UseCalcPro
Home
Math
Percentages, fractions, ratios
Finance
Loans, mortgages, investments
Health
BMI, calories, fitness metrics
Construction
Materials for building projects
Auto
Car payments, fuel, insurance
Pets
Pet age, feeding, housing
Garden
Lawn care, irrigation, compost
Crafts
Yarn, fabric, candle making
Food & Brewing
Bread, dough, brewing, recipes
Tools
Age, date, GPA, converters
Blog
  1. Home
  2. Crafts

Essential Oil Dilution Calculator — Ratios

%
Custom Size
Conversion: 1 oz = 30ml, 1 tsp = 5ml, 1 ml ≈ 20 drops

Your Essential Oil Blend Recipe

Essential Oil
12.0
drops
Essential Oil
0.60
ml
Carrier Oil
30.0
ml
Dilution Ratio
2%
concentration
Total blend volume: 30.60 ml

Dilution Strength

2% dilution20%
Mild (0-1%)
Moderate (1-3%)
Strong (3-5%)
Very Strong (5%+)

Dilution Guide Reference

Use CaseRecommended %Notes
Facial Care0.5-1%Most gentle, for face and sensitive skin
Daily Body Care1-2%Safe for regular use on body
Massage2-3%Therapeutic massage blends
Muscle Relief3-5%Targeted application for pain
Household Cleaning5-10%Not for skin application
Children (2-6 years)0.5-1%Extra caution required

Safety Tips for Essential Oil Use

  • 1.Always perform a patch test before using a new essential oil blend
  • 2.Pregnant women should consult healthcare provider before using essential oils
  • 3.Use extra caution with children - lower dilutions and avoid certain oils
  • 4.Citrus oils are photosensitive - avoid sun exposure for 12-24 hours after application
  • 5.Never apply undiluted essential oils directly to skin (except lavender and tea tree in emergencies)
  • 6.Store blends in dark glass bottles away from heat and light to preserve potency

Example Calculations

1Relaxing Massage Oil (30ml, 2% Lavender)

Inputs

Carrier oil amount30 ml
Dilution percentage2%
Bottle size30ml (standard 1 oz bottle)

Result

Essential Oil Drops12 drops

Calculate essential oil drops: 30 ml x 2% / 100 x 20 = 12 drops. Essential oil volume: 12 drops / 20 = 0.6 ml. Carrier oil needed: 30 ml - 0.6 ml = 29.4 ml (approximately 30 ml). Recipe: Add 12 drops lavender essential oil to 30ml sweet almond or jojoba carrier oil. Result: Safe 2% therapeutic massage blend perfect for relaxation and stress relief.

2Anti-Aging Facial Serum (15ml, 1% Frankincense)

Inputs

Carrier oil amount15 ml
Dilution percentage1%
Bottle size15ml roller bottle

Result

Essential Oil Drops3 drops

Calculate essential oil drops: 15 ml x 1% / 100 x 20 = 3 drops. Essential oil volume: 3 drops / 20 = 0.15 ml. Carrier oil needed: 15 ml - 0.15 ml = 14.85 ml (approximately 15 ml). Recipe: Add 3 drops frankincense to 15ml argan or rosehip seed carrier oil. Result: Gentle 1% facial serum safe for daily use on mature or sensitive skin.

3Muscle Relief Blend (100ml, 3% Peppermint)

Inputs

Carrier oil amount100 ml
Dilution percentage3%
Bottle size100ml glass bottle

Result

Essential Oil Drops60 drops

Calculate essential oil drops: 100 ml x 3% / 100 x 20 = 60 drops. Essential oil volume: 60 drops / 20 = 3 ml. Carrier oil needed: 100 ml - 3 ml = 97 ml. Recipe: Add 60 drops peppermint essential oil to 97ml carrier oil blend. Result: Strong 3% therapeutic blend for targeted muscle pain and sports recovery.

Frequently Asked Questions

Q

What is the safe dilution percentage for essential oils on skin?

Safe dilution percentages vary by use: 0.5-1% for facial and sensitive skin, 1-2% for daily body care, 2-3% for massage, and 3-5% for targeted therapeutic applications like muscle relief. Children and pregnant women should use lower dilutions (0.5-1%) and consult healthcare providers.

Q

How many drops of essential oil per ml of carrier oil?

For a 2% dilution (common for massage), use approximately 0.4 drops per ml of carrier oil, or 12 drops per 30ml (1 oz) bottle. The formula is: drops = (carrier oil ml x dilution %) / 100 x 20, since 1 ml equals approximately 20 drops.

Q

What are the best carrier oils for essential oil dilution?

Popular carrier oils include sweet almond oil (light, good for all skin types), jojoba oil (similar to skin's natural oils), fractionated coconut oil (long shelf life, non-greasy), grapeseed oil (light texture), and argan oil (facial care). Choose based on skin type and intended use.

Q

Can I use essential oils undiluted on my skin?

Generally no. Most essential oils must be diluted in carrier oils before skin application to prevent irritation, sensitization, or burns. Exceptions include lavender and tea tree oil for spot treatment in emergencies, but dilution is still recommended for regular use.

Q

How do I calculate drops for different bottle sizes?

Use the formula: drops = (bottle size ml x dilution %) / 100 x 20. For example, a 30ml bottle at 2% dilution needs 12 drops (30 x 2 / 100 x 20 = 12). Common sizes: 5ml needs 2 drops (2%), 10ml needs 4 drops (2%), 15ml needs 6 drops (2%).

Q

What dilution should I use for children and babies?

Use extra caution with children. For ages 2-6, use 0.5-1% dilution. For ages 6-12, use 1-2% dilution. Avoid essential oils for babies under 3 months. Always use child-safe oils (avoid eucalyptus, peppermint, and wintergreen for young children) and consult a pediatrician first.

See Also

  • Water Intake Calculator
  • Body Mass Index Calculator
  • Soap Making Calculator
  • Recipe Converter

Related Calculators

Soap Making Calculator

Calculate lye and oil ratios for handmade soap

Recipe Converter

Scale ingredient quantities for different batch sizes

Unit Converter

Convert between volume, weight, and measurement units

Percentage Calculator

Calculate percentages and ratios for various applications

Explore More Crafts Calculators

More craft calculators for aromatherapy and DIY projects

View All

Last Updated: Feb 13, 2026

This calculator is provided for informational and educational purposes only. Results are estimates and should not be considered professional financial, medical, legal, or other advice. Always consult a qualified professional before making important decisions. UseCalcPro is not responsible for any actions taken based on calculator results.

UseCalcPro
FinanceHealthMath

© 2026 UseCalcPro