---
title: "Definition of MFI"
url: https://signalscreener.fr/definition/mfi/
markdown_url: https://signalscreener.fr/definition/mfi.md
description: "A volume-weighted RSI that measures buying and selling pressure by combining price and volume."
type: glossary-definition
site: Signal Screener
language: en
keywords:
  - "MFI"
  - "Money Flow Index"
translations:
  de: https://signalscreener.fr/de/definition/mfi.md
  es: https://signalscreener.fr/es/definition/mfi.md
  fr: https://signalscreener.fr/fr/definition/mfi.md
  it: https://signalscreener.fr/it/definition/mfi.md
  pt: https://signalscreener.fr/pt/definition/mfi.md
---

# Money Flow Index

## What is MFI?

A volume-weighted RSI that measures buying and selling pressure by combining price and volume.

## Think of it like this

Like RSI but accounting for how much money is actually flowing in or out, not just price direction.

## Formula

```
MFI = 100 - (100 ÷ (1 + Money Flow Ratio))
```

- **Positive Money Flow**: Sum of volume on up days × typical price
- **Negative Money Flow**: Sum of volume on down days × typical price

## Why it matters

- Combines price and volume for stronger signals
- Identifies overbought/oversold with volume confirmation
- Divergences are more reliable than RSI
- Shows actual money flowing in/out

## What's a good value?

| Range | Rating | What it means |
|---|---|---|
| > 80 | Overbought | Heavy buying pressure, potential pullback |
| 50-80 | Bullish | Positive money flow |
| 20-50 | Bearish | Negative money flow |
| < 20 | Oversold | Heavy selling pressure, potential bounce |

## Real-world example

MFI at 15 with price making new lows could signal a volume-confirmed oversold bounce opportunity.

---

This is educational content, not financial advice.

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