Wax Melt Quantity Calculator
Size your wax melts to the room — enter the floor area and cube weight to see how many cubes to melt at once and roughly how many scent-hours they’ll give.
Match the melt to the space
Wax melts are the easy, flame-free way to scent a home — but too few cubes barely register in a big room and too many overwhelm a small one. Sizing the number of cubes to the floor area gives a steady, comfortable scent, and knowing the scent-hours tells you when to swap in fresh wax.
Prefer a diffuser or candle? Set diffuser drops with the Diffuser Drops Calculator, or estimate how long a candle lasts with the Candle Burn Time Calculator.
Frequently Asked Questions
How many wax melts should I use at once?
One cube of around 5 grams scents a small-to-medium room well, so a larger or open-plan space needs two or three melting together. This calculator suggests a cube count from the room size — roughly one cube per twelve square metres — so you get an even scent instead of a faint one in a big room or an overwhelming one in a small one.
How long does a wax melt last?
A typical fragranced melt gives roughly one and a half scent-hours per gram, so a 5 g cube throws scent for about eight hours before it needs replacing. The wax itself doesn't disappear — it stops smelling once the fragrance is spent, at which point you let it cool and swap in fresh cubes.
Do more cubes make the scent last longer?
No — they make it stronger, not longer. Cubes in the same warmer melt at the same time, so adding cubes raises the intensity for a bigger room rather than extending the hours. To keep a room scented longer, replace the spent wax with fresh cubes when the throw fades.
Are wax melts better than candles?
They're a flame-free alternative. A warmer melts the wax gently with a bulb or a tea light, so there's no wick, no soot, and easy scent-swapping — handy where an open flame isn't ideal. Candles give light and a stronger, faster throw. Many people keep both and use melts for steady background scent.
Estimates only — real coverage and duration vary with warmer power, fragrance strength, and airflow. Never leave a lit tea-light warmer unattended and follow the maker’s safety guidance.