Modulus Detailing Tools

Stop Guessing The Mix.

Calculators for dilution, PIR, foam cannon mixes, cost per use, ready-to-use yield, shampoo dosing, sprayer coverage and IPA panel wipe strength.

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08 Calculators

0 Guesswork

GBP Cost Control

MD Built By Modulus Digital

01Choose Product 02Calculate Mix 03Follow Method 04Ask The Lab

Tool Finder

Pick the job you are working on.

Each tool is built for a real detailing decision: how strong, how much, how many uses, and what it costs before the product touches the car.

Mix Dilution Chemical and water amounts for any bottle size. Foam PIR Estimate the strength that reaches the panel. Cannon Foam Mix Bottle mixes before the pressure washer dilutes again. Value Cost Per Use See what a wash or application really costs. Yield RTU Yield How much ready-to-use product a concentrate makes. Bucket Shampoo Dose Dose shampoo by bucket size and ml per litre. Spray Sprayer Uses Estimate trigger pulls, ml per panel and total coverage. Prep IPA Mix Mix panel wipe to a target percentage.

Tool 01 / Bottle Mix

Dilution Calculator

Work out the chemical and water needed for ratios like 1:4, 1:10, 1:20 or 1:100.

Total bottle size in ml Dilution ratio

Enter your bottle size and dilution ratio.

How to read 1:10

One part product to ten parts water gives eleven total parts. In a 1 litre bottle that is about 91ml chemical and 909ml water.

Tool 02 / Panel Strength

PIR Calculator

Estimate panel impact ratio for snow foam, pre-wash and foam cannon use.

Product in foam cannon in ml Foam cannon bottle size in ml Total output onto vehicle in ml

Enter your foam cannon values.

Why PIR matters

The mix in your cannon is diluted again by the pressure washer. PIR estimates the final strength landing on the vehicle.

Tool 03 / Cannon Bottle

Foam Cannon Mix

Calculate product and water amounts before filling your foam cannon bottle.

Foam cannon bottle size in ml Desired bottle mix ratio

Enter your foam cannon bottle size.

Bottle mix is not PIR

This gives the bottle mix only. Use the PIR calculator if you want the estimated strength on the panel.

Tool 04 / Value

Cost Per Use

Calculate real cost per wash and approximate uses from a bottle.

Bottle price in GBP Bottle size in ml Product used per wash in ml

Enter product price, size and usage.

Price is not value

A concentrated product can cost more upfront and still be cheaper per wash when used correctly.

Tool 05 / Concentrate Yield

RTU Yield Calculator

See how much ready-to-use product a concentrate makes at a chosen dilution.

Concentrate bottle size in ml Dilution ratio Refill bottle size in ml

Enter concentrate size and ratio.

Useful for concentrates

This shows the total mixed volume and how many refill bottles a concentrate can make.

Tool 06 / Bucket Wash

Shampoo Dose

Calculate how much shampoo to add to a wash bucket from ml per litre guidance.

Bucket water in litres Dose in ml per litre Bottle price in GBP, optional Bottle size in ml, optional

Enter bucket size and dose rate.

Good for wash buckets

This is for shampoo-style products where the guidance is normally given as ml per litre of water.

Tool 07 / Coverage

Sprayer Uses

Estimate how much product you use per panel and how many panels a bottle covers.

Bottle size in ml Average ml per trigger pull Trigger pulls per panel

Enter sprayer and panel values.

Dial in usage

Great for quick detailers, interior cleaners, glass cleaners and spray-applied products.

Tool 08 / Panel Prep

IPA / Panel Wipe

Calculate IPA and water amounts for a target panel wipe percentage.

Total mix size in ml Starting IPA strength in % Target strength in %

Enter IPA strength and target percentage.

Stronger is not always better

Match the strength to the surface and job. The goal is clean prep without unnecessary risk.

Practical tools, built by the same team shaping the brand.

Modulus Digital exists to turn useful ideas into clean websites, tools, content systems and brand experiences. The calculators on this page are part of that approach: practical, measurable and built around the customer journey.

Calculator FAQ

Common detailing calculator questions

What is the difference between dilution ratio and PIR?

Dilution ratio describes how a product is mixed in a bottle or sprayer. PIR estimates the final product strength that reaches the vehicle after equipment dilution, especially through a foam cannon.

Which tool should I use for snow foam?

Use Foam Cannon Mix to fill the bottle, then PIR Calculator to estimate the final strength on the panel.

How do I compare product value?

Use Cost Per Use for a single application and RTU Yield to see how much usable product a concentrate makes at a chosen dilution.

Can I use these calculators for non-Modulus products?

Yes. They work for general detailing maths, but always follow the product label and test sensitive surfaces carefully.