Quick interactive tools to help you make better candle decisions. Estimate how long a candle will last, compare burn time on a warmer, calculate cost per hour — all without spreadsheets.
Burn Time & Cost Calculator
Estimate how long your candle will last burning traditionally or on a warmer. Get cost per hour, cost per session, and annual cost based on your wax type, candle size, and usage habits.
Use the calculator →Scent Picker by Room
Match candle scents to specific rooms — bedroom, kitchen, bathroom, living room. Coming soon.
Coming soonRoom Size to Candle Size
How big a candle do you actually need for your space? Get a recommendation based on square footage. Coming soon.
Coming soonHow we test our calculators
Every calculator on CandleGlow uses real-world data from candles we've burned and timed. The burn-time calculator's wax-specific rates come from comparing manufacturer claims against our own session logs across more than 40 candles tested over the past two years.
Where formulas are estimates, we explain the assumptions transparently. Burn time depends on wick trim, draft, ambient temperature, and session length — the calculator gives you the median expected range, not a guarantee.