Watts Amps Volts Calculator

AC and DC electrical calculators, also supports 1-phase, 3-phase & power factor.

Pro Certs Software Ltd · com.procerts.wattsampsvolts

Not rated yet 100K+ downloads v3.9.8 5.2 MB Android 7.0+ PEGI 3 · Everyone

Download APK 5.2 MB All versions

Signature matches the Google Play version Details

Watch the Watts Amps Volts Calculator trailer on YouTube

Watts Amps Volts Calculator screenshot 1

Watts Amps Volts Calculator screenshot 2

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Watts Amps Volts Calculator screenshot 5

Watts Amps Volts Calculator screenshot 6

At a glance

Latest version: v3.9.8 (30908)
Updated: Sep 8, 2026 (1 month ago)
APK size: 5.2 MB
Requires: Android 7.0+ (API 24)
CPU support: Any (no native code)
Category: Productivity (app)
Listed since: Jul 11, 2021 (at least)
Permissions: 10
Website: procertssoftware.com
Developer contact: [email protected]

About this APK

Watts Amps Volts Calculator is an app by Pro Certs Software Ltd in the Productivity category, listed since at least July 2021. It has no native code, so it runs on any Android processor.

Since version 3.9.4, the APK grew from 3.9 MB to 5.2 MB and the minimum Android version rose from 4.4 to 7.0. It asks for 10 permissions, none of them sensitive. Compared with version 3.9.7, it adds 1 new permission (“Google Play install referrer”) and drops 4 (“Show notifications”, “Read app badge”, “Modify shared storage” and “Receive push notifications”). The app can read the advertising ID that ad and analytics services use.

What's new in v3.9.8

24/07/2025 v3.9.7 - Android 35 update. - UI optimisations and improvements.

Description

From the listing uploaded by “appupdater”.

The Watts Amps Volts Calculator is the essential electrical power tool for electricians, engineers, students, and DIY enthusiasts. Quickly convert and calculate Watts, Amps, Volts, kW, and Power Factor — no more manual formula lookups. Supports AC Single-Phase, AC Three-Phase, and DC electrical calculations. Easy to use electrical power calculator for converting and calculating to and from Watts, Amps, Volts, kW or Power Factor (PF) AC and DC. Electrical calculations include AC 1-phase (single-phase), AC 3-phase (three-phase) and DC electrical calculations. AC Single-Phase Calculations: ✓ Calculate Watts. ✓ Calculate Amps. ✓ Calculate Volts. AC Three-Phase Calculations: ✓ Calculate kW. ✓ Calculate Amps. ✓ Calculate Volts. ✓ Power Factor (PF). DC Calculations: ✓ Calculate Watts. ✓ Calculate Amps. ✓ Calculate Volts. Electrical units are measured in the following: Current (I) = Amps. Power (P) = Watts (or kW). Volts (V) = Voltage. Simple, fast, and accurate — the electrical calculator you'll reach for every day. The trusted professionals choice since 2011.

Version history

4 versions are listed, going back to v3.9.4. Since v3.9.7 it requires Android 7.0+.

v3.9.8 LATEST Sep 8, 2026 5.2 MB TRUSTED v3.9.7 Nov 15, 2025 6.6 MB TRUSTED v3.9.6 Sep 24, 2024 6.4 MB TRUSTED v3.9.4 Jun 25, 2022 3.9 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Sep 8, 2026.
Certificate issued to “Pro Certs Software Ltd” This is the certificate of the Google Play version.
Same certificate as the 3 other versions checked

Store checks and file details

Developer signature verified Sep 8, 2026
Validated against Google Play Sep 8, 2026
Signed byCN=Gary Lince, O=Pro Certs Software Ltd, C=GB
Signing certificate (SHA-1)AD:9B:FE:0C:E9:2E:0A:37:F1:C7:E1:66:CD:74:0F:85:CC:3C:B5:FD
File MD522d1e1b960c65827e675066384da1766
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (3 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (10)

Watts Amps Volts Calculator requests 10 permissions, none of them sensitive.

Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Internal broadcast protection (app-defined) com.procerts.wattsampsvolts.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Prevent the device from sleeping android.permission.WAKE_LOCK
Run foreground services android.permission.FOREGROUND_SERVICE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

Watts Amps Volts Calculator APK: questions and answers

Is there a version of Watts Amps Volts Calculator for older Android phones?

The current version needs Android 7.0 or later. Version 3.9.6 is the newest listed build that installs on Android 6.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 3.9.6 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Watts Amps Volts Calculator APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 3 other versions checked. After downloading, check that the file's MD5 is 22d1e1b960c65827e675066384da1766.