# Watco Charts

> Calculates tank capacity and generates PDF charts based on fill depth. (iPhone/iPad app by Watco Tanks.)

- Source: https://appshunter.io/ios/app/watco-charts/id6443735172 (this page in markdown: same URL + `.md`)
- Developer: [Watco Tanks](https://appshunter.io/developer/1648885655)
- Category: Business
- Price: Free
- Rating: 5.00/5 from 3 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.2 · 1 MB
- Languages: American English
- Released: 2022-10-08
- Data updated: 2026-06-01
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/watco-charts/id6443735172/reviews.md

## What is Watco Charts?

Watco Charts is a free to use application to gauge the gallons of a tank at any given capacity level, either using the measured fill depth to view the current gallons in the user interface, or by exporting a capacity level chart via PDF to be kept on record. With a simple user interface, powered by Watco Tanks’ engineering calculations, this application ensures the most accurate level gauge for any tank manufactured by Watco.
 
Directions for use:
1. Choose the tank type (Aboveground/Underground/Vertical)
2. Enter the tank’s nominal gallons
3. Enter the tank’s nominal diameter
4. Choose between the two functions:
  a. Generate PDF - Click the “Generate PDF” button to generate a printable or email friendly capacity chart.
  b. View Current Capacity - Enter the current measured depth to gauge the current gallons.
 
Watco Tanks hopes this tool can be utilized in your business, and we want to thank you for being part of the Watco Family.

It's the WATCO WAY!

## Key features

- Gauge current gallons by fill depth
- Generate printable capacity charts
- Export charts as PDF
- Supports aboveground, underground, and vertical tanks
- Accurate engineering calculations
- Simple user interface

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/watco-charts/id6443735172/reviews.md

### 5/5 — Simple, Fast, Effective

*2024-08-01*

In a world of over-complicated apps it’s nice to see a utility you can download and immediately use with no tutorial or account registration.

## Frequently asked questions about Watco Charts

### What is Watco Charts used for?

Watco Charts is used to accurately gauge the gallons of a tank at any given capacity level. You can either view the current gallons based on measured fill depth or export a capacity level chart as a PDF for records.

### How do I use Watco Charts?

To use Watco Charts, first choose your tank type (Aboveground, Underground, or Vertical). Then, enter the tank's nominal gallons and diameter. Finally, you can either generate a PDF chart or enter the current measured depth to view current gallons.

### Can I export tank capacity data from Watco Charts?

Yes, Watco Charts allows you to generate a printable or email-friendly capacity chart and export it as a PDF. This is useful for keeping records or sharing information.

### What types of tanks does Watco Charts support?

Watco Charts supports three main tank types: Aboveground, Underground, and Vertical tanks. This ensures broad applicability for various tank configurations.

### Is Watco Charts accurate?

Yes, the application is powered by Watco Tanks’ engineering calculations, ensuring the most accurate level gauge for any tank manufactured by Watco.

### What devices can I use Watco Charts on?

Watco Charts is available for iPhone, iPad, and iPod devices. It is designed for mobile use on Apple's iOS platform.

### How often is Watco Charts updated?

The latest version of Watco Charts is 4.0, and it was last updated on October 30, 2025. This indicates recent development and potential for ongoing improvements.

### What is the age rating for Watco Charts?

Watco Charts has an age rating of 4+. This suggests it is suitable for a wide audience, including younger users, with no mature content.

## Version history (last 4 releases)

### 4.0 — 2025-10-30

improved performance on capacity lookup

### 3.0 — 2025-10-28

Updated API endpoint. No front-end changes

### 2.0 - Increment Dropdown — 2024-10-24

Dropdown for the increments

### 1.0 — 2022-10-08

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-01.*