RENKO BLOCK SIZE CALCULATOR

Renko Block Size Calculator (Vol-Adjusted) — Excel

Stop guessing Renko blocks. Enter annual volatility, current price, and pick a volatility bucket—the tool outputs five precision block sizes from Very Fast → Very Slow, calibrated for Futures, FX, and Indices.

What it does

• Converts annual vol + price into 5 Renko block sizes (Very Fast / Fast / Medium / Slow / Very Slow).
• FX-friendly: outputs to 4 decimal places (round to your market tick: e.g., CL 0.01, ES 0.25, etc.).
• Uses a calibrated divisor matrix mapped to volatility buckets for consistent sizing across markets.
• Locked front panel: customers only edit BL8 (vol), BL9 (price), BL11 (bucket).
• Legacy-safe Excel formulas (INDEX/MATCH) — no add-ins, no XLOOKUP, no spill arrays.

How it works (3 steps)

1. BL8: Enter annual volatility (e.g., 20% or 0.20).
2. BL9: Enter current price.
3. BL11: Choose the volatility bucket from the dropdown.
4. → Read the five suggested block sizes in BL15:BP15 and round to your market tick.

What’s included

• Excel workbook (.xlsx) — Renko Block Size Calculator (standalone edition).
• User Guide — how to use, how to pick a speed, and rounding guidance.

Requirements

• Microsoft Excel 2007 or later (Windows/Mac).
• Works in Google Sheets for calculation; note that protection/locking behaves differently.

Who it’s for

• Futures, FX, and index traders who want a repeatable, volatility-aware Renko sizing method—fast to use, consistent across markets.

License & refunds

• Single-user license. Not for redistribution or resale. Educational use only; not financial advice.
• All sales are final (digital download), we’ll refund only as required by law.

FAQ (add below if you have space)

Does it work on Mac? Yes—Excel 2007+.

What if my dropdown in BL11 is blank? Ensure the VolBuckets named range exists (covered in the User Guide).

Does it choose the “best” speed for me? It provides five calibrated options; pick based on your timeframe and then round to the market tick.