Lean Manufacturing & Operations calculator
Heijunka Leveling Pitch Calculator
Heijunka pitch is the fixed time interval at which a leveled production schedule releases a small batch of work (typically one pitch box slot) to the floor. It is the heartbeat of a leveling board: production planners and lean coordinators use it to break a shift into equal management increments so withdrawal kanban, water-spider runs, and andon checks all sync to the same rhythm. A well-set pitch turns a chaotic schedule into a steady, auditable cadence where you can spot a fall-behind within one increment instead of at end of shift. It matters because leveling without a pitch is just a wish — the pitch is what makes takt visible and controllable on the shop floor.
What this calculator does
- Calculate the heijunka leveling pitch interval for mixed-model scheduling by dividing available time by the number of pitch increments per shift.
- Use this calculator when designing a heijunka box schedule to determine the time slot size for leveling production of multiple product variants across the shift.
- It divides available production time by the number of pitch increments per shift to give the minutes between each scheduled work release.
Formula used
- Heijunka Pitch = Available Time / Pitch Increments x Conversion
Inputs explained
- Available production time per shift:
- Number of pitch increments per shift:
- Time unit conversion factor:
How to use the result
- Use it when building or tuning a Heijunka box so each column represents an equal, manageable slice of the shift rather than an arbitrary batch.
- Pitch assumes a stable, leveled mix and a known number of increments; it does not account for unplanned downtime, so a pitch that looks healthy can still mask a process running below takt.
Current U.S. benchmarks
- U.S. manufacturing runs at 75.6% of capacity (Federal Reserve, May 2026). New factory orders are up 2.3% year over year (Census).
Common questions
- How do you calculate Heijunka pitch? Divide available production time per shift by the number of pitch increments you want, then apply any unit conversion. With 450 minutes and 30 increments, the pitch is 450 / 30 = 15 minutes per increment.
- What is the difference between takt time and pitch? Takt time is the rate of customer demand per single unit; pitch is takt multiplied by the pack-out or container quantity, giving the interval at which you release a whole pitch box slot. Pitch is the management-friendly multiple of takt used on the leveling board.
- What is a good Heijunka pitch interval? Most plants land between 10 and 30 minutes. Short enough that a problem surfaces within one increment, long enough that the material handler can complete a full circuit. A 15-minute pitch like the default is a common, workable target.
- How many pitch increments should a shift have? Enough that each increment is a digestible slice — 20 to 40 is typical for an 8-hour shift. The default 30 increments over 450 minutes yields clean 15-minute blocks that map well to a leveling board.
- Does the conversion factor change the result? Only if your inputs and desired output use different units. Left at 1, the pitch stays in minutes; set it to 1/60 to express the interval in hours, for example.
Last reviewed 2026-05-12.