---
title: "Lot Size Calculator – Chrome extension stats, history and permissions"
description: "2,000 users, rated 4.34 by 32 people. Version 3.5.5, updated 2026-04-28. Requests 9 permissions."
url: "https://extensiontracker.com/extension/nfmkfpoaomgnnomijeolbkjffdildobk"
---

# Lot Size Calculator

Live in the Chrome Web Store.

- Users: 2,000
- Rating: 4.34 from 32 ratings
- Last checked: 2026-09-27 06:09 UTC
- Users gained in 7 days: – (needs a week of history)
- Users gained in 30 days: – (needs a month of history)
- Rank by users: #14,553 of 264,703 live extensions
- Rank in Workflow & Planning: #4,349 of 44,474

## The listing

What the Chrome Web Store shows, as of the last check.

Summary from the listing:

> Seamlessly calculate forex lot sizes in TradingView. Automate trading with instant, accurate position sizing for forex pairs.

- Extension ID: `nfmkfpoaomgnnomijeolbkjffdildobk`
- Developer: [Avant Infinity](https://extensiontracker.com/developer/u984713689fd57be7d646b7338df7b45a)
- Category: [Productivity › Workflow & Planning](https://extensiontracker.com/category/productivity/workflow)
- First published: 2022-10-20
- Last updated: 2026-04-28
- Version: `3.5.5`
- Size: 133 KiB
- Minimum Chrome: 88
- Languages (1): English
- Website: `tradeprober.com`
- Support page: `https://www.tradeprober.com/contact`
- Chrome Web Store: <https://chromewebstore.google.com/detail/lot-size-calculator/nfmkfpoaomgnnomijeolbkjffdildobk>
- View the code or download the CRX, in CRX Viewer: <https://robwu.nl/crxviewer/?crx=https%3A%2F%2Fchromewebstore.google.com%2Fdetail%2Fnfmkfpoaomgnnomijeolbkjffdildobk>

## Users over time

One row per check, newest first, as shown on the Chrome Web Store.

| Checked | Users | Rating | Ratings |
| --- | ---: | ---: | ---: |
| 2026-09-27 | 2,000 | 4.34 | 32 |

## What changed

Every change found on a check, newest first.

No changes found since tracking began on 2026-09-27.

## What it can access

From the extension's manifest, in plain language.

### Sites

- `*://*.tradeprober.com/*`: tradeprober.com and its subdomains
- `*://*.tradingview.com/*`: tradingview.com and its subdomains
- `*://api.coingate.com/*`: api.coingate.com
- `*://app.tradeprober.com/*`: app.tradeprober.com
- `*://raw.githubusercontent.com/*`: raw.githubusercontent.com
- `*://v6.exchangerate-api.com/*`: v6.exchangerate-api.com

### Sites where it runs scripts

- `*://*.tradingview.com/*`: tradingview.com and its subdomains

### Browser features

- `activeTab`: The tab you're on, only after you click the extension
- `scripting`: Run scripts on sites it can reach
- `storage`: Save settings and data in your browser

## More from this developer

Other extensions from the same publisher account.

| Extension | Users | Rating | Ratings | Category |
| --- | ---: | ---: | ---: | --- |
| [TradeProber - Trade Logger](https://extensiontracker.com/extension/alkhhggeihooiihhgeeflakjfaknmahb) | 18 | – | – | Workflow & Planning |

All 2 extensions by [Avant Infinity](https://extensiontracker.com/developer/u984713689fd57be7d646b7338df7b45a).

## About this data

Collected from the extension's public Chrome Web Store listing. It's checked every week, because it has 1,000 or more users, and again whenever a new version appears. Last checked 2026-09-27 06:09 UTC; next check around 2026-09-30.

How the data is collected: <https://extensiontracker.com/methodology>.

## Cite this page

Extension Tracker. “Lot Size Calculator” (nfmkfpoaomgnnomijeolbkjffdildobk). Chrome Web Store data, last checked 2026-09-27. https://extensiontracker.com/extension/nfmkfpoaomgnnomijeolbkjffdildobk. Accessed 2026-09-28.

```bibtex
@misc{extensiontracker_nfmkfpoaomgnnomijeolbkjffdildobk,
  title   = {Lot Size Calculator (nfmkfpoaomgnnomijeolbkjffdildobk)},
  author  = {{Extension Tracker}},
  year    = {2026},
  note    = {Chrome Web Store data, last checked 2026-09-27},
  url     = {https://extensiontracker.com/extension/nfmkfpoaomgnnomijeolbkjffdildobk},
  urldate = {2026-09-28}
}
```

---

From Extension Tracker, a public record of the Chrome Web Store: <https://extensiontracker.com/extension/nfmkfpoaomgnnomijeolbkjffdildobk>. It isn't affiliated with Google. The data is free to reuse under CC BY 4.0 (<https://creativecommons.org/licenses/by/4.0/>), crediting Extension Tracker. Extension, developer and list pages come as Markdown too: add `format=md` to the address, as in `https://extensiontracker.com/extension/{id}?format=md`.