Roundup Pro Concentrate Mix Ratio Calculator
Work out exactly how much Roundup Pro Concentrate to add to your sprayer based on your target weed type and tank size, using the manufacturer’s labeled mix rates.
Target Weed & Sprayer Details
Choose what you’re treating and enter your sprayer’s tank size
Roundup Pro Concentrate’s label rate ranges from 1 to 10.5 oz per gallon depending on the weed.
Total capacity of your backpack, pump-up, or tank sprayer, filled with water.
How many full tanks you expect to mix and spray in this session.
Your Roundup Pro Mix Ratio
Exact product and water amounts for your sprayer
Choose your target weed type and sprayer details above, then click Calculate Mix Ratio to see exactly how much Roundup Pro Concentrate to use.
Roundup Pro Mixing Ratios at a Glance
These figures reflect the standard Roundup Pro Concentrate label. Always confirm against the label on your own container before mixing.
| Target Weed / Use | Mix Ratio | Context / Details |
|---|---|---|
| General Weed Control (Annual) | 1.5 oz / gal | Treats roughly 300 sq ft per gallon |
| Perennial & Hard-to-Kill Weeds | 2.5 oz / gal | Bindweed, thistle, Johnsongrass |
| Woody Brush & Tough Perennials | 5 oz / gal | Apply to actively growing foliage |
| Broadcast — Annual Weeds | 0.8–1.6 qt / acre | Ground application, tank sprayer |
| Broadcast — Woody Brush | 4–8 qt / acre | Higher rate for dense brush |
| Rainfast Time | ~30–60 min | Avoid irrigation before this passes |
Roundup Pro Mix Ratio FAQ
Everything you need to know about diluting, mixing, and applying Roundup Pro Concentrate correctly.
Roundup Pro Concentrate is mixed at 1 to 10.5 fluid ounces per gallon of water depending on the target weed. General weed control on annual weeds and grasses uses about 1.5 oz per gallon, perennial and hard-to-kill weeds use around 2.5 oz per gallon, and woody brush or tough perennials use up to 5 oz per gallon.
For general weed control at 1.5 oz per gallon, a 4-gallon sprayer needs 6 fluid ounces of Roundup Pro Concentrate. For tougher perennial weeds at 2.5 oz per gallon, that same sprayer needs 10 fluid ounces, and for woody brush at 5 oz per gallon, it needs 20 fluid ounces.
No. Roundup Pro Concentrate already contains a built-in surfactant, so it doesn’t require an additional wetting agent for most applications. Adding a non-ionic surfactant during hot, dry summer months can still help reduce evaporation before the herbicide is absorbed.
Roundup Pro Concentrate is rainfast within about 30 to 60 minutes. Visible symptoms such as wilting and yellowing typically appear on annual weeds within 2 to 4 days, while perennial weeds may take 7 days or more to show full results.
No. Roundup Pro Concentrate is a professional-strength formula with around 50.2% glyphosate, compared to the lower concentrations found in most consumer Roundup products. A smaller amount of Roundup Pro Concentrate is needed per gallon of water to reach the same spray strength.