority updates
Pro Monthly
$7.99
per month
- All 11 modules
- Ad-free experience
- Cancel anytime
FAQ
Frequently asked questions
Which standards does Ampero comply with?
Ampero uses IEC 60364 for cable ampacity and installation methods, NEC Chapter 9 for conduit fill reference, IEC 60909 for short-circuit calculations, and IEC 61386 for conduit sizing.
Does Ampero work offline?
Yes. All calculation engines run on-device. You can use Ampero in the field without an internet connection — only ads and App Store updates require network access.
Is Ampero free?
Four core modules (Cable Sizing, Voltage Drop, Ohm's Law, Lighting) are free with light ads. The remaining seven professional modules and an ad-free experience require Ampero Pro.
What platforms are supported?
Ampero is available on iOS today. An Android version is in development.
Can I export results for project documentation?
Yes. Every result can be shared or exported as a PDF report directly from the app. All inputs and computed values are included.
Is there a free trial for Pro?
Yes — Pro Yearly includes a 7-day free trial. You can cancel anytime before the trial ends and you will not be charged.
Start today
Download Ampero from the App Store. Even the free tier handles most field work.