Boom Sprayer Calibration Calculator
Calculate a boom/tractor sprayer's application rate from nozzle output, speed and nozzle spacing.
For a boom sprayer, application rate (L/ha) = 600 × nozzle output (L/min) ÷ (speed km/h × nozzle spacing m). Check each nozzle's output (catch and time it) and keep a steady speed — worn nozzles over-apply. Re-calibrate every season.
Always follow the product label — the label is the law. Verify doses, PHI and compatibility with the manufacturer and local regulations before spraying.
Spray operators and farmers use the free Boom Sprayer Calibration Calculator for an accurate answer in seconds — no formulas to remember, works offline in the field.
About Boom Sprayer Calibration Calculator
A tractor boom sprayer's application rate is set by three things: how fast each nozzle flows, how fast you drive, and how far apart the nozzles are. This tool combines them into litres per hectare (and per acre) so you can match the label dose. Catch and time the output of each nozzle first — worn nozzles flow faster and silently over-apply — and hold a steady, known speed. Re-calibrate at the start of every spraying season.
How to use Boom Sprayer Calibration Calculator
- 1Enter your sprayer/field values into the inputs.
- 2Read the headline result and the supporting breakdown.
- 3Apply the guidance in the note to your spraying.
Why use Boom Sprayer Calibration Calculator?
- ✓Uses the standard, citable spray-calibration formula
- ✓Clear inputs with sensible defaults
- ✓Instant result with the working shown
- ✓Free, fully in-browser and private
Frequently asked questions
How do I calibrate a tractor boom sprayer?+
Measure each nozzle's output in litres per minute (catch it for a timed period), your forward speed in km/h and the nozzle spacing in metres. Application rate (L/ha) = 600 × flow ÷ (speed × spacing).
Why check every nozzle individually?+
Nozzles wear and clog unevenly, changing their output. A nozzle flowing 10% over delivers 10% too much chemical along its strip. Replace nozzles that deviate more than ~10% from the rated output to keep application even and accurate.
Is this tool free and private?+
Yes — free, no sign-up, and all calculation runs in your browser, so it works offline in the field and your data never leaves the device.
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