Read the baseline
Enter the normal-load dose from the label. If the package only advertises a number of loads, divide its total amount by that count and use a medium-confidence estimate.
Label-aware laundry calculatorFree · private · no signup
Use the right amount.
Not the whole cap.
Start with your detergent’s own label, then account for load size, soil and water hardness. Get a practical range you can actually measure.
01Your label is the baseline
02Your inputs stay on your device
03Every adjustment is shown
your label↘
01 — CalculatorOne load.
One load.
One sensible starting point.
Detergent strength varies. That is why this tool asks what your package says before it asks about the wash.
Before you begin
Find the normal-load amount or the package size and advertised load count. Your washer manual and detergent label always take priority.
Free calculator
Build your label-aware dose
01
Your detergentStart with what your package actually says.
02
This washThree factors detergent makers say matter.
03Add cost and cap detailsOptional+
Label firstNo universal 35 mL assumption
Range, not certaintyClear confidence and limitations
Useful at the washermL, spoons, ounces and cap fraction
02 — Method
Your bottle knows more than a generic chart.
Concentration differs across liquids, powders, pods and sheets. We preserve the package as the anchor and make each adjustment visible.
Describe this wash
Load size, soil and water hardness are the three adjustment factors manufacturers consistently identify. Washer type adds a compatibility check, not a hidden magic multiplier.
Measure a range
The result is rounded into units you can use and shown as a narrow starting range. Unit-dose products stay whole—never cut or open a detergent pod.
Our transparent modellabel dose×load factor×soil factor×water factor
The range is an educational estimate, not chemical testing or a substitute for package directions. If the output conflicts with your detergent label or washer manual, follow the manufacturer.
03 — Worked examplesSame detergent.
Same detergent.
Very different loads.
These examples begin with an illustrative label dose of 30 mL for a normal medium load. They do not represent every product.
Small · light soil · soft water0.75 × 0.85 × 0.90
15.5–18.9 mLA smaller, lightly soiled load in soft water starts below the label’s medium-load reference.
Medium · normal soil · medium water1.00 × 1.00 × 1.00
27–33 mLThe wash matches the example baseline, so the label remains the center of the range.
Large · heavy soil · hard water1.25 × 1.20 × 1.15
46.6–56.9 mLMore fabric, more soil and harder water all push the starting estimate upward.
04 — Measure it
A cap line is not a universal unit.
Caps and scoops vary by product. Measure yours once with water and a kitchen measure, then save its capacity in the calculator.
1 U.S. teaspoon4.93 mL
1 U.S. tablespoon14.79 mL
1 U.S. fluid ounce29.57 mL
PowderUse weight or the package scoop; density varies.
05 — Water hardness
Don’t know your water?
Select “I don’t know” and the calculator will avoid a hardness adjustment. For a better answer, check your utility’s annual water-quality report or use a simple hardness strip.
- Soft waterOften needs less detergent to reach the same cleaning action.
- Hard waterManufacturers commonly advise more detergent because minerals interfere with cleaning.
06 — FAQ
Questions that show up beside the washer.
01Why not just recommend two tablespoons?+
Two tablespoons can be a useful rule of thumb for some products and machines, but detergent concentration varies. This tool uses your own package as the baseline instead of presenting one amount as universal.
02Does an HE washer always mean less detergent?+
HE machines use less water and require HE-compatible detergent. But the correct amount still depends on the product. Use its label and never treat the dispenser’s MAX line as a dose recommendation.
03Can I cut a pod in half?+
No. Do not cut, open or puncture laundry detergent pods. Use whole units according to the package directions and keep them away from children and pets.
04What if I see residue or too many suds?+
Pause and consult the detergent label and washer manual. Residue can involve dosage, overloading, water temperature, detergent type or maintenance. The calculator cannot diagnose a washer problem.
05Is my information uploaded?+
No calculator inputs are sent to a custom server. If you save a profile, it stays in this browser. A shared link includes the non-price setup values you choose to share.
06Is this result guaranteed?+
No. It is a transparent educational estimate. Product formulation, machine behavior and local water differ. Manufacturer directions always control.
07 — Sources
Built from manufacturer guidance, not laundry folklore.
Last reviewed July 20, 2026. Sources are provided so you can inspect the reasoning and follow the most specific guidance for your product.