Oil Dilution Calc: Dilutoria

Essential oil dilution calculator: enter your carrier oil amount and the dilution % you want, and Dilutoria shows the number of whole drops (or grams), plus the real % after rounding to whole drops. A 10 mL roller bottle at 2% is 4 drops at 20 drops per mL. Any bottle, any %, your own dropper.

For aromatherapy practitioners and anyone who makes blends for clients, Dilutoria Pro keeps a record for each client and turns a blend into a PDF blend record with your business name and logo, plus printable bottle labels.

DILUTE
• Target % to drops, mL or grams for any carrier oil amount, with the actual % after rounding.
• Check a mix you already made: enter the drops and the carrier oil to see the real %, whether it is above the usual guideline, and how to bring it back (reduce to a set number of drops, or add carrier oil).
• Guideline caps follow the use (face, body, bath, sensitive skin) and who it is for (adult, senior, pregnancy, children by age, baby).
• Per-oil guideline maximums for phototoxic expressed citrus oils (bergamot, lime, lemon, grapefruit) and skin-sensitizing oils.

RECIPES AND BLENDS
• Roller bottle, spray and diffuser: pick a bottle size and get the drops.
• Blend ratio to whole drops: set the parts for each oil and the total drops, and get whole-drop amounts that keep your ratio.
• Save as many recipes as you like and share them as text.

MEASURE YOUR WAY
• Set drops per mL (15 to 30) to match your dropper.
• Weigh instead of counting: weight mode works in % by weight (w/w), the way published limits are written, so very low limits such as 0.07% become measurable on a scale.
• mL, oz and g units.
• The calculator works offline. No account, no sign-up.

DILUTORIA PRO (one-time purchase)
• Client records: keep who each blend was for and when. Pick a client and their "who is it for" guideline fills in for you.
• Blend record PDF: your business name, logo, practitioner name and contact at the top; client name, date, and drops, mL and % for each oil, with the points to check.
• Bottle label PDF on A4 (21 labels) or Letter (30 labels) sheets.
• Back up to a file and restore, for example on a new phone.
• No ads.
Everything in the free version stays free, with no usage limits.

MADE FOR
Aromatherapy practitioners, massage and spa professionals, and anyone making a roller bottle, room spray or diffuser blend at home.

FAQ
How many drops of essential oil go in a 10 mL roller bottle?
At 2% and 20 drops per mL, 4 drops.

How do I convert essential oil drops to mL?
Dilutoria uses 20 drops per mL by default. Thin oils such as citrus run closer to 25, thick oils such as sandalwood closer to 15, so you can set your own number in Settings.

What dilution should I use for children or during pregnancy?
Choose who the blend is for and Dilutoria uses the guideline cap for that group, lower for ages 2–6, the face, seniors and pregnancy. For pregnancy and ages up to 2 it also suggests asking a qualified professional; under 3 months it advises avoiding skin use.

Can I keep client records and print a blend sheet?
Yes. Dilutoria Pro adds client records, blend record PDFs and bottle labels.

SOURCES
Reference figures are compiled from published aromatherapy safety literature (R. Tisserand & R. Young, "Essential Oil Safety", 2nd ed.) and public NAHA / IFRA guidance. Dilutoria is independent and not affiliated with or endorsed by those authors or organisations.

LIMITATIONS
• Dilutoria is a calculator and reference tool. Dilution figures are general guidelines, not a guarantee of safety, and do not replace advice from a qualified professional. Patch-test before use.
• Drop size varies by dropper and oil. For the most exact numbers, use weight mode.
• Per-oil caps cover the oils in the built-in list. Other oils can still be calculated by %, without a per-oil cap.
• Client records and PDFs stay on your device. Use backup to move them to another device.
• Pro is purchased in the Android app through Google Play.