Your inputs

Closing prices (oldest first)80 values

Paste a column from a spreadsheet or export.

Lookback (periods)

Results

ROC(12)+4.35%close 109.88 vs 105.3 12 bars ago

ROC = (Close − Close 12 bars ago) ÷ Close 12 bars ago × 100. Crossing above zero signals momentum turning positive; divergence between ROC and price warns that a trend is losing speed.

Price

Rate of change (12)

Last 10 bars

Bar	Close	ROC %
#80	109.88	4.35
#79	109.74	3.32
#78	108.82	2.82
#77	107.55	2.24
#76	108.58	3.5
#75	106.89	2.57
#74	107.98	4.81
#73	108.58	5.42
#72	107.57	3.99
#71	108.12	4.5

Not financial advice. Results are estimates based on the values you enter and simplified assumptions; real trades are affected by fees, slippage, gaps and other factors. Trading involves substantial risk of loss. Read the full disclaimer.

How to calculate rate of change

ROC = (Close − Close n periods ago) ÷ Close n periods ago × 100

Paste prices oldest-first, one value or row per bar — straight from a spreadsheet or CSV export. Use “Sample data” to try it instantly.

Worked example

Close today 110, close 12 bars ago 100 → ROC = (110 − 100) ÷ 100 × 100 = +10%.

How to interpret rate of change

Positive ROC means price is higher than n bars ago; crossing above zero signals momentum turning up. Divergence between ROC and price — price at a new high, ROC lower than at the previous high — warns that the move is losing speed.

Technical Indicators

RSI Calculator

Calculate the Relative Strength Index with Wilder or simple averaging and see overbought/oversold readings.

Avg gain 0.714 / avg loss 0.357 → RSI 66.67

Technical Indicators

MACD Calculator

Calculate the MACD line, signal line and histogram from closing prices.

MACD(12, 26, 9) → line, signal, histogram

Performance & Returns

Daily & Monthly Return Calculator

Turn a series of closing prices or balances into daily, weekly or monthly returns with averages and volatility.

36 month-end balances → avg +1.1% / month

Rate of Change calculator FAQ

Is ROC the same as momentum?

Momentum is often the price difference (Close − Close n ago); ROC expresses the same idea as a percentage, so it's comparable across instruments.

What lookback should I use?

9–14 for short-term trading, 20–25 for swing trading, 125–250 for long-term momentum.