← THE CHARTSPOD LEDGEROPEN TERMINAL →
INDICATORS · FORCE INDEX

Force Index in Crypto: Why the Value Changes Before Candle Close

Force Index multiplies price change by volume. On the live bar, both factors move — and the product can swing widely as a result.

By ChartsPod Editorial Team · Reviewed by ChartsPod Research
Published · Updated · 5 min read

Short answer

Force Index (1) = (close − prior close) × volume, usually smoothed with an EMA (e.g. 13). On the live bar, the price change can flip sign and the volume keeps growing, so the raw value can swing from large positive to large negative. The EMA damps it by α = 2/(N+1), but zero crosses of a short Force Index still occur intrabar. Use closed bars for signals.

Which part of Force Index uses the live bar

ComponentUses current bar?Effect intrabar
Price change vs prior closeYesCan flip sign
VolumeYesGrows
Raw forceYesProduct amplifies
EMA smoothingYesα weight

Because volume keeps rising, late-bar price moves carry more weight in the product than early ones.

Review Force Index in Crypto with bar replay before using it live.

Open ChartsPod replay

How much it moves inside one bar

Force Index during one bar (illustrative)Force Index during one bar (illustrative): OPEN: +$50 × 200 BTC = +10,000; MID: −$120 × 900 = −108,000; LATE: +$30 × 1,400 = +42,000; CLOSE: Final.OPEN+$50 × 200 BTC = +10,000MID−$120 × 900 = −108,000LATE+$30 × 1,400 = +42,000CLOSEFinal
Only Force Index's closing value is kept in history. Original ChartsPod editorial graphic.
Illustrative intrabar range of Force Index vs its closed valueIllustrative intrabar range of Force Index vs its closed value: Raw force mid-bar (k) -108 ; Raw force at close (k) 42 .ILLUSTRATIVE INTRABAR RANGE OF FORCE INDEX VS ITS CLOSED VALUERaw force mid-bar (k)-108Raw force at close (k)42
How far Force Index travels inside a bar versus between bars. Original ChartsPod editorial graphic.

Rules

Force Index signal hygieneForce Index signal hygiene: Signals on closed bars; Bar-close alerts; Backtest uses the same rule; Live value labelled provisional; Settings identical across chart and alerts.FORCE INDEX SIGNAL HYGIENESignals on closed barsBar-close alertsBacktest uses the same ruleLive value labelled provisionalSettings identical across chart and alerts
Closed values are what history shows. Original ChartsPod editorial graphic.

Units are price × volume; compare only within one market.

Put Force Index in Crypto next to price, flow and positioning in one workspace.

Open a ChartsPod workspace

Questions readers ask

What is Force Index?

Price change times volume.

Why does it swing intrabar?

Both factors change.

Closed bars?

Yes.

Sources and methodology

Indicator formulas are standard definitions; live-versus-closed behaviour follows TradingView's repainting documentation. Values in examples are illustrative.

  1. TradingView Pine Script: Repainting — live vs historical calculation.
  2. ChartsPod indicator reference — indicator calculations.

This article explains research tools and workflows. It is not financial advice, does not recommend buying or selling any asset and does not predict prices. Crypto derivatives carry a risk of rapid and total loss of margin.

CHARTSPOD EDITORIAL EDITION · RESEARCH AND EDUCATION ONLY · NOT FINANCIAL ADVICE.